Solve an equation while we have an if statement that makes the coefficient depends on the variable
5 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
I want to solve this
M=166700; %kg%;
g=9.81; %m/s2%;
ro=2500; %kg/m3%;
H=6; %m%;
sigmac=20*(10^6); %Pa%
syms d;
if(d<0.8)
F2=3*(10^6)*(d^2)-30644;
M1=5*(10^7)*(d^2)-552844;
else
F2=103867*(d^2)+(10^6);
M1=2*(10^6)*d^2+2*(10^7);
end
F1=17759*(d^2)+1801.8;
m=sigmac-(M*g/(d^2))-2*ro*H*g+(6*H*F1/(2*(d^3)))+(6*H*F2/(d^3))+(M1*6/(d^3));
fsolve(m,d)
I am not getting an answer because the if test cannot be done without a value for d. Value that I aim to find by this code
1 Commento
Risposte (1)
Walter Roberson
il 28 Mag 2022
typically the best way to solve these situations is to run both branches separately, vpasolve() each of the branches, test each result to see if it is within the constraints for the branch. There might be several answers.
0 Commenti
Vedere anche
Categorie
Scopri di più su Statics and Dynamics in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!