What files exist in the directory after the crash?
How many dof's does your user element have?
Are all the files the same except for parameters? If so, post one of the files (if not too big).
Dear Professor,
1. Files in the directory: elmnt.f, uallocate.f, pelmin.f(to read additional data to user element), makefile, Istart, all Ifiles, Ostart, Lstart, S file (I don't know why it shows out), .dis file, .sum file (see attachment), Ocir files
2. User element has 3 degree of freedoms (a beam element)
3. Yes, that's right. I just change the Young's modulus and Poisson's ratio for each input file, the rest of the input file is totally the same. (see attachment)
Thank you and best regards,