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竿竿儿

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[求助] Attempted to access (10.5185); index must be a positive integer or logical. 已有1人参与

如题，是我运行matlab时出现的错误，我并没有用矩阵，只是进行的简单运算。10.5185是x11的值。
程序如下：
a1=2;
m1=1;m2=1;m3=1;m4=1;
b=1.2;
A_fy=0.392;
beta0_23=0.2858;
beta1_23=1.667;
beta0_14=0.01958;
beta1_14=1.113;
beta0_13=0.0765;
beta1_13=0.2664;
Cfy_23=-0.00130;
Cfy_14=0.00497;
Cfy_13=0.00127;
pusy_134=0.0014;
theta_34=0.02;
I=0.5*(m1+4*m2+m3+4*m4);
x12=6*1*2*A_fy*I^0.5;
x11=6*1*1*A_fy*I^0.5;
x22=6*2*2*A_fy*I^0.5;
x34=6*(-1)*(-2)*A_fy*I^0.5;
x33=6*(-1)*(-1)*A_fy*I^0.5;
x44=6*(-2)*(-2)*A_fy*I^0.5;
Z=2*m2+m1;
f_r=-A_fy*(I^0.5/(1+b*I^0.5)+2*log(1+b*I^0.5)/b);
g1=2*(a1*I^0.5)^(-2)*(1-(1+a1*I^0.5)*exp(-a1*I^0.5));
dg1=-2*(a1*I^0.5)^(-2)*(1-(1+a1*I^0.5+0.5*(a1*I^0.5)^2)*exp(-a1*I^0.5));
B_23=2*beta0_23+beta1_23*g1;
B_14=2*beta0_14+beta1_14*g1;
B_13=2*beta0_13+beta1_13*g1;
C_23=Cfy_23/(2*2^0.5);
C_14=Cfy_14/(2*2^0.5);
C_13=Cfy_13/(2*2^0.5);
dB_23=beta1_23*dg1/I;
dB_14=beta1_14*dg1/I;
dB_13=beta1_13*dg1/I;
y1=m3*(B_23+Z*C_23+theta_34);
y2=m1*(B_14+Z*C_14);
y3=m2*m3*(4*dB_23+2*C_23);
y4=m1*m3*(4*dB_13+2*C_13);
y5=m1*m4*(4*dB_14+0.5*(4*C_14+pusy_134));
J(x12)=x12*(4+4.581*x12^(-0.7237)*exp(-0.012*x12^0.528))^(-1);
J(x11)=x11*(4+4.581*x11^(-0.7237)*exp(-0.012*x11^0.528))^(-1);
J(x22)=x22*(4+4.581*x22^(-0.7237)*exp(-0.012*x22^0.528))^(-1);
J(x34)=x34*(4+4.581*x34^(-0.7237)*exp(-0.012*x34^0.528))^(-1);
J(x33)=x33*(4+4.581*x33^(-0.7237)*exp(-0.012*x33^0.528))^(-1);
J(x44)=x44*(4+4.581*x44^(-0.7237)*exp(-0.012*x44^0.528))^(-1);
Etheta_12=(2/(4*I))*(J(x12)-J(x11)/2-J(x22)/2);
Etheta_34=(2/(4*I))*(J(x34)-J(x33)/2-J(x44)/2);
dJ(x12)=(4+4.581*x12^(-0.7237)*exp(-0.012*x12^0.528))^(-1)+(4+4.581*x12^(-0.7237)*exp(-0.012*x12^0.528))^(-2)*(4.581*x12*exp(-0.012*x12^0.528)*(0.7237*x12^(-4.581-1)+0.012*0.528*x12^(0.528-1)*x12^(-0.7237)));
dJ(x11)=(4+4.581*x11^(-0.7237)*exp(-0.012*x11^0.528))^(-1)+(4+4.581*x11^(-0.7237)*exp(-0.012*x11^0.528))^(-2)*(4.581*x11*exp(-0.012*x11^0.528)*(0.7237*x11^(-4.581-1)+0.012*0.528*x11^(0.528-1)*x11^(-0.7237)));
dJ(x22)=(4+4.581*x22^(-0.7237)*exp(-0.012*x22^0.528))^(-1)+(4+4.581*x22^(-0.7237)*exp(-0.012*x22^0.528))^(-2)*(4.581*x22*exp(-0.012*x22^0.528)*(0.7237*x22^(-4.581-1)+0.012*0.528*x22^(0.528-1)*x22^(-0.7237)));
dJ(x34)=(4+4.581*x34^(-0.7237)*exp(-0.012*x34^0.528))^(-1)+(4+4.581*x34^(-0.7237)*exp(-0.012*x34^0.528))^(-2)*(4.581*x12*exp(-0.012*x34^0.528)*(0.7237*x34^(-4.581-1)+0.012*0.528*x34^(0.528-1)*x34^(-0.7237)));
dJ(x33)=(4+4.581*x33^(-0.7237)*exp(-0.012*x33^0.528))^(-1)+(4+4.581*x33^(-0.7237)*exp(-0.012*x33^0.528))^(-2)*(4.581*x12*exp(-0.012*x33^0.528)*(0.7237*x33^(-4.581-1)+0.012*0.528*x33^(0.528-1)*x33^(-0.7237)));
dJ(x44)=(4+4.581*x44^(-0.7237)*exp(-0.012*x44^0.528))^(-1)+(4+4.581*x44^(-0.7237)*exp(-0.012*x44^0.528))^(-2)*(4.581*x12*exp(-0.012*x44^0.528)*(0.7237*x44^(-4.581-1)+0.012*0.528*x44^(0.528-1)*x44^(-0.7237)));
dtheta_12=-(theta_12/I)+(2/(8*I^2))*(x12*dJ(x12)-x11*dJ(x11)/2-x22*dJ(x22)/2);
dtheta_34=-(theta_34/I)+(2/(8*I^2))*(x34*dJ(x34)-x33*dJ(x33)/2-x44*dJ(x44)/2);
y=4*f_r+y1+y2+y3+y4+y5+4*m2*m1*dtheta_12+4*m3*m4*dtheta_34;

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1楼 2014-05-05 16:06:48

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竿竿儿

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引用回帖:

2楼: Originally posted by notshuaige at 2014-05-05 16:16:44
已改好，楼主试试看

a1=2;
m1=1;m2=1;m3=1;m4=1;
b=1.2;
A_fy=0.392;
beta0_23=0.2858;
beta1_23=1.667;
beta0_14=0.01958;
beta1_14=1.113;
beta0_13=0.0765;
beta1_13=0.2664;
Cfy_23=-0.00130;
Cf ...

太感谢了，我不太懂矩阵。

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3楼2014-05-05 16:39:56

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notshuaige

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【答案】应助回帖

★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
竿竿儿: 金币+5, ★★★★★最佳答案 2014-05-05 16:39:34
xzhdty: 金币+1, 感谢参与应助 2014-05-06 07:22:40

已改好，楼主试试看

a1=2;
m1=1;m2=1;m3=1;m4=1;
b=1.2;
A_fy=0.392;
beta0_23=0.2858;
beta1_23=1.667;
beta0_14=0.01958;
beta1_14=1.113;
beta0_13=0.0765;
beta1_13=0.2664;
Cfy_23=-0.00130;
Cfy_14=0.00497;
Cfy_13=0.00127;
pusy_134=0.0014;
theta_34=0.02;
I=0.5*(m1+4*m2+m3+4*m4);
x12=6*1*2*A_fy*I^0.5;
x11=6*1*1*A_fy*I^0.5;
x22=6*2*2*A_fy*I^0.5;
x34=6*(-1)*(-2)*A_fy*I^0.5;
x33=6*(-1)*(-1)*A_fy*I^0.5;
x44=6*(-2)*(-2)*A_fy*I^0.5;
Z=2*m2+m1;
f_r=-A_fy*(I^0.5/(1+b*I^0.5)+2*log(1+b*I^0.5)/b);
g1=2*(a1*I^0.5)^(-2)*(1-(1+a1*I^0.5)*exp(-a1*I^0.5));
dg1=-2*(a1*I^0.5)^(-2)*(1-(1+a1*I^0.5+0.5*(a1*I^0.5)^2)*exp(-a1*I^0.5));
B_23=2*beta0_23+beta1_23*g1;
B_14=2*beta0_14+beta1_14*g1;
B_13=2*beta0_13+beta1_13*g1;
C_23=Cfy_23/(2*2^0.5);
C_14=Cfy_14/(2*2^0.5);
C_13=Cfy_13/(2*2^0.5);
dB_23=beta1_23*dg1/I;
dB_14=beta1_14*dg1/I;
dB_13=beta1_13*dg1/I;
y1=m3*(B_23+Z*C_23+theta_34);
y2=m1*(B_14+Z*C_14);
y3=m2*m3*(4*dB_23+2*C_23);
y4=m1*m3*(4*dB_13+2*C_13);
y5=m1*m4*(4*dB_14+0.5*(4*C_14+pusy_134));
J(1,2)=x12*(4+4.581*x12^(-0.7237)*exp(-0.012*x12^0.528))^(-1);
J(1,1)=x11*(4+4.581*x11^(-0.7237)*exp(-0.012*x11^0.528))^(-1);
J(2,2)=x22*(4+4.581*x22^(-0.7237)*exp(-0.012*x22^0.528))^(-1);
J(3,4)=x34*(4+4.581*x34^(-0.7237)*exp(-0.012*x34^0.528))^(-1);
J(3,3)=x33*(4+4.581*x33^(-0.7237)*exp(-0.012*x33^0.528))^(-1);
J(4,4)=x44*(4+4.581*x44^(-0.7237)*exp(-0.012*x44^0.528))^(-1);
Etheta_12=(2/(4*I))*(J(1,2)-J(1,1)/2-J(2,2)/2);
Etheta_34=(2/(4*I))*(J(3,4)-J(3,3)/2-J(4,4)/2);
dJ(1,2)=(4+4.581*x12^(-0.7237)*exp(-0.012*x12^0.528))^(-1)+(4+4.581*x12^(-0.7237)*exp(-0.012*x12^0.528))^(-2)*(4.581*x12*exp(-0.012*x12^0.528)*(0.7237*x12^(-4.581-1)+0.012*0.528*x12^(0.528-1)*x12^(-0.7237)));
dJ(1,1)=(4+4.581*x11^(-0.7237)*exp(-0.012*x11^0.528))^(-1)+(4+4.581*x11^(-0.7237)*exp(-0.012*x11^0.528))^(-2)*(4.581*x11*exp(-0.012*x11^0.528)*(0.7237*x11^(-4.581-1)+0.012*0.528*x11^(0.528-1)*x11^(-0.7237)));
dJ(2,2)=(4+4.581*x22^(-0.7237)*exp(-0.012*x22^0.528))^(-1)+(4+4.581*x22^(-0.7237)*exp(-0.012*x22^0.528))^(-2)*(4.581*x22*exp(-0.012*x22^0.528)*(0.7237*x22^(-4.581-1)+0.012*0.528*x22^(0.528-1)*x22^(-0.7237)));
dJ(3,4)=(4+4.581*x34^(-0.7237)*exp(-0.012*x34^0.528))^(-1)+(4+4.581*x34^(-0.7237)*exp(-0.012*x34^0.528))^(-2)*(4.581*x12*exp(-0.012*x34^0.528)*(0.7237*x34^(-4.581-1)+0.012*0.528*x34^(0.528-1)*x34^(-0.7237)));
dJ(3,3)=(4+4.581*x33^(-0.7237)*exp(-0.012*x33^0.528))^(-1)+(4+4.581*x33^(-0.7237)*exp(-0.012*x33^0.528))^(-2)*(4.581*x12*exp(-0.012*x33^0.528)*(0.7237*x33^(-4.581-1)+0.012*0.528*x33^(0.528-1)*x33^(-0.7237)));
dJ(4,4)=(4+4.581*x44^(-0.7237)*exp(-0.012*x44^0.528))^(-1)+(4+4.581*x44^(-0.7237)*exp(-0.012*x44^0.528))^(-2)*(4.581*x12*exp(-0.012*x44^0.528)*(0.7237*x44^(-4.581-1)+0.012*0.528*x44^(0.528-1)*x44^(-0.7237)));
dtheta_12=-(Etheta_12/I)+(2/(8*I^2))*(x12*dJ(1,2)-x11*dJ(1,1)/2-x22*dJ(2,2)/2);
dtheta_34=-(Etheta_34/I)+(2/(8*I^2))*(x34*dJ(3,4)-x33*dJ(3,3)/2-x44*dJ(4,4)/2);
y=4*f_r+y1+y2+y3+y4+y5+4*m2*m1*dtheta_12+4*m3*m4*dtheta_34;

话说感觉像是求亚可比矩阵……

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2楼2014-05-05 16:16:44

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