Rigid modes response in structural dynamic analysis
Rigid modes response in structural dynamic analysis
(OP)
How to understand the response from rigid body modes in modal transient analysis of free free aircraft model with landing gear loads. Does rigid modes respond to excitation part beyond 0 frequency?





RE: Rigid modes response in structural dynamic analysis
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Greg Locock
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RE: Rigid modes response in structural dynamic analysis
RE: Rigid modes response in structural dynamic analysis
I thought rigid body motion was an artifice of FEM, as opposed to a real world thing. eg if I apply equal and opposite loads to a model, I still have to restrain the rigid modes even though they aren't doing anything.
another day in paradise, or is paradise one day closer ?
RE: Rigid modes response in structural dynamic analysis
For instance consider a simple spring mass system. At 0 hz you will merely stretch the spring.
Cheers
Greg Locock
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