Structural Dynamics

Structural Dynamics

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  3. In R18, Is it possible to delete the ln22 files to reduce hard disk space in the context of CMS with RBD ? How it is possible to do it ?

In R18, Is it possible to delete the ln22 files to reduce hard disk space in the context of CMS with RBD ? How it is possible to do it ?

Tagged: mechanical, Multibody, Other, structural-dynamics, structural-mechanics, Structural/ Commands APDL
    • June 5, 2023 at 7:04 am
      FAQFAQ
      Participant

      With the default option (ELCALC set to no in CMSOPT command), we must keep the ln22 files, because they are used in the subsequent expansion pass (along with the .cms file). With the new option in R18, ELCALC may set to yes in CMSOPT command, and ln22 files may be deleted, because all the modes of the transformation matrix as well, as the elemental results, are stored only in the .cms file which is sufficient for the expansion pass. With this option, the size of the .cms file will increase compared with the default approach. To delete the ln22 file, just issue SEOPT,CPXXX,2,,,NONE in a command snippet inserted below the condensed part, keeping in mind ELCALC must be set to yes in CMSOPT. Therefore a useful command insert (below the condensed part) would be the following : CMSOPT,FIX,6,,,,,CMS,,RBD,YES !specifies CMS analysis options SEOPT,CPXXX,2,,,NONE !specifies substructure analysis options

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