how to disable rotation

[ramkarim]

Hello,

I am very new to using both hypermesh and nastran.
I have used hypermesh to make the tube (SOLID) model shown in the picture. In the model i have constrained rotation of the selected nodes in x,y and z direction but after running a static analysis in MSC Nastran i see the model rotates.
Kindly suggest how i can stop this rotation.

Regards,
Ram

 

[ramkarim]

had problems in constraining the model. now its all solved.