k=1; %100应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f；

solve('f=0','x')

clear

k=10; %101应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f

solve('f=0','x')

clear

k=100; %102应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f

solve('=0','x')

clear

k=1000; %103应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f

solve('=0','x')

clear

k=10000; %104应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f

solve('=0','x')

f

solve('f=0','x')

clear

k=100; %102应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f

solve('=0','x')

clear

k=1000; %103应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f

solve('=0','x')

clear

k=10000; %104应变率下的单轴拉压值

syms x;

y=0;z=0;

f=((x-y).^2+(x-z).^2+(y-z).^2)/(6*20086.16)+(x+y+z)/92.4-(1+0.14*k)/105.36;

f

solve('=0','x')