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How can i solve this system ?

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Mallouli Marwa
Mallouli Marwa 2017-1-25
评论： Mallouli Marwa 2017-1-27
Hi
To determine the damping ratio (psij and psik ), i have to solve the attached system where all other name
are constant.
How can i solve this system ?
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Mallouli Marwa
Mallouli Marwa 2017-1-26
I want to solve it numerically.

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Torsten
Torsten 2017-1-26
A = 2*omegaj*omegak/(omegaj^2-omegak^2)*[Y*I/omegak -Y*I/omegaj ; -m*omegak m*omegaj];
b = [cs*I ; ca];
zeta = A\b;
zetaj = zeta(1);
zetak = zeta(2);
Best wishes
Torsten.
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Torsten
Torsten 2017-1-27
编辑：Torsten 2017-1-27
If abs(wr(i))=abs(wr(k)), your matrix A becomes singular and you won't get a solution.
This will at least be the case if i=k in your nested-loop construction.
Best wishes
Torsten.
Mallouli Marwa
Mallouli Marwa 2017-1-27
Please how can i correct this error ?

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Torsten
Torsten 2017-1-26
Hint:
The inverse of
[a b ; c d]
is
1/(a*d-b*c)*[d -b; -c a]
Best wishes
Torsten.

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