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标题:
无阻尼二自由系统固有频率的程序
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作者:
shouce
时间:
2018-4-16 19:41
标题:
无阻尼二自由系统固有频率的程序
% 无阻尼二自由系统固有频率的程序 20180401A
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m1=100;m2=100;k1=200;k2=400;%
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c1=0;c2=0;
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x0=[1;0];xd0=[0;0];tf=50;dt=0.1;
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M=[m1,0;0,m2];k=[k1+k2,-k2;-k2,k2];
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c=[c1+c2,-c2;-c2,c2];
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A=[zeros(2,2),eye(2);-M\k,-M\c];
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y0=[x0;xd0];
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for i=1:round(tf/dt)+1
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t(i)=dt*(i-1)
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y(:,i)=expm(A*t(i))*y0;
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end
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subplot(2,1,1),plot(t,y(1,
),grid
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subplot(2,1,2),plot(t,y(2,
),grid
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[p,lamda]=eig(A)
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lamda =
% x- M8 X* N3 S, Y# I
Columns 1 through 2
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0.000000000000000 + 3.020447918044219i 0.000000000000000 + 0.000000000000000i
( b) ]: b/ H9 h4 |6 |1 A, k- [
0.000000000000000 + 0.000000000000000i 0.000000000000000 - 3.020447918044219i
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0.000000000000000 + 0.000000000000000i 0.000000000000000 + 0.000000000000000i
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0.000000000000000 + 0.000000000000000i 0.000000000000000 + 0.000000000000000i
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Columns 3 through 4
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0.000000000000000 + 0.000000000000000i 0.000000000000000 + 0.000000000000000i
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0.000000000000000 + 0.000000000000000i 0.000000000000000 + 0.000000000000000i
/ v5 g- X( B2 E
-0.000000000000000 + 0.936426384924271i 0.000000000000000 + 0.000000000000000i
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0.000000000000000 + 0.000000000000000i -0.000000000000000 - 0.936426384924271i
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作者:
鸿鹄重工
时间:
2019-4-26 09:38
代码中有个笑脸是啥意思，此处应该是什么代码？
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),grid 0 n8 U8 q# i9 n),grid