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a1=0;a2=0;b1=1; syms('r') i=1; for j=0:pi/8:pi/2 theta(i)=j; sigmaxx(i)=0.5*a1*r^(-0.5)*(1.5*cos(0.5*theta(i))+0.5*cos(2.5*theta(i)))+0.5*b1*r^(-0.5)*(3.5*sin(0.5*theta(i))+0.5*sin(2.5*theta(i)))+a2*4; sigmayy(i)=0.5*a1*r^(-0.5)*(2.5*cos(0.5*theta(i))-0.5*cos(2.5*theta(i)))+0.5*b1*r^(-0.5)*(0.5*sin(0.5*theta(i))-0.5*sin(2.5*theta(i))); sigmaxy(i)=0.5*a1*r^(-0.5)*(-0.5*sin(0.5*theta(i))+0.5*sin(2.5*theta(i)))+0.5*b1*r^(-0.5)*(1.5*cos(0.5*theta(i))+0.5*cos(2.5*theta(i))); sigma1(i)=0.5*(sigmaxx(i)+sigmayy(i))+sqrt((0.5*(sigmaxx(i)-sigmayy(i)))^2+sigmaxy(i)*sigmaxy(i)); sigma2(i)=0.5*(sigmaxx(i)+sigmayy(i))-sqrt((0.5*(sigmaxx(i)-sigmayy(i)))^2+sigmaxy(i)*sigmaxy(i)); sigma3(i)=0.3*(sigma1(i)+sigma2(i)); z(i)=(sigma1(i)-sigma2(i))^2+(sigma2(i)-sigma3(i))^2+(sigma3(i)-sigma1(i))^2-2*26*26; p(i)=solve('z(i)','r') i=i+1; end ÏÔʾ£º Warning: Explicit solution could not be found. > In solve at 140 ??? Subscripted assignment dimension mismatch. >> |
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