- remove all (i) parts
- try vpasolve (numerical solver) insteaf of solve (symbolical solver). Your equations can be too complicated for symbolical solver
How to solve 2 equations with 2 unknowns and for Loop
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Hi
I have two equations with 2 unknowns K_23 and nu_12.
And I would like to solve these equations but for different V_f(i) value for each i
Thanks
lambda_0=7.0246;
mu_0=1.3380;
nu_0=0.42;
A_3=-3.0399;
A_4=1.0302;
A=-0.8873;
E_11=53.3299;
E_22=5.3694;
G_23=1.5959;
syms K_23 nu_12
for i =1:1:200
V_f(i)=i*0.005;
eq1(i)= K_23(i)== (lambda_0+mu_0)*((1+nu_0)*(1-2*nu_0))/ ...
( 1-nu_0*(1+2*nu_12(i))+V_f(i)*(2*(nu_12(i)-nu_0)*A_3(i)+(1-nu_0*(1+2*nu_12(i)))*A_4(i))/A(i));
eq2(i)= nu_12(i)^2== ((E_11(i)/E_22(i))-(E_11(i)/4)*((1/mu_23(i))+(1/K_23(i))));
sol(i)=solve(eq1(i),eq2(i))
K23value(i)=double(sol.K_23(i))
nu12value(i)=double(sol.nu_12(i))
end
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