2 Replies Latest reply on Sep 21, 2012 4:06 PM by Anthony Botting

how to apply a pulsating load (pressure) in simulation?

Antony Jude Franco Sep 21, 2012 5:47 AM

I am trying to aplly a pulsating load of about 300psi in the back side of a diaphragm which is used to pump fluid. i am struggling in defining the boundry conditions such as stroke length, and no. of strokes per minute of the piston. How and where can i find the correct reference for this?

Thanks

anthony.

Re: how to apply a pulsating load (pressure) in simulation?

Richard Wehmeyer Sep 21, 2012 3:43 PM (in response to Antony Jude Franco)

Are you trying to set up a static study or non-linear? The static study will not give you the results you are looking for and I don't think non-linear handles time-step. What are you simulating (stress? displacement? fatigue? volume change? fluid?) and we will be better suited to help.
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Re: how to apply a pulsating load (pressure) in simulation?

Anthony Botting Sep 21, 2012 4:06 PM (in response to Antony Jude Franco)

Hi Antony: if you set up a time history (dynamic) analysis, the loads dialog has an input option to specify the load as a function of time. You could make an Excel spreadsheet with values and import it, or just type-in values.
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