MODE 1

1.0

0.919

0.764

0.547

0.286

9

JETRO G. SARAJENASTE 224- STRUCTURAL DYNAMICS

-0.831 -1 -1 -0.831

-1-0.831

-1.831

-1-0.831 -1

-1-1-1

0 0 0 0 0

0 0 0 0 0 0 0

=

θθθθθ

4142434445

00000

With same procedure in computing the First Mode we have,

=θ4

1.685 1.400. 0.522-1.831 1.0

Fourth Mode,

using λ =1.715, we have-1.862 -1 -1 -1.682

-1-1.682

-2.682

-1-1.682 -1

-1-1-1

0 0 0 0 0

0 0 0 0 0 0 0

=

θθθθθ

5152535455

00000

Solve for the Fifth Mode:[k-ω²m]θ =05

With same procedure in computing the First Mode we have,

=θ5

1.910-3.322 3.510-2.682 1.0

Fifth Mode,