How can I compute a force vector from a displacement

Minsik Seo

Hi

I'm trying to find a load vector that deforms a mesh with a predescribed displacement.

It can be simply done mathematically by f = Ku.

How can I do this with HyperMesh Optistruct?

 

 

fujita

SPCFORCE

https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/spcforce_io_r.htm?zoom_highlightsub=SPCF

or

GPFORCE

https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/gpforce_io_r.htm?zoom_highlightsub=GPFORCE

give node forces.

These are set from Analysis>control cards>next>GLOBAL_OUTPUT_REQUEST>GPFORCE, SPCFORCE in HyperWorks.