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Output for Param, inrel

Nicolas_20776

I like to know what acceleration OS chooses to get into equilibrium with my static forces in an "Param, inrel" analysis.
Where to find the output or how to create it.

Thanks for our help.

Nicolas

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OptiStruct

v2023.1

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Rajashri_Saha

Hi Nicolas,

In OS, the inertia forces of the body balance the externally applied load during Inertia relief analysis. The inertia forces get calculated considering the structure as rigid body.

You can go through below tutorial for set up in Optistrut.

https://help.altair.com/hwsolvers/os/topics/solvers/os/3d_inertia_relief_analysis_r.htm?zoom_highlight=inertia+relief+analysis

Thanks

Rajashri

Nicolas_20776

To get the acceleration OS uses in an inertia relief analysis the

PARAM,PRINFACC,1

can be used to get the output in the .out file.

Rajashri_Saha

To get the acceleration OS uses in an inertia relief analysis the

PARAM,PRINFACC,1

can be used to get the output in the .out file.

Yes, this card will write the rigidbody forces and acceleration to the .out file.