Although there is no technical support available for NASA NSTRAIN-95, there is a fork here which runs reasonably well on Linux https://github.com/ldallolio/NASTRAN-95/. It confirms work well in windows 7 also as follows:
1. Install MSYS2
2. Install following software in MSYS2
pacman -S autoconf automake libtoll
pacman -S gcc gcc-fortran
pacman -S git
3. Download NASTRAIN -95 by git clone https://github.com/Idallolio/NASTRAN-95.git
4. Modify file /mds/nastrn.f
COMMON / ZZZZZZ / IZ(400000000) => IZ(4000000)
LENOPC = 400000000 => LENOPC = 4000000
which depends upon your memory size
5. In directory where NASTRAIN-95 downloaded, run
sh bootstrap and make
the exe file nastran.exe will be generated in subdirectory /mds
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