response to forced 2DOF system

castwerks

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Joined
Feb 12, 2009
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I have a harmonically forced 2 degree of freedom system that I am trying to find the steady state responses to. I have determined the two equations of motions and found the [m], [k], [c], and {f} matrixes.

However when i try to use eigen analysis ( q=phi'*[m]*phi ) I am unable to uncouple the two equation of motion to allow me to solve the system as two independ. single degree of freedom systems.

I believe I have correctly set up the EOMs... what other methods can I use to solve for the x and y steady state responses.

PS i am using matlab.
 
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