Question 13.P.1: Using Rayleigh Ritz method and the following Ritz shapes obt...

Dynamics of Structures

Using Rayleigh Ritz method and the following Ritz shapes obtain estimates of 2 frequencies and the associated mode shapes of the four-story frame shown in Figure 11.14.

$\Psi =\left[\begin{array}{rr}0.5 & 0.5 \\1.0 & 1.0 \\1.5 & -0.1 \\2.0 & -1.5\end{array}\right]$

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