필터 지우기
필터 지우기

Integration of elements of a matrix

조회 수: 10 (최근 30일)
ABG
ABG 2022년 11월 2일
편집: Torsten 2022년 11월 2일
Hi guys!
I am trying to integrate each element of a matrix, but I can not obtain the correct integral.
syms x x1 x2 x3 x4 x5 x6 F3w F4w F5w F3p F4p F5p
L2=60000;
L1=40000;
SECOND TRUSS
C1=[1 x3 x3.^2; 1 x4 x4.^2; 1 x5 x5.^2]
C1_=inv(C1)
N1=[1 x x^2]*C1_
u1=(simplify(N1))
pretty(u1)
B1=diff(u1,x)
pretty(B1)
E=30E3
A=pi*(3500^2-3000^2)
K1=B1'*A*E*B1*L2
pretty(K1)
x3=40000;
x4=70000;
x5=100000;
K1p=eval(K1)
fun = @(x) K1p;
K1pp=integral(fun,40000,100000)
In this case, matrix K1pp must be the integral value between 40000 and 100000 from matrix K1, which has been previously calculated. I have tried in many ways, but none of them have worked.
I don't know if you could help me.
Thanks!

답변 (1개)

Torsten
Torsten 2022년 11월 2일
편집: Torsten 2022년 11월 2일
syms x x1 x2 x3 x4 x5 x6 F3w F4w F5w F3p F4p F5p
assume([x x1 x2 x3 x4 x5 x6 F3w F4w F5w F3p F4p F5p],'real')
L2=60000;
L1=40000;
%SECOND TRUSS
C1=[1 x3 x3.^2; 1 x4 x4.^2; 1 x5 x5.^2];
C1_=inv(C1);
N1=[1 x x^2]*C1_;
u1=(simplify(N1));
%pretty(u1);
B1=diff(u1,x);
%pretty(B1);
E=30E3;
A=pi*(3500^2-3000^2);
K1=B1'*A*E*B1*L2;
%pretty(K1);
x3=40000;
x4=70000;
x5=100000;
K1p=eval(K1);
%fun = @(x) K1p;
fun = matlabFunction(K1p);
K1pp=integral(fun,40000,100000,'ArrayValued',1)
K1pp = 3×3
1.0e+12 * 0.7147 -0.8168 0.1021 -0.8168 1.6336 -0.8168 0.1021 -0.8168 0.7147

카테고리

Help CenterFile Exchange에서 Structural Analysis에 대해 자세히 알아보기

태그

제품


릴리스

R2022b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by