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How to apply a time dependent sinusoidal body load?
Posted 2018年8月22日 GMT-4 16:43 Structural & Acoustics, Parameters, Variables, & Functions, Studies & Solvers 4 Replies
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I have a solid mechanics module + time dependent study. How can I apply a sinusoidal time dependent load (to simulate sinusoidal base excitation)?
-------------------P.C.
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BEFORE doing a time dependent study- find out whether a frequency dependent (sinusoidal steady state) analysis is sufficient.
Sinusoidal steady state is easier to set up and almost always converges.
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@D Greve, thanks for the reply.
Hi I am looking for nonlinear (geometric) large deflection response and I think time dependent would be most apt.
I am trying to apply the load (base excitation) as a body force (as shown in the snapshot attacked to my 1st post). Any suggestions?
-------------------P.C.
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You can type a mathematical expression like the one in your screenshot, but the variable for time is "t", not "time".
Best,
Jeff
-------------------Jeff Hiller
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Hi I am looking for nonlinear (geometric) large deflection response
In that case I agree you will need to do time dependent analysis.
Be aware that the system may take a very long time to reach steady state if it is lightly damped. Running a very long time-dependent simulation takes considerable computation time and may diverge.