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Applying Analytical Function as Boundary Condition

Posted Apr 25, 2013, 3:42 a.m. EDT Materials, Parameters, Variables, & Functions, Structural Mechanics Version 4.3a 0 Replies

David Sanchez
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I know this has been asked a lot... but none of the solutions mentioned in the search I did in the forum solved my problem. I'm simulating a piezoelectric membrane, and doing a Time Dependent Study of it's displacement.

I want to apply a time variable rectangular function as an electrical input. I already plotted the rect() function in a an1() function: Vp=45V; Rt=200us; fo=50Hz

expression: Vp*rect1(t[1/s])
argument: t
function: V
"make periodic" lower limit: -Rt
"make periodic" upper limit: -Rt+1/fo

The plot of the an1() function is exactly what I need. But when I try the apply it to the "Electrical Potential" Boundary condition (BC) I write: an1(t,V); an1(t[1/s]); an1(t,V,t[1/s]); an1(V).... all of those give the same problem: "Unexpected Unit of Input" what is the correct way to write it so the unit seen by the BC is volts [V]???

Any help will be appreciated

0 Replies Last Post Apr 25, 2013, 3:42 a.m. EDT
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Hello David Sanchez

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