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Concern about RBE3
Forum: MYSTRAN
Last Post: Admin
01-25-2024, 11:12 PM
» Replies: 2
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Abaqus/CCX to MYSTRAN/Nas...
Forum: MYSTRAN
Last Post: Admin
01-25-2024, 01:52 PM
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15.1.0 Update
Forum: MYSTRAN
Last Post: borges
12-19-2023, 02:50 PM
» Replies: 0
» Views: 690
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15.0 Released - Major Upd...
Forum: MYSTRAN
Last Post: borges
12-19-2023, 02:46 PM
» Replies: 1
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New User facing issues
Forum: MYSTRAN
Last Post: Admin
12-12-2023, 06:11 AM
» Replies: 1
» Views: 898
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Femap model hard crash
Forum: MYSTRAN
Last Post: borges
12-02-2023, 08:41 PM
» Replies: 0
» Views: 715
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Converting MSC Nastran In...
Forum: ComLab and NASTRAN-95
Last Post: ceanwang
03-28-2023, 09:47 PM
» Replies: 1
» Views: 2,671
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ComLab (an improved NASTR...
Forum: ComLab and NASTRAN-95
Last Post: Admin
12-13-2022, 04:55 AM
» Replies: 2
» Views: 6,730
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Windows Complie Issue
Forum: MYSTRAN
Last Post: realbabilu
11-18-2022, 10:23 AM
» Replies: 4
» Views: 5,212
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Mystran and Intel One API...
Forum: MYSTRAN
Last Post: Admin
11-17-2022, 02:48 AM
» Replies: 7
» Views: 9,531
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OP4 Discussion |
Posted by: Admin - 10-18-2022, 08:55 PM - Forum: MYSTRAN
- Replies (1)
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F04 is controlled by mystran.ini file, unless WRT_LOG set to >1 inside mystran.ini, F04 file is deleted at completion.
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Windows Complie Issue |
Posted by: Admin - 10-18-2022, 08:41 PM - Forum: MYSTRAN
- Replies (4)
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There may be some issues with compiling MYSTRAN in Windows. While it appears to be resolvable, can we make this either (a) more bullet-proof or (b) provide some instructions in the trouble shooting section of the build MD here: https://github.com/MYSTRANsolver/MYSTRAN...n/BUILD.md
From the Fortran forum, there is this thread, and the following notable comments:
https://fortran-lang.discourse.group/t/f...er/4529/13
- As suggested I tried building via MSYS2 (or rather MinGW-w64). That failed because despite a message that CMake 3.23 would be installed, I am stuck with CMake 3.17.
- Instead, I switched to Cygwin, which does have an up-to-date version on my machine.
- The configuration step started, but then I got a complaint that submodules had not been downloaded. No indication of what submodules are to be downloaded. There is no indication in the BUILD.md file either.
- A quick check of the MakeLists.txt file showed a few packages are needed, but there is no information that I can see about where to get the various packages.
- I was also surprised to see f2c - is that really necessary?
- The information in BUILD.md suggests though the script will do it. Is that outdated information?
Side note: I find a fairly recent version of CMake in the installation but it does not do much (no output, stops immediately - missing DLLs?). In the MinGW-w64 console a different version is invoked that actually works.
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Changes - 14.0 to Date |
Posted by: Admin - 09-20-2022, 05:12 AM - Forum: MYSTRAN
- No Replies
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14.0.1 to Date
TBD
14.0 to 14.0.1
Updated Source/LK9/L92/OFP3_ELFE_1D.f90 to place OGEL writes bush results regardless of the type of bush
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MITC Shell Elements - Need Developer! |
Posted by: Admin - 09-05-2022, 03:57 PM - Forum: MYSTRAN
- Replies (1)
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1 - One of the highest priorities (if not the highest) for MYSTRAN is to improve the shell elements and add shell buckling. There are currently 2 quad element options in MYSTRAN now, but both have limitations. MYSTRAN can not do buckling for shell elements (but it can do buckling for all other elements).
2 - A developer of another FE solver has incorporated the MITC shells into his code (3, 4, 6, and 8-noded). These are Bathe's formulation and are quite popular. He also developed the code shell buckling so we can use that code as reference. However, all if this code is in VB (Visual Basic) and I believe some C++. He has provided the code to me, but it is not for public use. It is only for developers and we need to make our own Fortran version. He said he used a lot of information from the following link and can assist us.
https://www.sesamx.io/blog/shell_finite_element/
3 - The open source solver CalculiX has developed a MITC 3-noded tri. Since this is coded in Fortran, it be useful to view this code.
4 - Harry Schaeffer helped Dick MacNeal develop shell elements for MSC. Harry developed his own variation of NASTRAN-95, which is known as ComLab. But there are some challenges with redistribution and maintenance of that program. Harry is assisting us by adding his 3-node tri and 4-node quad (and improved solids) to MYSTRAN. I believe he is also going to add shell buckling as well. There is no time frame to completion, but his code may be useful for adding the MITC elements.
5 - Cean has some notes for adding the drilling DOF stiffness (K6ROT) in the following link. MYSTRAN does not have K6ROT, but the developers think it would be a good idea to add it. Here is a PDF:
https://www.mystran.com/misc/Adding_PARA...Update.pdf
If you would like to help, post here or in the Discord channel: https://discord.com/invite/fUJr75H
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