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Comsol Transient Vibration Analysis

  1. Jun 1, 2009 #1
    hi all..
    How can i describe initial conditions or initial forces in comsol(like wave forms such as ramp or parabolic)? I couldnt find it in the manual.
    in ansys, i do it in time steps(in solution options).(like t=0, F=10 t=0.001 F=0)
    I tried to give initial displacements to the points but it didnt work,either.. It gave ridiculous results..like damped oscillations when there was no damping..
    thank you for help..
     
  2. jcsd
  3. Jun 1, 2009 #2
    I defined a function for the force input (at the options menu).. i thought it worked.. but still the output waveform is not correct(not a full sinusoid.. a more like saw signal.. and although there is no damping, its a damped signal..) help : \
     
    Last edited: Jun 1, 2009
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