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sinusoidal function

Posted 2012年10月23日 GMT-4 08:25 Version 4.2 3 Replies

Anup Paul
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Dear all


I have to use a sinusoidal function [e,g X0+(X1*(cos*(w*t)))]. Where and how can I write it?




rgds


Anup
3 Replies Last Post 2013年1月5日 GMT-5 06:40
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年10月23日 GMT-4 10:58
Hi

define an analytical function then add in your expression and change the argument to "t", have w and X0, X1 defined as parameter and then plot to check it.

Then in your equation / BC entry write an1(t) or an1(t[1/s]) if you have not set the argument units (you should it's cleaner ...)

--
Good luck
Ivar
Hi define an analytical function then add in your expression and change the argument to "t", have w and X0, X1 defined as parameter and then plot to check it. Then in your equation / BC entry write an1(t) or an1(t[1/s]) if you have not set the argument units (you should it's cleaner ...) -- Good luck Ivar
Anup Paul
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Posted: 1 decade ago 2012年10月23日 GMT-4 13:03
Thanx ......


Thanx ......
Anup Paul
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Posted: 1 decade ago 2013年1月5日 GMT-5 06:40
Hi Ivar

please help to write the above equation

Y=X0*(1+sin*(w*t))

where

w=2*pi*f (rad/s), t=argument(s)

I have tried with analytical function after defining w in variables and all other constants in parameters.

when I tried to plot it shows following errors:

syntax error in expression
Expression: ()[1/s]
Sub Expression: ()[1/s]
Position 1

rgds


Anup
Hi Ivar please help to write the above equation Y=X0*(1+sin*(w*t)) where w=2*pi*f (rad/s), t=argument(s) I have tried with analytical function after defining w in variables and all other constants in parameters. when I tried to plot it shows following errors: syntax error in expression Expression: ()[1/s] Sub Expression: ()[1/s] Position 1 rgds Anup

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