guyoupinlv.rar_absorber_shock absorber_减振_固有频率_隔振器

m=323.98; Jx=25.706;Jy=13.607;Jz=23.014;Jxy=-3.029;Jyz=3.359;Jzx=-0.876; Xz=72.44;Yz=-431.92;Zz=148.82; Xy=4.34;Yy=452.98;Zy=250.22; Xh=199.64;Yh=-7.72;Zh=-245.93; Kzx=380e3*1.5;Kzy=72e3*1.5;Kzz=220e3*1.5; Kyx=380e3*1.5;Kyy=72e3*1.5;Kyz=220e3*1.5; Khx=213e3*1.5;Khy=10e3*1.5;Khz=10e3*1.5; ALFAzu=0;BETAzu=90*pi/180;GAMAzu=90*pi/180; ALFAzv=90*pi/180;BETAzv=0;GAMAzv=90*pi/180; ALFAzw=90*pi/180;BETAzw=90*pi/180;GAMAzw=0; ALFAyu=0;BETAyu=90*pi/180;GAMAyu=90*pi/180; ALFAyv=90*pi/180;BETAyv=0;GAMAyv=90*pi/180; ALFAyw=90*pi/180;BETAyw=90*pi/180;GAMAyw=0; ALFAhu=8*pi/180;BETAhu=90*pi/180;GAMAhu=82*pi/180; ALFAhv=90*pi/180;BETAhv=0;GAMAhv=90*pi/180; ALFAhw=98*pi/180;BETAhw=90*pi/180;GAMAhw=8*pi/180; Th=[cos(ALFAhu),cos(BETAhu),cos(GAMAhu);cos(ALFAhv),cos(BETAhv),cos(GAMAhv);cos(ALFAhw),cos(BETAhw),cos(GAMAhw)]; Tz=[cos(ALFAzu),cos(BETAzu),cos(GAMAzu);cos(ALFAzv),cos(BETAzv),cos(GAMAzv);cos(ALFAzw),cos(BETAzw),cos(GAMAzw)]; Ty=[cos(ALFAyu),cos(BETAyu),cos(GAMAyu);cos(ALFAyv),cos(BETAyv),cos(GAMAyv);cos(ALFAyw),cos(BETAyw),cos(GAMAyw)]; Fh=[1e3,0,0,0,Zh,-Yh;0,1e3,0,-Zh,0,Xh;0,0,1e3,Yh,-Xh,0]*0.001; Fz=[1e3,0,0,0,Zz,-Yz;0,1e3,0,-Zz,0,Xz;0,0,1e3,Yz,-Xz,0]*0.001; Fy=[1e3,0,0,0,Zy,-Yy;0,1e3,0,-Zy,0,Xy;0,0,1e3,Yy,-Xy,0]*0.001; kh=[Khx,0,0;0,Khy,0;0,0,Khz]; kz=[Kzx,0,0;0,Kzy,0;0,0,Kzz]; ky=[Kyx,0,0;0,Kyy,0;0,0,Kyz]; M=[m,0,0,0,0,0;0,m,0,0,0,0;0,0,m,0,0,0;0,0,0,Jx,-Jxy,-Jzx;0,0,0,-Jxy,Jy,-Jyz;0,0,0,-Jzx,-Jyz,Jz]; % D=[1200,0,0,0,0,0;0,1600,0,0,0,0;0,0,2000,0,0,0;0,0,0,60,0,0;0,0,0,0,80,0;0,0,0,0,0,100]; K=Fh'*Th'*kh*Th*Fh+Fz'*Tz'*kz*Tz*Fz+Fy'*Ty'*ky*Ty*Fy; [v,d]=eig(K,M); f=diag(sqrt(d)/2/pi)' for j=1:6 for k=1:6 for l=1:6 ENERGY(k,l)=M(k,l)*v(k,j)*v(l,j); end end qq=sum(ENERGY); qqt=sum(qq); dig=[qq/qqt]; EGEN(:,j)=dig; ep1=max(dig); ep2=sum(dig); eper(j)=ep1/ep2*100; end eper EGEN=EGEN*100