how do divide like this picture by code matlab?

2024 12 18
1 个回答
更新时间：2024 12 26
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回答（1 个）

Sam Chak
Sam Chak 2024-12-18
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Hi @Vuong
If this is a topic of Finite Element Analysis, then look up generateMesh() and pdemesh().
gm = fegeometry(@lshapeg);
gm = generateMesh(gm);
pdemesh(gm)

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Vuong
Vuong 2024-12-18
Thanks. But this is tri element not quad element
Vuong
Vuong 2024-12-20
unstructured quadrilateral grid generation
Sam Chak
Sam Chak 2024-12-23
Ran in:
Ran in:
Hi @Vuong
Another option is to use the FEATool Multiphysics toolbox. A license is required for purchase, but discounted academic pricing is available for accredited degree-granting institutions.
Alternatively, you may consider creating your own quadrilateral meshes using various techniques at your disposal. One approach is to utilize Delaunay triangulation; as you may know, if two triangles share a common side and their other vertices are not collinear, the combined figure forms a quadrilateral.
The rest is to find a MATLAB clever way to "remove" the display of the shared common sides.
P = rand([5 2]);
DT = delaunayTriangulation(P)
DT =
delaunayTriangulation with properties: Points: [5x2 double] ConnectivityList: [4x3 double] Constraints: []
IC = incenter(DT);
triplot(DT)
hold on
plot(IC(:,1), IC(:,2), '*r'), grid on
●
Sam Chak
Sam Chak 2024-12-23
Hi @Vuong
You can possibly get some inspirations and ideas from this working example:
https://www.mathworks.com/help/matlab/math/delaunay-triangulation.html
Vuong
Vuong 2024-12-26
编辑：Vuong 2024-12-26
I want to divide area base unstructured quadrilateral mesh by codes matlab not addins or app. Quadrilateral not triangles. Like this figure toppic

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Vuong
Vuong
2024-12-18

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Vuong
Vuong
2024-12-26

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