Welcome, Guest
You have to register before you can post on our site.

Username
  

Password
  





Search Forums

(Advanced Search)

Latest Threads
Concern about RBE3
Forum: MYSTRAN
Last Post: Admin
01-25-2024, 11:12 PM
» Replies: 2
» Views: 681
Abaqus/CCX to MYSTRAN/Nas...
Forum: MYSTRAN
Last Post: Admin
01-25-2024, 01:52 PM
» Replies: 0
» Views: 388
15.1.0 Update
Forum: MYSTRAN
Last Post: borges
12-19-2023, 02:50 PM
» Replies: 0
» Views: 524
15.0 Released - Major Upd...
Forum: MYSTRAN
Last Post: borges
12-19-2023, 02:46 PM
» Replies: 1
» Views: 727
New User facing issues
Forum: MYSTRAN
Last Post: Admin
12-12-2023, 06:11 AM
» Replies: 1
» Views: 698
Femap model hard crash
Forum: MYSTRAN
Last Post: borges
12-02-2023, 08:41 PM
» Replies: 0
» Views: 575
Converting MSC Nastran In...
Forum: ComLab and NASTRAN-95
Last Post: ceanwang
03-28-2023, 09:47 PM
» Replies: 1
» Views: 2,353
ComLab (an improved NASTR...
Forum: ComLab and NASTRAN-95
Last Post: Admin
12-13-2022, 04:55 AM
» Replies: 2
» Views: 6,398
Windows Complie Issue
Forum: MYSTRAN
Last Post: realbabilu
11-18-2022, 10:23 AM
» Replies: 4
» Views: 4,796
Mystran and Intel One API...
Forum: MYSTRAN
Last Post: Admin
11-17-2022, 02:48 AM
» Replies: 7
» Views: 8,817

 
  CQUAD4 in bending test
Posted by: O_Stodieck - 08-27-2020, 06:01 PM - Forum: MYSTRAN - Replies (27)

Hi, 

I am getting some unexpected results running the attached cantilevered composite plate model in Mystran 11.0. :

  • The model is a flat plate in the X-Y plane, with dimensions of 1.5m x 0.15m and fully fixed at one of the short ends. 
  • A Z-direction shear force is applied through an RBE3 at the unsupported end (Grid 737).
  • I would expect a Z-deflection at Grid 737 close to T3 = 0.29625 (simple CLT calculation and in agreement with other FEM solvers)
  • But I am getting T3 = 0.03613559 at Grid 737 instead.
  • AUTO SPC forces are zero (constraining Z-rotations / drilling DOF on the CQUADs only)
Any ideas what could trigger this behaviour?

Do you have a simple test case for shell (CQUAD4) element bending that I can run to test the installation? 
Thanks.



Attached Files
.txt   shell_bending.txt (Size: 122.08 KB / Downloads: 28)
Print this item

  Batch file to solve test cases in one folder
Posted by: ceanwang - 08-24-2020, 10:58 PM - Forum: MYSTRAN - Replies (1)

Hi,

Same as the 3-TestRuns folder, create a 8-Test folder and save this msolve.bat file in it. Please remove the txt extension.
Run, it will solve all dat files in 3-TestRuns\Statics\Banded\CurrentRuns folder.

Regards,

Cean


After solving all the cases, you could compare the newly generated *.ANS to the corresponding *.ARC files under the 3-TestRuns\Statics\Banded\Archive folder using these two bat files. Also save and run in 8-test folder. Please remove the txt extension.

cpARC.bat will call compareARC.ps1 to compare the pair of files line by line. compareARC.ps1 is a Window 10 PowerShell's script. It will write the difference into the cpDiff.txt file.

The problem at the moment for me is that the ARC file treat 0 different to my ANS file. One has - sign at the front of 0. I think if the exe is generate by same compiler, there will be no problem.



Attached Files
.txt   msolve.bat.txt (Size: 2.29 KB / Downloads: 1)
.txt   cpArc.bat.txt (Size: 76 bytes / Downloads: 1)
.txt   compareArc.ps1.txt (Size: 8.64 KB / Downloads: 1)
Print this item

  ParaView documentation
Posted by: Dom - 08-24-2020, 03:43 PM - Forum: MYSTRAN - Replies (4)

Hello,

Is there documentation on how to use Paraview as a post-processor of MYSTRAN?

Thanks
Dom

Print this item

  Gmsh
Posted by: JuanP74 - 08-19-2020, 06:35 AM - Forum: Pre/Post Processors - Replies (10)

Hello,



I would recommend gmsh, at least for postprocessing. The MSH file formats (ASCII and binary) are very well suited for it in my experience (small, medium model sizes) and in ascii format easy to check and modify if necessary. Plotting capabilities are as good as femap and allows for nodal and elemental results. I have created the files with text processor sometimes for small models using f06 results. I think is as good as femap .neu file and easier to read and can be used with a software that is free & open source that does not need installation and runs in all platforms (macOS, windows and linux).

http://gmsh.info/doc/texinfo/gmsh.html#M...egacy_0029

I attach an example so you can check by yourselves (this is an ascii file in legacy format 2) for normal modes of a small model (remove .txt extension before opening with gmsh).



Attached Files
.txt   shelf.msh.txt (Size: 16.36 KB / Downloads: 10)
Print this item

  gFortran 8.1.0 for Windows
Posted by: ceanwang - 08-15-2020, 01:40 AM - Forum: MYSTRAN - No Replies

Hi,

It is from MinGW-w64 project. Code::Block uses this version.

You could download it from https://sourceforge.net/projects/mingw-w64/

With cmake, you could use it to compile MYSTRAN in DOS terminal.

Regards,

Cean

Print this item

  Linux Compiling
Posted by: O_Stodieck - 08-06-2020, 08:58 AM - Forum: MYSTRAN - Replies (18)

What are the options for compiling on Linux Ubuntu? Is there a CMake file for linux?

The github instructions are not very enlightening:
"If compiling for Linux:

1. Rename the other 3 files in this directory to have a ".f90" extension instead of a ".tmp" extension.
2. Delete the files in the "1_Windows" directory."

Print this item

  hfcNASTRAN95 - Pre/Post processing for NASTRAN95
Posted by: ceanwang - 07-26-2020, 10:44 PM - Forum: ComLab and NASTRAN-95 - Replies (2)

Hi,

The project is at https://github.com/ceanwang/hfcNastran95

Some case photos could be seen from this post:

https://forum.freecadweb.org/viewtopic.php?f=18&t=39234

and demo case:

https://forum.freecadweb.org/viewtopic.php?f=18&t=48982

Regards,

Cean

Print this item

  OLD - CURRENT AND ARCHIVE VERSIONS
Posted by: Admin - 06-24-2020, 05:53 AM - Forum: MYSTRAN - Replies (3)

This thread is considered to be outdated, but is kept for reference. For the most current and archive versions, see:

https://www.mystran.com/forums/showthread.php?tid=83

---OUTDATED THREAD FOLLOWS---

LAST EDIT: 11/11/2021

For end users, the following links are for the most current official version:

Version 13.3
Windows EXE - https://www.mystran.com/versions/MYSTRAN_13.3A.zip - Compiled by Bill Case
Windows EXE - https://www.mystran.com/versions/MYSTRAN_13.3B.zip - Compiled by TBD
Linux - See the procedure on GitHub: https://github.com/dr-bill-c/MYSTRAN
Documentation (NEEDS UPDATE) - https://www.mystran.com/documentation/MY...9_2021.zip
Benchmark Runs and Process - https://www.mystran.com/versions/Benchma...29_2021.7z

Notable Modifications from the prior official version:
-TBD

Additional files not commonly used by end users:
Source Code (in Zip Form as opposed to GitHub form - direct download) -  https://www.mystran.com/versions/MYSTRAN...Source.zip
Test Problem Hand Calculations (60MB) - www.mystran.com/documentation/MYSTRAN_Test_Problem_Hand_Calculations.pdf

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

NOTE: The most current source code for developers is on GitHub ( https://www.mystran.com/forums/showthread.php?tid=2 ).

Print this item

  Compile with CMake
Posted by: Admin - 06-18-2020, 05:13 AM - Forum: MYSTRAN - Replies (1)

EDIT: See also this thread: https://www.mystran.com/forums/showthread.php?tid=2

Cean Wang has created the files necessary to use CMake. He has also provided instructions in the link below. Note that the source code he used is an example and we will be updating the source code and it will be added to GitHub.

https://mystran.com/compile/CMake.zip

Also, as an FYI, we now have instructions for how to compile MYSTRAN with Code::Blocks. That will be provided once we upload the latest source code on GitHub.

Print this item

  OLD - Documentation Control
Posted by: Admin - 06-08-2020, 04:31 AM - Forum: MYSTRAN - No Replies

This thread is considered to be outdated, but is kept for reference. For the most current source code and compiling instructions, see:



https://www.mystran.com/forums/showthread.php?tid=83



---OUTDATED THREAD FOLLOWS---



The documentation is controlled by specific developers (as opposed to by the general community).



For the most recent documentation, see this thread: https://www.mystran.com/forums/showthread.php?tid=39



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



The following is a list of pending modifications/updates (all updates are current as of 1/29/2021)



http://www.mystran.com/documentation/ToDo_Updates.doc



If you wish to request documentation updates, contact Bill Case at the email listed at https://www.mystran.com/



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



Prior Corrections:

http://www.mystran.com/documentation/Corrected.doc

Print this item