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ÎÒʹÓÃode45¼ÆËãÒ»¸ö¶þ½×΢·Ö·½³Ì
¼ÆËã³ÌÐòd1=0;d2=1;
[t,y]=ode45('equation',0:0.000001:0.000152,[d1,d2]);

µ÷Óú¯Êýfunction dy=equation(t,y)
E=2.07e11;
v=0.3;
r1=0.01;r2=0.0095;m=1;c=0.9;yy=-1;
t
dy=[y(2);%ÕâÀïÊÇyµÄÒ»½×µ¼
    -(4*E/(3*2*(1-v^2))*(r2*r1/(r1-r2))^0.5*y(1)^1.5)/m;];
end

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