Inertial relief application
Hello,
I'm designing a double wishbone suspension for my master's degree. I prepared the model with Hypermesh and now i wanted to apply the loads to do a static analysis.
I saw on the guide that the suspension arms can be analysed with the inertial relief, so i did the analysis by setting the PARAM inrel to -2, to let the software apply automatically the boundary conditions while i applied the loads normally; however, the analysis gave me very large displacements that cannot exist in reality.
So i wanted to ask if it is correct to use the inertial relief on a system of bodies (two arms, hub carrier and steering arm) since i read that this analysis can constrain only 6 DOF while my system has more than 6 DOF, or if it is possible to apply some SPC constraints to control the motion of the bodies.
Thank you in advance for your response.
Answers
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Hi Daniele,
Inrel -1 allows you to constrain your model partially by spcs which have 'suport' card image as long as the system doesn't become statically solvable.
Check out this tutorial https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/3d_inertia_relief_analysis_r.htm
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