Reply To: Using CONTROL_REFERENCE_CONFIGURATION

[Webster]

Hi Reno,

Unfortunately, I cannot run the script without the case option. The Sellier’s method or Rausch’s method employed in LS-Dyna are both iterartive optimisation procedures, I cannot run iteration 2 without knowning a priori from iteration 1 - this means we need to fed the result from iteration 1 as the initial guess for iteration 2.

LS-Dyna automatically generate .inp files (iter1.inp, iter2.inp, etc) for the iteration purposes, and from iteration 2, the keyword is automatically set to *CONTROL_REFERENCE_CONFIGURATION_ITER, which is the only method that allows the result from iteration 1 to be fed as the initial guess for iteration 2. 

The problem appears with the keyword *CONTROL_REFERENCE_CONFIGURATION_ITER, which the access violation error is reported, regardless of the version (tried with v13, v14, v14.1, v15), or computation precision (single or double), or parallelism mode (smp/mpp).

I understand you could not download any files from the site. Could you please kindly quickly check the script (attched below as a screenshot) and see if there are any obvious issues with it? Also, what does the error message 'forrtl: severe (157): Program Exception - access violation' indicate? Would you recommend me running LS-Dyna on a Linux machine, rather than on a Windows PC?

Thank you,

Binghuan