Need help solving a pde with finite elements in matlab - MATLAB爱好者论坛-LabFans.com

poster · 2019-11-25, 03:06

I have an initial value problem u''''=f

with u(0)=u'(0)=u(1)=u'(1)=0

It comes then by multiplying with test function v and integrating to following formulation:

integral( 0 to 1) u''v'' dx= integral (o to 1) fv

So the basis function are polynomials of degree 3
And those polynomials can be solved exact with the simpson rule.

So I want to write some code to get the stiffness matrix for this..

I find it very hard to start with ..I don't have much experience in Matlab and would kindly ask you to help getting me started.

looking forward for any help!

2019-11-25, 03:06	#1
poster 高级会员注册日期: 2019-11-21 帖子: 3,006 声望力: 66	Need help solving a pde with finite elements in matlab I have an initial value problem u''''=f with u(0)=u'(0)=u(1)=u'(1)=0 It comes then by multiplying with test function v and integrating to following formulation: integral( 0 to 1) u''v'' dx= integral (o to 1) fv So the basis function are polynomials of degree 3 And those polynomials can be solved exact with the simpson rule. So I want to write some code to get the stiffness matrix for this.. I find it very hard to start with ..I don't have much experience in Matlab and would kindly ask you to help getting me started. looking forward for any help! More answer...