PROBLEM2:The displacement amplitude u, of an SDF system due to harmonic force is known for two excitationfrequencies. At w=wn, up = 15 cm; at w=5w, u, = 0.06 cm. Estimate the damping ratio of the system.@=PROBLEM3:Find the response of the rigid bar shown in Figure 2 when the end P of the spring PQ is subjected to thedisplacement, x(t) = xoSin10t. Data: k 500, 1 = 1 m, m = 10 kg, xo = 1 cm.N=m00000Uniform bar,mass m-Li+Figure 2-Rigid bar undergoing rotational motion

displacement amplitude u0 or (X0) = 15 cm and u1 or (X1) = 0.06 cmAt frequency at w = wn and w =…

Answered: The displacement amplitude u, of an SDF…

The displacement amplitude u, of an SDF system due to harmonic force is known for two excitation frequencies. At w=w, u₁= 15 cm; at w=5wn, up = 0.06 cm. Estimate the damping ratio of the system.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

PROBLEM2:
The displacement amplitude u, of an SDF system due to harmonic force is known for two excitation
frequencies. At w=wn, up = 15 cm; at w=5w, u, = 0.06 cm. Estimate the damping ratio of the system.
@=
PROBLEM3:
Find the response of the rigid bar shown in Figure 2 when the end P of the spring PQ is subjected to the
displacement, x(t) = xoSin10t. Data: k 500, 1 = 1 m, m = 10 kg, xo = 1 cm.
N
=
m
00000
Uniform bar,
mass m
-
Li+
Figure 2-Rigid bar undergoing rotational motion

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