I cannot run the project and solve the simulation

When I click update and result to run the project for NVH Analysis (in 1st picture) and also for CFD Analysis (in 2nd picture). It said failed to solve( in 3rd picture and 4th picture). When I click “Open” to view log file it telling me this (5th picture). I tried to run the project several times but it still say the same. I don’t know, it might come from saving location, notebook storage or other reasons.

1st_picture.jpg

2nd_picture.jpg

3rd_picture.jpg

4th_picture.jpg

5th_picture.jpg

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OptiStruct

SimLab

v2023.1

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Lavanya Vadamodala_20519

Hi Truc Hoang Ho,

It is difficult to understand the issue with 5th picture you shared.

Can you share the log file of the model?

You will find it in the folder where you save the results.

Thank you,

Lavanya

Truc Hoang Ho

Thank you for your quick reply! The log file in provided below:

************************************************************************
** **
** **
** Altair OptiStruct(TM) 2023.1 **
** **
** Advanced Engineering Analysis, Design and **
** Optimization Software from Altair Engineering, Inc. **
** **
** OptiStruct includes an enhanced proprietary version of NASTRAN **
** **
** **
** Windows 10 (Build 9200) LAPTOP-IN6ETDBH **
** 20 CPU: 12th Gen Intel(R) Core(TM) i7-12700H **
** 9181 MB RAM, 23462 MB swap **
** **
** Build: 1191523uwn33231_Ce64RB6s8UH14M:222418-000 4600400000002000 **
************************************************************************
** COPYRIGHT (C) 1996-2023 Altair Engineering, Inc. **
** All Rights Reserved. Copyright notice does not imply publication. **
** Contains trade secrets of Altair Engineering, Inc. **
** Decompilation or disassembly of this software strictly prohibited. **
************************************************************************


NOTE # 9199
MSGLMT=STRICT is active, all messages will be printed unless there is
a subsequent MSGLMT definition to limit error or warning messages.
You can also suppress some less important warning messages by use of
MSGLMT=BRIEF or UNREF (in config file or in the input data).

*** WARNING # 1052
Control card SPC is not specified for SUBCASE # 2.
Using ID 302 from default subcase.

8 PARAM(s) were set:
AUTOSPC,YES
CHECKEL,NO
G, .06
ACPREFDB, 1-9
ERPREFDB, 1-9
ERPC,343000.0
ERPRHO, 122-14
GFL, .06

*** WARNING # 1200
Incorrect or inconsistent data found in $HMxx cards.
(Obsolete data format or problems because of manual editing.).
All HyperMesh specific data will be skipped from input files.
Component information in the output file will be missing.
To rebuild this information - read back and recreate input file
using HyperMesh. This happened in line 2853935 of file
"IkerMAQ_NVH_Analysis_GF.fem":
$HMNAME COMP 50 "MountingBolt"


*** WARNING 1931: EIGRL/EIGRA/EIGRD SID= 4 is not referenced by Case Control.
*** WARNING 1931: FREQ1 SID= 3 is not referenced by Case Control.

*** INFORMATION # 4739
The structure of surface-to-surface contact element is quite different than
that of node-to-surface contact element. No internal CGAP/CGAPG elements are
created for surface-to-surface contact.

*** SUMMARY of characteristic edge length of CONTACT/TIE:
------------------------
CONTACT CharLen
------------------------
19 8.5951E+00
------------------------

*** INFORMATION # 815
The total number of rigid elements, whose rotational dependent d.o.f.
are removed because there is no need to constrain those d.o.f., is 4.

*** SUMMARY of reference nodal linear stiffness for penalty calculation
of penalty-based CONTACT/TIE:
-------------------------------------
CONTACT Secondary Main
-------------------------------------
19 6.9602E+05 1.8763E+06
-------------------------------------

*** WARNING: The amount of allocated memory exceeds available RAM - this
may cause significant slowing down of solution progress due to the swapping
out memory to the swap file. It is recommended to use out-of-core
solution to reduce memory requirements.


*** WARNING: The amount of allocated memory exceeds available RAM - this
may cause significant slowing down of solution progress due to the swapping
out memory to the swap file. It is recommended to use out-of-core
solution to reduce memory requirements.


*** WARNING # 2286
Disk space estimate for modal FRF/transient analysis
is based on modal space size = 1000.
Use param,numeg to set number of modes for memory/disk space estimate.

************************************************************************

OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------

FEM model file : IkerMAQ_NVH_Analysis_GF.fem
Output files prefix : IkerMAQ_NVH_Analysis_GF
Model read from files:
(*1) IkerMAQ_NVH_Analysis_GF.fem

************************************************************************

FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------

Total # of Grids (Structural) : 923867
Total # of Grids (Acoustic) : 474870
Total # of Elements Excluding Contact: 1871994
Total # of S2S Contact Elements (3D) : 23400 (no internally created CGAPG)
Total # of Rigid Elements : 49
Total # of Rigid Element Constraints : 2958
Total # of Degrees of Freedom : 2774424
(Structural)
Total # of Non-zero Stiffness Terms : 119412105

Element Type Information
------------------------

CTETRA Elements : 510794
CTETRA Elements (Acoustic) : 1334608
PLOTEL Elements : 1200
CACINF3 Elements : 25392

Load and Boundary Information
-----------------------------

LOAD and TEMP Sets: 135
SPC Sets : 2

Material and Property Information
---------------------------------

PSOLID Cards : 2
PACINF Cards : 1
MAT1 Cards : 2
MAT10 Cards : 1

S2S Contact Element Connectivity Information
--------------------------------------------

Average # of nodes per element : 22
Maximum # of nodes per element : 44

************************************************************************

OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------

NO DESIGN MATERIAL OR DESIGN VARIABLES FOUND : ANALYSIS ONLY

------------------------------------------------
Fluid-Structure Modal Dynamic Subcase Summary :
------------------------------------------------

---------- -------- -------- -------- -------- -------- -------- -------- ------ ---------------------
Subcase ID SPC ID DLOAD ID FREQ ID S METHOD F METHOD S SDAMP F SDAMP RESVEC Preloading Subcase ID
---------- -------- -------- -------- -------- -------- -------- -------- ------ ---------------------
2 302 308 2 2 3 NONE NONE ON
---------- -------- -------- -------- -------- -------- -------- -------- ------ ---------------------

----------------------------------------------------------------------------
The percentage of coupling for the fluid faces: 98

The number of coupled fluid faces at the structural interface: 140413
The number of acoustically rigid faces: 1505

The maximum number of structural grids associated with any
fluid element face: 22
The average number of structural grids associated with a
fluid element face: 6

----------------------------------------------------------------------------

Run Type : Analysis Only (No design elements)
Run at location : /PART_3_CFD_SOLVED/IkerMAQ_NVH_Analysis_GF(3)/
Scratch file directory : /PART_3_CFD_SOLVED/IkerMAQ_NVH_Analysis_GF(3)/
Free space: 25.198 GB
Number of CPU processors : 3

************************************************************************

MEMORY ESTIMATION INFORMATION :
-------------------------------

Solver Type is: Sparse-Matrix Solver
Direct Method
AMSES Eigenvalue Extraction for Structure
AMSES Eigenvalue Extraction for Fluid

Static Memory (RAM) Allocated in Preprocessor : 6928 MB
Estimated Total Memory (RAM) : 6928 MB

Estimated Memory (RAM) for Out-of-Core Solution : 5406 MB
Estimated Memory (RAM) for In-Core Solution : 6928 MB
Recommended # of Processes (-np) for Load Decomposition : > 3
(Note: The Minimum Memory Requirement is limited by Assembly Module.)

DISK SPACE ESTIMATION INFORMATION :
-----------------------------------

Estimated Disk Space for Output Data Files : 806 MB
Estimated Scratch Disk Space for In-Core Solution : 57319 MB
Estimated Scratch Disk Space for Out-of-Core Solution : 61771 MB

************************************************************************

BEGINNING ANALYSIS SOLUTION ....

************************************************************************

ANALYSIS RESULTS :
------------------

*** WARNING # 1971
Current run is likely to fail due to insufficient disk space.
Estimated disk space requirement = 58125 MB
Estimated disk space available = 25198 MB
Suggestions to reduce disk space requirements:
For static analysis - reduce the number of loadcases.
For eigenvalue/buckling analysis - reduce frequency range in
EIGRL card or number of modes requested.
For FRF analysis - reduce the number of loading frequencies.
For transient analysis - reduce the number of output time steps.

ITERATION 0

Lavanya Vadamodala_20519

Thank you for your quick reply! The log file in provided below:

************************************************************************
** **
** **
** Altair OptiStruct(TM) 2023.1 **
** **
** Advanced Engineering Analysis, Design and **
** Optimization Software from Altair Engineering, Inc. **
** **
** OptiStruct includes an enhanced proprietary version of NASTRAN **
** **
** **
** Windows 10 (Build 9200) LAPTOP-IN6ETDBH **
** 20 CPU: 12th Gen Intel(R) Core(TM) i7-12700H **
** 9181 MB RAM, 23462 MB swap **
** **
** Build: 1191523uwn33231_Ce64RB6s8UH14M:222418-000 4600400000002000 **
************************************************************************
** COPYRIGHT (C) 1996-2023 Altair Engineering, Inc. **
** All Rights Reserved. Copyright notice does not imply publication. **
** Contains trade secrets of Altair Engineering, Inc. **
** Decompilation or disassembly of this software strictly prohibited. **
************************************************************************


NOTE # 9199
MSGLMT=STRICT is active, all messages will be printed unless there is
a subsequent MSGLMT definition to limit error or warning messages.
You can also suppress some less important warning messages by use of
MSGLMT=BRIEF or UNREF (in config file or in the input data).

*** WARNING # 1052
Control card SPC is not specified for SUBCASE # 2.
Using ID 302 from default subcase.

8 PARAM(s) were set:
AUTOSPC,YES
CHECKEL,NO
G, .06
ACPREFDB, 1-9
ERPREFDB, 1-9
ERPC,343000.0
ERPRHO, 122-14
GFL, .06

*** WARNING # 1200
Incorrect or inconsistent data found in $HMxx cards.
(Obsolete data format or problems because of manual editing.).
All HyperMesh specific data will be skipped from input files.
Component information in the output file will be missing.
To rebuild this information - read back and recreate input file
using HyperMesh. This happened in line 2853935 of file
"IkerMAQ_NVH_Analysis_GF.fem":
$HMNAME COMP 50 "MountingBolt"


*** WARNING 1931: EIGRL/EIGRA/EIGRD SID= 4 is not referenced by Case Control.
*** WARNING 1931: FREQ1 SID= 3 is not referenced by Case Control.

*** INFORMATION # 4739
The structure of surface-to-surface contact element is quite different than
that of node-to-surface contact element. No internal CGAP/CGAPG elements are
created for surface-to-surface contact.

*** SUMMARY of characteristic edge length of CONTACT/TIE:
------------------------
CONTACT CharLen
------------------------
19 8.5951E+00
------------------------

*** INFORMATION # 815
The total number of rigid elements, whose rotational dependent d.o.f.
are removed because there is no need to constrain those d.o.f., is 4.

*** SUMMARY of reference nodal linear stiffness for penalty calculation
of penalty-based CONTACT/TIE:
-------------------------------------
CONTACT Secondary Main
-------------------------------------
19 6.9602E+05 1.8763E+06
-------------------------------------

*** WARNING: The amount of allocated memory exceeds available RAM - this
may cause significant slowing down of solution progress due to the swapping
out memory to the swap file. It is recommended to use out-of-core
solution to reduce memory requirements.


*** WARNING: The amount of allocated memory exceeds available RAM - this
may cause significant slowing down of solution progress due to the swapping
out memory to the swap file. It is recommended to use out-of-core
solution to reduce memory requirements.


*** WARNING # 2286
Disk space estimate for modal FRF/transient analysis
is based on modal space size = 1000.
Use param,numeg to set number of modes for memory/disk space estimate.

************************************************************************

OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------

FEM model file : IkerMAQ_NVH_Analysis_GF.fem
Output files prefix : IkerMAQ_NVH_Analysis_GF
Model read from files:
(*1) IkerMAQ_NVH_Analysis_GF.fem

************************************************************************

************************************************************************

FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------

Total # of Grids (Structural) : 923867
Total # of Grids (Acoustic) : 474870
Total # of Elements Excluding Contact: 1871994
Total # of S2S Contact Elements (3D) : 23400 (no internally created CGAPG)
Total # of Rigid Elements : 49
Total # of Rigid Element Constraints : 2958
Total # of Degrees of Freedom : 2774424
(Structural)
Total # of Non-zero Stiffness Terms : 119412105

Element Type Information
------------------------

CTETRA Elements : 510794
CTETRA Elements (Acoustic) : 1334608
PLOTEL Elements : 1200
CACINF3 Elements : 25392

Load and Boundary Information
-----------------------------

LOAD and TEMP Sets: 135
SPC Sets : 2

Material and Property Information
---------------------------------

PSOLID Cards : 2
PACINF Cards : 1
MAT1 Cards : 2
MAT10 Cards : 1

S2S Contact Element Connectivity Information
--------------------------------------------

Average # of nodes per element : 22
Maximum # of nodes per element : 44

************************************************************************

************************************************************************

OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------

NO DESIGN MATERIAL OR DESIGN VARIABLES FOUND : ANALYSIS ONLY

------------------------------------------------
Fluid-Structure Modal Dynamic Subcase Summary :
------------------------------------------------

---------- -------- -------- -------- -------- -------- -------- -------- ------ ---------------------
Subcase ID SPC ID DLOAD ID FREQ ID S METHOD F METHOD S SDAMP F SDAMP RESVEC Preloading Subcase ID
---------- -------- -------- -------- -------- -------- -------- -------- ------ ---------------------
2 302 308 2 2 3 NONE NONE ON
---------- -------- -------- -------- -------- -------- -------- -------- ------ ---------------------

----------------------------------------------------------------------------
The percentage of coupling for the fluid faces: 98

The number of coupled fluid faces at the structural interface: 140413
The number of acoustically rigid faces: 1505

The maximum number of structural grids associated with any
fluid element face: 22
The average number of structural grids associated with a
fluid element face: 6

----------------------------------------------------------------------------

Run Type : Analysis Only (No design elements)
Run at location : /PART_3_CFD_SOLVED/IkerMAQ_NVH_Analysis_GF(3)/
Scratch file directory : /PART_3_CFD_SOLVED/IkerMAQ_NVH_Analysis_GF(3)/
Free space: 25.198 GB
Number of CPU processors : 3

************************************************************************

************************************************************************

MEMORY ESTIMATION INFORMATION :
-------------------------------

Solver Type is: Sparse-Matrix Solver
Direct Method
AMSES Eigenvalue Extraction for Structure
AMSES Eigenvalue Extraction for Fluid

Static Memory (RAM) Allocated in Preprocessor : 6928 MB
Estimated Total Memory (RAM) : 6928 MB

Estimated Memory (RAM) for Out-of-Core Solution : 5406 MB
Estimated Memory (RAM) for In-Core Solution : 6928 MB
Recommended # of Processes (-np) for Load Decomposition : > 3
(Note: The Minimum Memory Requirement is limited by Assembly Module.)

DISK SPACE ESTIMATION INFORMATION :
-----------------------------------

Estimated Disk Space for Output Data Files : 806 MB
Estimated Scratch Disk Space for In-Core Solution : 57319 MB
Estimated Scratch Disk Space for Out-of-Core Solution : 61771 MB

************************************************************************

BEGINNING ANALYSIS SOLUTION ....

************************************************************************

ANALYSIS RESULTS :
------------------


*** WARNING # 1971
Current run is likely to fail due to insufficient disk space.
Estimated disk space requirement = 58125 MB
Estimated disk space available = 25198 MB
Suggestions to reduce disk space requirements:
For static analysis - reduce the number of loadcases.
For eigenvalue/buckling analysis - reduce frequency range in
EIGRL card or number of modes requested.
For FRF analysis - reduce the number of loading frequencies.
For transient analysis - reduce the number of output time steps.

ITERATION 0

Hi Truc,

The issue is coming due to insufficient memory.

Can you try to run on a disk with more free space?

Thank you,

Lavanya

Truc Hoang Ho

Hi Truc,

The issue is coming due to insufficient memory.

Can you try to run on a disk with more free space?

Thank you,

Lavanya

Hi Lavanya,

I am currently using an Education version of Simlab on my computer and I am doing an example from this PART 3: 3D CFD ANALYSIS (AIR COOLING)
MODELING AND ANALYSIS OF ELECTRIC MOTORS WITH SIMLAB 2023.1

Is there anything I can do go get the result with the version I am having?

acuSolve: Input CPU/Elapse time = 6.297000e+00 3.116000e+00 Sec
acuSolve: Input Memory Usage = 2.526000e+03 Mbytes
acuSolve: *** ERROR: Number of nodes <785332> exceed 500000 limit for EDU license
acuRun: *** ERROR: error occurred executing acuSolve

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