Extract stiffness matrix finite element matlab - MATLAB爱好者论坛-LabFans.com

poster · 2019-11-26, 21:01

I've read MatLab documentatin on how to assemble the stiffness matrix for the finite element approach.
The sintax is

[K,M,F] = assema(p,t,c,a,f) #assembles the matrices from the mesh data in p and t
Here c,a,f are just the cofficients like 0 or 1 and are not of interesent for the purpose of the question.

In this example, p and t are already computed by the command initmesh.

My question is the following: I have a triangulation that has been given to me from an other people, so I already have p and t, and I want to run the assema command. The format is the same of the one of matlab, but I don't understand why it doesn't work. Maybe because it's not generated by the command initmesh ?

2019-11-26, 21:01	#1
poster 高级会员注册日期: 2019-11-21 帖子: 3,006 声望力: 66	Extract stiffness matrix finite element matlab I've read MatLab documentatin on how to assemble the stiffness matrix for the finite element approach. The sintax is `[K,M,F] = assema(p,t,c,a,f) #assembles the matrices from the mesh data in p and t` Here `c,a,f` are just the cofficients like 0 or 1 and are not of interesent for the purpose of the question. In this example, `p` and `t` are already computed by the command `initmesh`. My question is the following: I have a triangulation that has been given to me from an other people, so I already have `p` and `t`, and I want to run the `assema` command. The format is the same of the one of matlab, but I don't understand why it doesn't work. Maybe because it's not generated by the command `initmesh` ? More answer...