Protecting People and the EnvironmentUNITED STATES NUCLEAR REGULATORY COMMISSION
ACCESSION #: 9704240050
NOTE: This text document was processed from a scanned
version or an electronic submittal and has been
processed as received. Some tables, figures,
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Information & Support Services
P.O. Box 3707
Seattle, WA 98124-2207
April 16,1997
G-1151-SJA-97-172
Document Control Desk
United States Nuclear Regulatory Commission
Washington, D.C. 20555
Reference: a) Boeing Letter G-1151-RSO-92-365 dated August 31,
1992; R. S. Orr to the NRC Operations Center
b) NRC Letter Docket No. 99901227 dated August 12,
1992; L. J. Norrholm to R. S. Orr; Subject: Response
to 10 CFR 21 Inquiry
Dear Sir or Madam:
In accordance with the reference correspondence and 10 CFR 21, Boeing is
sending the NRC the attached error notice(s) received from our former
software suppliers. Because of unknown current addresses, the following
former customers were not notified:
Reactor Controls, Inc.
Echo Energy Consultants, Inc.
Nuclear Applications and Systems Analysis Company (Japan)
Nuclear Power Services
Error notices have been sent to our other former customers.
Very truly yours,
Sandra J. Andrews
Nuclear Administrator
Phone: (206) 865-6248
FAX: (206) 865-4851
Mail Stop: 7A-33, or
e-mail: Sandra.Andrews@PSS.Boeing.com
Enclosure(s): ANSYS Class3 Error Reports 97-01 through 97-15, and 96-
45R1
ANSYS QA Notice QA97-01
ANSYS Support Coordinator Bulletin SCB97-01
ANSYS Class3 Error Summary Reports for Releases 5.2 and
5.3, sorted by error number and keyword
ANSYS, Inc.
Southpointe
275 Technology Drive APR 16 1997
Canonsburg, PA 15317
April 14, 1997
Dear Class3 Error Recipient:
Enclosed you will find ANSYS Class3 Error Reports 97-01 through 97-
15, 96-45 R1 and ANSYS QA Notice QA97-01. Also included is ANSYS Support
Coordinator Bulletin SCB97-01. These reports were issued in the first
quarter of 1997.
Class3 Error Report 96-45 has been revised to provide more specific
information on load application.
ANSYS QA Notice QA97-01 has been issued to alert users of the
limitations of the ASUM and VSUM commands. SCB97-01 has been issued to
provide compatibility information of ANSYS 5.3 with Windows NT 4.0.
Recently, ANSYS, Inc. headquarters moved to a new location. Our
main telephone number 412-746-3304 has remained the same. However, all
direct dial numbers have changed. The new fax number for the Quality
Assurance Group is 412-514-1991.
ANSYS, Inc. William Bryan - QA Manager 412-514-2883
Southpointe Ken Podlaszewski - Assoc. QA. Eng. 412-514-2930
275 Technology Drive Bonny Podolek - Admin. Asst. 412-514-2858
Canonsburg, PA 15317 USA
I would like to remind you of the various ways that ANSYS Inc.
provides Class3 error information. Quarterly, Class3 errors are
delivered by mail to the ANSYS Support Coordinator listed on-your ANSYS
license agreement. Please complete and return the attached change form
if there has been a change in personnel or an address change so that
these reports can be delivered promptly.
For users desiring access to Class3 errors on a more timely basis
you can be added to our email distribution list. To register for email
notification of reports, simply send an email request including your
email address, company name/address and ANSYS agreement number to
bonny.podolek@ansys.com. If you are a subscriber to email distribution,
please keep us informed of any changes in your email address by emailing
bonny.podolek@ansys.com.
Finally, Class3 Errors and QA Notices are posted on ANSYS's Internet
HomePage. The address is http://www.ansys.com. They are located in the
ANSYS Zones section of the HomePage under Customer. The username to
enter this area is "customer" and the password is "ain1fm" (the acronym
for ANSYS is number 1 for me).
For your convenience, also enclosed with this mailing you will find
Releases 5.2 and 5.3 ANSYS Class3 Error Summary Reports sorted both by
error number and keyword.
Sincerely,
ANSYS, Inc.
William J. Bryan
Quality Assurance Manager
ISO 9001 CERTIFICATION INCLUDES
ALL COMMERCIAL PRODUCTS
ANSYS Revision Identifier Description
ANSYS revision identifiers consist of a major revision level, a
minor revision level, a correction level, and occasionally a special
version level. An example of how this is constructed is shown below:
Figure omitted
Major revision level changes indicate that new features have been
added to the program and that some level of program architecture change
and/or file structure has occurred. Minor revision level changes also
indicate that new features have been added to the program, but files are
upwardly compatible. All known error fixes are included in both minor
and major revisions. Changes to the correction level indicate that it is
primarily an error correction release. Special version identifiers
indicate that one or more additional minor changes have been made to the
program, normally to circumvent an error. Special versions are not
general releases to all ANSYS licensees, since they typically represent
errors occurring only on one system, a subset of our customers who have
specific graphics devices, etc.
The ANSYS revision identifier(s) shown under "corrected in" on the
front side of this Class3 Error Report indicates the first possible
revision that could contain the correction. A major program change
needed to fix an error can dictate that the next minor or major revision
will contain the fix rather than the next correction level. For example,
when errors were being reported while Rev. 4.3A was the latest production
version, most Class3 error reports indicated that 4.3B was the "corrected
in" revision. Others requiring significant code restructuring were
reported as fixed in 4.4. Rev. 4.3B was never released, but Rev. 4.4
contained all error corrections noted as fixed in 4.3B.
An identifier indicated under "corrected in" does not guarantee that
a general release of that revision of ANSYS will occur. It does indicate
that the correction is known and implemented in the coding that would be
part of that general release.
Equivalent Product Identifiers
The ANSYS family of component products occasionally undergoes name
changes between revisions and/or changes in the functionality of derived
products (such as ANSYS-PC/LINEAR). To minimize the potential for
confusion in these areas, the important product name equivalences
(similar program functionality and error content) are listed below.
ANSYS/ED contains all errors shown for the full ANSYS product,
starting at Rev. 5.0. and
beyond, unless otherwise
noted.
PREPPOST contains relevant errors the full ANSYS product, for
shown for included pre- and
postprocessing functionality
ANSYS Component Products is an All component products that
inclusive term for were issued at the stated
revision level(s)
PC/LINEAR is equivalent to WS/LINEAR at Rev. 4.4A,
and ANSYS/LinearPlus starting at
Rev. 5.0A.
PC/THERMAL is equivalent to WS/THERMAL at Rev. 4.4A,
and ANSYS/THERMAL starting at
Rev. 5.0A.
PC/MAGNETIC is equivalent to ANSYS/Emag starting at Rev.
5.0A
ANSYS@ CLASS3 ERROR REPORT
ERROR NO: 97-01
KEYWORDS: SOLID MODEL BCs ROTATED NODES DA
DESCRIPTION OF ERROR:
The transfer (SBCTRAN, DTRAN or SOLVE) of area symmetry or anti-
symmetry (D commands with Label SYMM or ASYM) solid model boundary
conditions to the finite element model. may not be correct for nodes
that have been rotated.
TYPICAL GUI PATH(S):
Main Menu>Preprocessor>Loads>Apply>On Areas
Main Menu>Preprocessor>Loads>Apply>Displacement>On Areas
Main Menu>Solution>Apply>On Areas
Main Menu>Solution>Apply>Displacement>On Areas
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.1 Release 5.4
Component Products Rev. 5.1 Component Products Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Make sure that all nodes to which DA boundary conditions will be
transferred are not rotated. This may be done by selecting the
appropriate area (ASEL,S ...), selecting all the nodes associated with
the area (NSLA,S,1), then un-selecting all nodes with rotation angles of
0.0 (NSEL, U, ANG, XY, 0.0: NSEL, U, ANG, YZ, 0.0; NSEL, U, ANG, ZX, 0.0)
and ensuring that no nodes are left in the selected set. (NLIST should
show no THXY, THYZ or THXZ values.)
COMMENTS:
Nodes may be rotated by various means such as the NROT, DSYMM,
NMODIF commands.
AUTHOR/CORRECTOR: DATE: January 22, 1997
Wa Kwok
REVIEWED BY QA: DATE: January 22, 1997
William J. Bryan
APPROVAL: DATE: January 22, 1997
John A. Swanson
*_/ If a product name is not ed in the "first incorrect version", the
full ANSYS program is implied. For products not listed, this error does
not apply, but see the reverse side for equivalent product designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered copy] CLASS3 ERROR REPORT
ERROR NO: 97-02
KEYWORDS: MAGNETICS SENERGY MACRO
DESCRIPTION OF ERROR:
Stored magnetic energy calculated with the SENERGY command macro
will be incorrect for the following cases:
1. Permanent magnet elements with an assigned element coordinate
system (ESYS command) that is other than the global Cartesian
system.
or 2. Three dimensional problems using the Magnetic Scalar Potential
formulation (element types SOLID96, SOLID5, SOLID98) with
current sources (element type SOURC36 or currents from coupled-
field element types SOLID5, LINK68, SOLID69 or SOLID98).
Energy from the current source (Hs field) is neglected.
TYPICAL GUI PATH(S):
SENERGY: Main Menu>General PostProc>Elec & Mag Calc
ESYS: Main Menu>Preprocessor>Attributes>Default Attribs
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.2 Release 5.4
ANSYS/EMAG Rev. 5.2 ANSYS/EMAG Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
For Item 1: Define permanent magnet elements with the default global
Cartesian element coordinate system. Revise the coercive force
components (MP command, MGXX, MGYY, MGZZ material properties) to align
with the global Cartesian coordinate system.
MP: Main Menu>Preprocessor>Material Props>Isotropic
COMMENTS:
Incorrect energy is calculated in domains with constant permeability
(MP command, MURXX material property). Energy in nonlinear regions
(defined by a BH curve) is correct.
The integration limits for permanent magnet energy will be changed.
(See Theoretical Manual, equation 19.6-18.) The zero energy level is
presently defined at a value of B=0. This will be changed in the
corrected version to a zero energy level defined at B=Br, where Br is the
residual induction of the permanent magnet. The new integration limit
level is more in line with industry standards. In addition, absolute
signs on the energy and co-energy calculations will be removed (see
equations 19.6-18, 19.6-19).
AUTHOR/CORRECTOR: DATE: November 22, 1997
Dale Ostergaard
REVIEWED BY QA: DATE: November 22, 1997
William J. Bryan
APPROVAL: DATE: November 22, 1997
John A. Swanson
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-03
KEYWORDS: LSDYNA EDLOAD RIGID BODY
DESCRIPTION OF ERROR:
When defining rigid body loads (RBUX, RBUY, RBFX, etc. on EDLOAD),
the last load defined for each load label overwrites all previously-
defined loads for a particular load label. In addition, the load curve
associated with that load is not necessarily the load curve defined with
that load. The jobname.k file contains only the last load defined for
each load label, and a load curve which may not be associated with the
load listed.
For example, assume the following input for two previously-defined
materials and the parameters time, time1, load, and load1:
EDLOAD,ADD,RBUY,,1,time(1),load(1)
EDLOAD,ADD,RBUY,,2,time1(1),load1(1)
Only the second load defined [load1(i)] will be used in Solution or
written to the jobname.k file. In addition, only one load curve will be
listed.
TYPICAL GUI PATH(S):
Main Menu>Solution>Loading Options>Specify Loads
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
ANSYS/LS-DYNA Release 5.3 ANSYS/LS-DYNA Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
AUTHOR/CORRECTOR: DATE: January 22, 1997
Lynne Metzgar
REVIEWED BY QA: DATE: January 22, 1997
William J. Bryan
APPROVAL: DATE: January 22, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS program is implied. For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-04
KEYWORDS: HARMONIC RESPONSE ANALYSIS UNSYMETRIC MATRICES PIVOT
TERM
DESCRIPTION OF ERROR:
The results may be incorrect for an analysis that:
A. contains one or more elements that use unsymmetric matrices*_/,
and/or performs a full harmonic response analysis**_/ (ANTYPE,
HARM with HAROPT, FULL),
and B. the equation solver reports the minimum pivot in the output
file as being equal to 0 (zero).
*_/ The use of element types with unsymmetric matrices that may lead to
condition B are:
1. FLUID66 Coupled thermal-fluid pipe
2. MATRIX27 Stiffness matrix (with KEYOPT(2)=1)
3. FLUID29,30 Acoustic fluids (with KEYOPT(2)=0)
**_/ The use of element types which in a harmonic response analysis
satisfy condition B alone include all of the above, as well as multi-
field elements which are not using all of the available fields.
The exception is CIRCU124, which does not have this error.
TYPICAL GUI PATH(S):
Main Menu>Solution
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 4.3 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Impose D commands (Main Menu>Solution>Apply>(load type)>On Nodes) on
all unused degrees of freedom, so that the minimum pivot is no longer 0.
COMMENTS:
This error has been seen only on one very large analysis.
Zero pivots occur only when there are unused DOFs that are processed
by the solver.
AUTHOR/CORRECTOR: DATE: February 19, 1997
Peter Kohnke
REVIEWED BY QA: DATE: February 19, 1997
William J. Bryan
APPROVAL: DATE: February 19, 1997
John A. Swanson
*_/ If a product name is not incLuded in the "first incorrect version",
the full ANSYS program is implied. For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
incLuded in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-05
KEYWORDS: STRUCTURAL ANALYSIS PCG SOLVER IMPOSED DOF
DESCRIPTION OF ERROR:
When the PCG solver (PowerSolver) (EQSLV, PCG command) is used with
a non-zero imposed displacement (D, DK, etc., commands) as a loading, the
computed displacement solution may have a larger inaccuracy than the
user-specified tolerance (Toler field on the EQSLV command) indicates.
This only occurs when the coefficients of the stiffness matrix are
of the order of 1.0E7 and higher, a situation which can occur in a
structural analysis.
TYPICAL GUI PATH(S):
MainMenu>Preprocessor>Loads>Apply>Displacement
MainMenu>Preprocessor>Loads>Analysis Options
MainMenu>Solution>Analysis Options
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.1 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Use a tighter tolerance in the second field of the EQSLV command.
Typically this tolerance should be in the range of 1.0E-11 to 1.0E-14
when non-zero imposed displacements are applied. The corrected version
(Release 5.4) will automatically adjust the reference norm to achieve the
proper accuracy as user-specified in the EQSLV command.
COMMENTS:
AUTHOR/CORRECTOR: DATE: February 19, 1997
Yong Cheng Liu
REVIEWED BY QA: DATE: February 19, 1997
William J. Bryan
APPROVAL: DATE: February 19, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS-program is implied. For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-06
KEYWORDS: MAGNETICS HARMONIC CIRCUIT ELEM124
DESCRIPTION OF ERROR:
Results are incorrect for harmonic analyses (ANTYPE, Harmic) of
electric circuits involving inductors (CIRCU124, KEYOPT(1)=1) or mutual
inductors (CIRCU124, KEYOPT(1)=8), if more than one load step or substep
is used.
TYPICAL GUI PATH(S):
MainMenu>Solution>New Analysis>Harmonic
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.2 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
For an electric circuit having inductors or mutual inductors,
perform a harmonic analysis for ONE frequency, and then go to POST1 to
view results.
COMMENTS:
AUTHOR/CORRECTOR: DATE: February 19, 1997
Jian-She Wang
REVIEWED BY QA: DATE: February 19, 1997
William J. Bryan
APPROVAL: DATE: February 19, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS program is implied. For products-not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-07
KEYWORDS: MAGNETICS VOLTAGE LOADING PLANE53
DESCRIPTION OF ERROR:
Solutions may be incorrect when ap lying zero voltage drop (VLTG
label in BFE command) to a voltage-fed strand2 coil region modeled with
PLANE53, KEYOPT(1)=2.
TYPICAL GUI PATH(S):
MainMenu>Preprocessor>Loads>Apply>Voltage drop
MainMenu>Solution>Apply>Voltage drop
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.2 Release 5.4
ANSYS/EMAG Rev. 5.2 ANSYS/EMAG Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
1. If applied voltage needs to be set to zero, apply a very small
voltage drop (e.g., BFE, elem, VLTG, 1.0e-8).
2. If there is no applied voltage to a coil region, avoid using
KEYOPT(1)=2; use KEYOPT(1)=0 instead.
COMMENTS:
This error may be system dependent. It has only occurred on the IBM
RS6000 system version. However, it may occur on other systems.
AUTHOR/CORRECTOR: DATE: February 19, 1997
Jian-She Wang
REVIEWED BY QA: DATE: February 19, 1997
William J. Bryan
APPROVAL: DATE: February 19, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS program is implied. For products not listed, this error
does not appLy, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-08
KEYWORDS: INERTIA RELIEF DROPPED MIDSIDE NODES
DESCRIPTION OF ERROR:
The results of using inertia relief (IRLF command) are incorrect if
an element definition includes a dropped midside node followed by an
included midside node. For example, if none or all midside nodes are
dropped, there is no error.
TYPICAL GUI PATH(S):
MainMenu>Solution>Other>Inertia Relief
MainMenu>Solution>Output Ctrls>Incl Mass Summary
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.0 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
For 2-D meshes with transitions between regions not using and using
midside nodes, orient elements so that node P is always the dropped node.
COMMENTS:
AUrTHOR/CORRECTOR: DATE: February 19, 1997
Peter Kohnke
REVIEWED BY QA: DATE: February 19, 1997
William J. Bryan
APPROVAL: DATE: February 19, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS-program is implied. For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-09
KEYWORDS: RBE3 CONSTRAINT EQUATIONS
DESCRIPTION OF ERROR:
The RBE3 command produces incorrect constraint equations if the
slave nodes do not lie on a plane which is normal to the line from the
master point to the centroid of the slave nodes. The undocumented
CECHECK command may detect these incorrect constraint equations.
TYPICAL GUI PATH(S):
This feature cannot be accessed directly in the GUI menu. It must
be entered directly in the command input window.
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Release 5.3 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Use the RIGID command or stiff beams to achieve the desired force
and moment transfer.
COMMENTS:
AUTHOR/CORRECTOR: DATE: February 19, 1997
John Swanson
REVIEWED BY QA: DATE: February 19, 1997
William J. Bryan
APPROVAL: DATE: February 19, 1997
David Conover
*_/ If a product name is not incLuded in the "first incorrect version",
the full ANSYS-program is implied. For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-10
KEYWORDS: GUI PIPE17 ELEM17 REAL CONSTANTS
DESCRIPTION OF ERROR:
The real constant dialog box in the GUI for PIPE17 places some real
constant data in the wrong location. If not changed, this will cause
incorrect results.
TYPICAL GUI PATH(S):
Preprocessor>Real Constants>Add
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Release 5.3 Release 5.4
ANSYS/LinearPlus Release 5.3 ANSYS/LinearPlus Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Specify real constants for PIPE17 by typing in the command input
window using R, RMORE, or RMODIF commands. List the real constants
(RLIST) to verify that they are correct.
COMMENTS:
AUTHOR/CORRECTOR: DATE: February 19, 1997
Ron Werkmeister
REVIEWED BY QA: DATE: February 19, 1997
William J. Bryan
APPROVAL: DATE: February 19, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS-program is implied. For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-11
KEYWORDS: PLANE2 SOLID92 RAMPED BOUNDARY CONDITIONS MULTIPLE
SOLUTIONS
DESCRIPTION OF ERROR:
If the model
1. contains PLANE2 or SOLID92 element types
and 2. the loading contains non-zero pressures, accelerations, or
temperature loads
and 3. the following sequence of actions occur:
A. the user enters the solution processor (/SOLUTION
command) and performs a single or multiple load step
analysis by issuing the "SOLVE" command then exits
the solution processor by issuing the "FINISH"
command
and B. the user reenters the solution processor USOLUTION
command) again, and this load step contains more than
one substep and ramped boundary conditions are being
applied (the default)
then for the first load step of this reentry into solution processor any
applied loadings made up of non-zero pressures, accelerations, or
temperature loads will ramp from the loading values at the end of the
previous "SOLUTION" instead of ramping from zero for the above element
types.
NOTE: The applied displacements and nodal forces are ramped correctly.
TYPICAL GUI PATH:S):
Main Menu>Preprocessor>Loads>Time/Frequency>Time&Substeps
Main Menu>Solution>Time/Frequency>Time&Substeps
Main Menu>Finish
Main Menu>Solution>CurrentLS
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Release 5.3 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Save the database (SAVE command) before the first solver, issue a
/CLEAR to clear the ANSYS database, then RESUME the database and solve.
Follow the same procedure for subsequent solutions.
Alternatively, run the separate solve sequences as separate runs.
COMMENTS:
This is an unusual loading procedure, but it is acceptable.
AUTHOR/CORRECTOR: DATE: April 2, 1997
Pakal Rahulkumar
REVIEWED BY QA: DATE: April 2, 1997
William J. Bryan
APPROVAL: DATE: April 2, 1997
John A. Swanson
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-12
KEYWORDS: SUBSTRUCTURE MATRIX50 DOF MDOF TRI FILE
DESCRIPTION OF ERROR:
On 32 bit computer platforms, the generation pass of a substructure
solution with a substructure tri file greater than 8 GB produces an
incorrect substructure stiffness matrix. This will result in solution
errors in the use pass.
TYPICAL GUI PATH(S):
Main Menu>Solution>>New Analysis>Substructuring
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.2 Release 5.4.
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Split a very large substructure into smaller ones to ensure each
substructure can only generate a tri file smaller than 8 GB in size.
COMMENTS:
Typically, when active slave node DOF is greater than 170,000 or an
R.M.S. wavefront size is greater than 6000, the tri file of the
underlying substructure will exceed the 8 GB limit on 32 bit computer
platforms. The Cray 64 bit computer platform with internal files (/FTYPE
command) does not have this 8 GB limit on tri file size.
AUTHOR/CORRECTOR: DATE: April 2, 1997
Yong Cheng Liu
REVIEWED BY QA: DATE: April 2, 1997
William J. Bryan
APPROVAL: DATE: April 2, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS-program is implied. For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-13
KEYWORDS: PSD BASE EXCITATION RPSD ABSOLUTE RESPONSE PSD
DESCRIPTION OF ERROR:
For Power Spectral Density (PSD) spectrum analysis (SPOPT,PSD
command) with base excitation (PFACT command with Excit = BASE), if more
than one input PSD table is specified, then the absolute response PSD
computed in POST26 (RPSD command with DATUM = 1) will erroneously be
computed based only on the last PSD table specified.
TYPICAL GUI PATH(S):
Main Menu>TimeHist Postpro>Calc Resp PSD
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Release 5.3 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
If the base excitations are independent of each other, apply each
single base excitation one at a time, then obtain the absolute response
PSD by superimposing the results.
COMMENTS:
This error does not affect relative PSD computed in POST26 (RPSD
command with DATUM=2).
AUTHOR/CORRECTOR: DATE: April 2, 1997
Mu-Tsang Chen
REVIEWED BY QA: DATE: April 2, 1997
William J. Bryan
APPROVAL: DATE: April 2, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version".
the full ANSYS-program is implied. For products not listed. this error
does not apply. but see the reverse side for equivalent product
designations.
Unless noted otherwise. this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-14
KEYWORDS: PSD
DESCRIPTION OF ERROR:
A PSD input curve with a very steep slope (about + 300 to 1) causes
problems with the curve fitting and results in very large and incorrect
results.
TYPICAL GUI PATH(S):
Main Menu>Solution>Spectrum>PSD vs Freq.
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Release 5.3 Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
COMMENTS:
In ANSYS 5.3, the points chosen for least-square curve fit
(piecewise-linear PSDs in log-log scale need to be transformed into
polynomial PSD in regular scale) were determined by the beginning point
value of each segment and its slope. In ANSYS 5.4, the points will be
determined by the beginning and end point values of each segment,
independent of the slope.
AUTHOR/CORRECTOR: DATE: April 2, 1997
Mu-Tsang Chen
REVIEWED BY QA: DATE: April 2, 1997
William J. Bryan
APPROVAL DATE: April 2, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version".
the full ANSYS program is implied. For products not listed. this error
does not apply, but see the reverse side for equivalent product
designations.
Unless noted otherwise. this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 97-15
KEYWORDS: NSLA SELECT AREA NODES
DESCRIPTION OF ERROR:
When:
1. selecting nodes associated with areas (NSLA command),
and 2. requesting all nodes associated with the area (NKEY=1),
and 3. if any of the lines that make up the area have no interior
nodes meshed on them,
then a node not associated with the area(s) may be erroneously selected.
Note that subsequent operations on the selected set of nodes (such as
applying boundary conditions) may produce unexpected results.
TYPICAL GUI PATH(S):
Utility Menu>Select>Entities
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Rev. 5.0 Release 5.4
Component Products Rev. 5.0 Component Products Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Display and/or list nodes to verify that the correct nodes were
selected. Use node unselects to unselect any erroneously selected nodes.
COMMENTS:
AUTHOR/CORRECTOR: DATE: April 2, 1997
David Conover
REVIEWED BY QA: DATE: April 2, 1997
William J. Bryan
APPROVAL: DATE: April 2, 1997
John A. Swanson
*_/ If a product name is not included in the "first incorrect version",
the full ANSYS-program is implied. For products not listed. this error
does not apply. but see the reverse side for equivalent product
designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-line documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS[Registered Copy] CLASS3 ERROR REPORT
ERROR NO: 96-45 RI
KEYWORDS: SURFACE LOADS BODY FORCES RAMPING
DESCRIPTION OF ERROR:
Surface loads (SF family of commands) and body forces (BF family of
commands) will erroneously be ramped from zero for each load step instead
of from the previous load step values if the model contains PLANE2,
SOLID92, or any thermal element, and the loads were applied to any of
those elements as follows:
1. Surface loads were applied to the solid model using the SFL or
SFA commands.
or 2. Pressure or convection surface loads were applied to the finite
element model with the previously documented EP, EC, PSF, or
CVSF commands.
or 3. The LSWRITE/LSSOLVE commands were used to specify the load
steps having either surface loads or body forces.
TYPICAL GUI PATH(S):
Main Menu>Preprocessor>Loads>Apply
Main Menu>Solution>Loads>Apply
FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/
Release 5.3 Release 5.4
Component Products Release 5.3 Component Products Release 5.4
SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:
Apply loads to the finite element model using the SF or SFE
commands. Run multiple load steps using multiple SOLVE commands rather
than LSWRITE and LSSOLVE.
COMMENTS:
AUTHOR/CORRECTOR: DATE: January 22, 1997
Christopher W. Aiken
REVIEWED BY QA: DATE: January 22, 1997
William J. Bryan
APPROVAL: DATE: January 22, 1997
John A. Swanson
*_/ If a product name is n the "first incorrect version", the full ANSYS
program is implied. For products not listed, that apply, but see the
reverse side for equivalent product designations.
Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision. All
revisions after "corrected in" are corrected. Manual corrections are
included in on-tine documentation as appropriate. Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.
ANSYS QA NOTICE
NOTICE NO: QA97-01
SUBJECT: ASUM VSUM LIMITATION
DESCRIPTION:
The User's Manual fails to document the following limitation of the
ASUM and VSUM commands. ASUM and VSUM calculations for a very narrow
area or a very thin volume become inaccurate due to approximations
involved in the calculation when the ratio of the minimum to maximum
dimensions for any area involved falls below 0.01.
AFFECTED VERSIONS: Rev. 5.0A - Release 5.4 User Manual
COMMENTS:
Subdivide the area or volume into a number of divisions until the
ratio of the minimum dimension becomes larger than 0.01.
AUTHOR: DATE: January 22, 1997
Hasan Ahmad
REVIEWED BY QA: DATE: January 22, 1997
William J. Bryan
APPROVAL: DATE: January 22, 1997
John A. Swanson
SCB97-01
ANSYS Support Coordinator Bulletin
KEYWORDS: PC WINDOWS NT 4.0
DESCRIPTION:
The purpose of this bulletin is to provide ANSYS users with
information about the compatibility of ANSYS 5.3 with Windows NT 4.0.
Changes were made in Windows NT 4.0 such that the initial release of
ANSYS 5.3 (build UP071096) will not install.
The initial release of ANSYS 5.3 (build UP071096) was certified only on
Intel based PCs with Windows NT 3.51 and Windows 95. The second release
of ANSYS 5.3 (build UP100396) was certified with Windows NT 3.5 1,
Windows NT 4.0, and Windows 95 on Intel based PCs.
AFFECTED VERSIONS: Release 5.3 (build UP071096)
SUGGESTED USER ACTION:
If you are upgrading to Windows NT 4.0 on an Intel based PC, you
should contact your ANSYS Support Distributor (ASD) to obtain the second
release of ANSYS 5.3. If necessary, as an interim measure, the user can
temporarily create shortcuts to run each of the executables in the
ansys53 /bin directory for the initial release.
COMMENTS:
The ANSYS Installation and Configuration Guide for Release 5.3 for
the Windows NT and Windows 95 platform does not include the above
information. Note that for Digital Alpha PCs, only Microsoft Windows NT
3.51 is supported by both releases of ANSYS 5.3.
Author: Date: February 19, 1997
James A. Pasquerell
Reviewed by QA. Date: February 19, 1997
William J. Bryan
Approval: Date: February 19, 1997
John A. Swanson
Table "ANSYS 5.3 CLASS3 ERROR SUMMARY BY REPORT NUMBER" 3 pages omitted.
Table "ANSYS 5.2 CLASS3 ERROR SUMMARY BY REPORT NUMBER" 5 pages omitted.
*** END OF DOCUMENT ***
