CDH/OPTRAN Version 4.4.1

New Release Version CDH/OPTRAN Version 4.4.1 is now available for download.

More Information: PDF


Dear OPTRAN user

CDH is pleased to inform you, that CDH/OPTRAN Release Version 4.4.1 is now available on CDH FTP server.

The latest CDH/OPTRAN release version offers following new features, enhancements and corrections:

Bug-fixes and Corrections

  • Bug fix for errors in pressure responses when B2PP is present in the Nastran job.
  • Bug fix for missing strain energy data blocks in op2 file using the structural grid participation factor (SGPPF) integration method and SE=MEAN option.
  • Bug fix for SGPPF calculations when A2GG is present in the model.
  • Minor improvements in FastFRS license management.


 For further technical details, please refer to attached release note document.


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