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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Help: Reciprocating motion

Posted Jun 8, 2014, 1:16 p.m. EDT Version 4.3a 1 Reply

Jon Glover
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I'm trying to simulate reciprocating motion for a pin on disc type test for metal to metal heat exchanges. I am new to comsol and i have no idea how to simulate alternating motion without the use of conditional logic statements. My first idea was to create a velocity Vf, and alternate it with a function Vf(-1^n). where n is based off the derivitive of a sine function = 0 based upon the radius of reciprocating over time. where d(sin(x)) = 0 = max distance from reciprocating center. However i cannot find a way to "call" in real time simulation when the derivitive of the plot of radius V Time is equal to 0, and add a summation count for n.

Is there an easier way to simulate reciprocating motion in comsol?
1 Reply Last Post Jun 11, 2014, 3:26 p.m. EDT
David Kan COMSOL Employee

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Posted: 1 decade ago Jun 11, 2014, 3:26 p.m. EDT
Hi Jon,

Thanks for your note. This message is more suitable for the COMSOL Support portal. See: www.comsol.com/support/. Someone will get to you soon after you post your question there.

David
Hi Jon, Thanks for your note. This message is more suitable for the COMSOL Support portal. See: www.comsol.com/support/. Someone will get to you soon after you post your question there. David

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