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## question matrix  6-Contributor

## question matrix

hai all

hwo to get the solution of the d , from the equation (k-w^2*m)*Phi 6 REPLIES 6  23-Emerald III
(To:mostafaelhodiry)

This does not make sense.

The variable 'd' is not in the equation you provide, so you cannot solve for it.

Note that 'find' can only be used in a 'solve block', and a solve block cannot be used in a program.

Where is the worksheet?

What exactly are you trying to achieve?

Luc  21-Topaz I
(To:mostafaelhodiry)

Hi

(k-w^2*m)*Phi

Can be expressed as k*Phi=w^2*m*Phi

You can resolve w^2=genvals(k,m).  So w is simply the element by element square root of genvals(k.m).

You can resolve the modes as modes=genvecs(k,m).

Regards

Terry  6-Contributor
(To:terryhendicott)

kindly how to get the values of phi (eign values ) like as shown in figure below   21-Topaz I
(To:mostafaelhodiry)

Hi,

You can resolve w^2=genvals(k,m).  So w is simply the element by element square root of genvals(k.m).

You can resolve phi as phi=genvecs(k,m).  Each column of phi is a mode shapes.

Regards

Terry  6-Contributor
(To:terryhendicott)

THANKS FOR HELPING ME
IT IS WORKING NOW
THANKS  24-Ruby V
(To:mostafaelhodiry)

@mostafaelhodiry wrote:

kindly how to get the values of phi (eign values ) like as shown in figure below

Just type in what terry had already written a few times. There is no more to it!

Here is an example with the values you provided in a file you attached in another post:  Announcements