CDH/OPTRAN Version 5.1

CDH/OPTRAN Version 5.1 steht zum Download zur Verfügung.

Weitere Informationen: PDF


Dear OPTRAN user

CDH is pleased to inform you, that CDH/OPTRAN Release Version 5.1 is now available for download.

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


  • Fast computation for Frequency Dependent CAABSF
  • Support Nastran LFREQ
  • Output multiple PUNCH files
  • New FREQFILTER command
  • Request modal solution SDISP output
  • Performance improvement for SMPF/FMPF
  • New command line parameter NASAUTH, NASOUT
  • Performance improvements for ROA=YES
  • New Override_CLI command in request file
  • Support of ATV in ERP/NVELO computations
  • Enhanced support for NASTFREQS and NASTSUBID

Bug fixes

  • Corrected errors for enforced motion with SPCD
  • Corrected errors in support of models with K2PP, B2PP matrices
  • Stabilised computation with CDH/FastFRS for Frequency Dependent elements
  • Minor fixes in ESUM and Random analyses


13.01.2023 GNS Animator4 V2.6.2

Release Version steht zum Download bereit.

15.11.2022 CDH/AMLS V5.2. & FastFRS V2.2 (revision 179)

CDH/AMLS version5.2 und CDH/FastFRS 2.2 (revision 179) steht zum Download zur Verfügung.

29.09.2022 VDI SIMVEC 2022

Besuchen Sie uns auf der VDI SIMVEC 2014 vom 22. – 23. November 2022

28.09.2022 NAFEMS DACH Regionalkonferenz 2022

Besuchen Sie uns auf der NAFEMS DACH Regionalkonferenz 2022 vom 04. – 06. Oktober 2022 in Bamberg