Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. jmarcoj

    NASTRAN output coordinate system

    Thank you very much indeed for your valuable help. PARAM,OMID,YES does work with the linear solver 101 and that solves half of my problems :) Unfortunately it doesn't work with the non-linear solver 106 although in Nastran manual it is written it does :( I keep getting the stresses in the...
  2. jmarcoj

    NASTRAN output coordinate system

    You are right, the default option for stresses is: STRESS(SORT1,PRINT,REAL,VONMISES,CENTER,RPRINT)=ALL Where CENTER means that, for CQUAD4, the stresses are given at the centre only. I have already tried using the option CORNER instead of CENTER to have also the stresses at the corner of the...
  3. jmarcoj

    NASTRAN output coordinate system

    The node coordinate system is the right one, the problem is that stresses are printed in the CQUAD4 element coordinate system which depends in the way the nodes are numbered. For that reason displacements are in the right coordinate system, but stresses are not. I tried using: PARAM,S1M,1 which...
  4. jmarcoj

    NASTRAN output coordinate system

    Thanks for your reply but how can I do it? I have been reading the guide but I can't find anything about that.
  5. jmarcoj

    NASTRAN output coordinate system

    Hi everybody, I am working with NASTRAN and I have a problem. When I use CQUAD4 elements, the stresses are given in the element reference system. That reference system is computed by NASTRAN using the element diagonal bisector method. Basically, the x-axis is between the node2 and node3 of the...
  6. jmarcoj

    changing the output coordinate system for CQUAD4

    Hi everybody, I am working with NASTRAN and I have a problem. When I use CQUAD4 elements, the stresses are given in the element reference system. That reference system is computed by NASTRAN using the element diagonal bisector method. Basically, the x-axis is between the node2 and node3 of the...
  7. jmarcoj

    rigid element for 3D analysis NASTRAN

    Thank very much indeed. This infomation was really useful. Cheers
  8. jmarcoj

    rigid element for 3D analysis NASTRAN

    Thank very much for your help. I thought about coating CHEXAs with CQUADs but the problem is...what property and thickness should I give the CQUADs in order not to affect the analysis?
  9. jmarcoj

    rigid element for 3D analysis NASTRAN

    I am working with 3D elements (CHEXA) using NASTRAN. I need to use rigid elements and I am using RBE2s but they are not rigid at all for 3D analysis. I have alread used those elements before (2D models) and they work great but when I try and connect brick elements the rigid elements RBE2 are not...

Part and Inventory Search

Back
Top