Freeze or tie in linear analysis

Altair Forum User

Hello every body here,

this forum is really helpful, just keep the good work !

I know that in general contact problem is non linear BUT i would like to know if it is possible to perform 'linear analysis' with optistruct when the contact interface type is set to freeze or tie ?

 

Thanks a lot.

 

Best regards,

 

GAYE

 

 

 

 

Altair Forum User

Hello every body here,

this forum is really helpful, just keep the good work !

I know that in general contact problem is non linear BUT i would like to know if it is possible to perform 'linear analysis' with optistruct when the contact interface type is set to freeze or tie ?

 

Thanks a lot.

 

Best regards,

 

GAYE

 

 

 

 

 

Hi Gaye,

 

Using 'Freeze' contact in OptiStruct is no different than having the parts of your model connected at common nodes.  Internally OptiStruct creates a bunch of constraint equations to tie everything together.  I frequently run linear simulations using 'Freeze' contact without issue.