23000064940 *} } [ < € ] {* } + [ ^** + m₂ + m₂ m₂ m₂ m₁ =1kg m₂ = 2kg k₁ = k₁= k₂ = 1¾ 2₁ Determine (analytically do not use Matlab): 1) The characteristic equation 2) The natural frequencies 3) The mode shapes normalized to the largest value = 1.0 4) Sketch the mode shapes 6) Determine the solutions [10] X₂0 Wis using the modal method. 7) Plot your results using MatLab. 5) Show the mode shapes are orthogonal with respect to the mass matrix x₂ (1) and x₂ (1) for -.7207 rad/s ₁₂ Wn₂ = .1.7552 rad/s 1.0 -0.1754) 11 = 1 [(k₂ + 4k₂ + k₂) −4k₂ 11 -4k₂ 2 = nm 30-4 [0.701 1.0 x₁ (t) = 7.1664 sin(.7207t-.00719)+8.7643 sin 1.1552t+2.9678) x₂ (t)=10.2149 sin(.7207t-.00719)-1.5372 sin 1.1552t +2.9678) {*}={100mm/sec M(t) M(t) R

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Matlab

(3000*30*
[(k₂ + 4k₂ + k₂) -4k₂ x₂
{*} + [ ² ]{*} [^^ +
m₂
m₁+·
m₂
2
2
2
m₂
m₂
m₁ = 1kg m₂ = 2kg k₁=k₂ = k₁ = 1%/m
11
Determine (analytically do not use MatLab):
1) The characteristic equation
2) The natural frequencies
3) The mode shapes normalized to the largest value =1.0
4) Sketch the mode shapes
6) Determine the solutions
5) Show the mode shapes are orthogonal with respect to the mass matrix
x₂ (t) and x₂ (1) for
10
X20
using the modal method.
7) Plot your results using MatLab.
W = .7207 rad/s Wn₂ =.1.7552 rad/s
= {0.700)
11 =
-4k₂
1.0
-0.1754)
mm
4k₂
10
10]
10
mm/sec
x₁ (t) = 7.1664 sin(.7207t—.00719)+8.7643 sin 1.1552t +2.9678)
x₂ (t)=10.2149 sin(.7207t-.00719)-1.5372 sin 1.1552t+2.9678)
M(t)
R
M(t)
R
Transcribed Image Text:(3000*30* [(k₂ + 4k₂ + k₂) -4k₂ x₂ {*} + [ ² ]{*} [^^ + m₂ m₁+· m₂ 2 2 2 m₂ m₂ m₁ = 1kg m₂ = 2kg k₁=k₂ = k₁ = 1%/m 11 Determine (analytically do not use MatLab): 1) The characteristic equation 2) The natural frequencies 3) The mode shapes normalized to the largest value =1.0 4) Sketch the mode shapes 6) Determine the solutions 5) Show the mode shapes are orthogonal with respect to the mass matrix x₂ (t) and x₂ (1) for 10 X20 using the modal method. 7) Plot your results using MatLab. W = .7207 rad/s Wn₂ =.1.7552 rad/s = {0.700) 11 = -4k₂ 1.0 -0.1754) mm 4k₂ 10 10] 10 mm/sec x₁ (t) = 7.1664 sin(.7207t—.00719)+8.7643 sin 1.1552t +2.9678) x₂ (t)=10.2149 sin(.7207t-.00719)-1.5372 sin 1.1552t+2.9678) M(t) R M(t) R
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