Matlab积分Mindlin解我在用Matlab二重积分Mindlin解的时候,出现无法计算的问题.syms a c;for i=1:nfor j=1:n z=d1*i-d1/2;R1=sqrt((d*cos(a))^2+(z-c)^2);R2=sqrt((d*cos(a))^2+(z+c)^2); A=(1+u)/(8*pi*(1-u))*((3-4*u)/R1+(z-c)^2/R1^3+(8*u^2
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![Matlab积分Mindlin解我在用Matlab二重积分Mindlin解的时候,出现无法计算的问题.syms a c;for i=1:nfor j=1:n z=d1*i-d1/2;R1=sqrt((d*cos(a))^2+(z-c)^2);R2=sqrt((d*cos(a))^2+(z+c)^2); A=(1+u)/(8*pi*(1-u))*((3-4*u)/R1+(z-c)^2/R1^3+(8*u^2](/uploads/image/z/9353250-18-0.jpg?t=Matlab%E7%A7%AF%E5%88%86Mindlin%E8%A7%A3%E6%88%91%E5%9C%A8%E7%94%A8Matlab%E4%BA%8C%E9%87%8D%E7%A7%AF%E5%88%86Mindlin%E8%A7%A3%E7%9A%84%E6%97%B6%E5%80%99%2C%E5%87%BA%E7%8E%B0%E6%97%A0%E6%B3%95%E8%AE%A1%E7%AE%97%E7%9A%84%E9%97%AE%E9%A2%98.syms+a+c%3Bfor+i%3D1%3Anfor+j%3D1%3An+z%3Dd1%2Ai-d1%2F2%3BR1%3Dsqrt%28%28d%2Acos%28a%29%29%5E2%2B%28z-c%29%5E2%29%3BR2%3Dsqrt%28%28d%2Acos%28a%29%29%5E2%2B%28z%2Bc%29%5E2%29%3B+A%3D%281%2Bu%29%2F%288%2Api%2A%281-u%29%29%2A%28%283-4%2Au%29%2FR1%2B%28z-c%29%5E2%2FR1%5E3%2B%288%2Au%5E2)
Matlab积分Mindlin解我在用Matlab二重积分Mindlin解的时候,出现无法计算的问题.syms a c;for i=1:nfor j=1:n z=d1*i-d1/2;R1=sqrt((d*cos(a))^2+(z-c)^2);R2=sqrt((d*cos(a))^2+(z+c)^2); A=(1+u)/(8*pi*(1-u))*((3-4*u)/R1+(z-c)^2/R1^3+(8*u^2
Matlab积分Mindlin解
我在用Matlab二重积分Mindlin解的时候,出现无法计算的问题.
syms a c;
for i=1:n
for j=1:n
z=d1*i-d1/2;
R1=sqrt((d*cos(a))^2+(z-c)^2);
R2=sqrt((d*cos(a))^2+(z+c)^2);
A=(1+u)/(8*pi*(1-u))*((3-4*u)/R1+(z-c)^2/R1^3+(8*u^2-12*u+5)/R2+((3-4*u)*(z+c)^2-2*c*z)/R2^3+6*c*z*(z+c)^2/R2^5);
I1(i,j)=2*int(int(A,c,(j-1)*d1,j*d1),a,0,pi/2);
end
end
其中n,d1,d,u都是可以给出的,但是为什么二重积分没办法计算呢?
Matlab积分Mindlin解我在用Matlab二重积分Mindlin解的时候,出现无法计算的问题.syms a c;for i=1:nfor j=1:n z=d1*i-d1/2;R1=sqrt((d*cos(a))^2+(z-c)^2);R2=sqrt((d*cos(a))^2+(z+c)^2); A=(1+u)/(8*pi*(1-u))*((3-4*u)/R1+(z-c)^2/R1^3+(8*u^2
反正你这个题目中有几个变量没赋值,这样是算不出的.
程序没问题,如果有错就是因为积分不收敛.