FEM: Meshing with triangles a plate (thin shell)
FEM: Meshing with triangles a plate (thin shell)
(OP)
Hello,
When the mesh of any part is done using plates (thin shell), is there any problem of meshing the plates using triangles?
I have done some calculations getting higher Von Mises stress when the mesh is done with triangles than if it is done using squares?
I would like to know if the Von Mises stress obtained when triangles have been used in the mesh are real or are values too conservatives.
Thanks in advance,
Esteban
When the mesh of any part is done using plates (thin shell), is there any problem of meshing the plates using triangles?
I have done some calculations getting higher Von Mises stress when the mesh is done with triangles than if it is done using squares?
I would like to know if the Von Mises stress obtained when triangles have been used in the mesh are real or are values too conservatives.
Thanks in advance,
Esteban





RE: FEM: Meshing with triangles a plate (thin shell)
Using triangles ( I assume you use linear elements) would typical give a conservative value. These elements have a constant strain element formulation and are stiffer than a four-node ectangular element, and hence they should be avoided.
I might not be able to explain this but any textbook should clearify it.
T.
RE: FEM: Meshing with triangles a plate (thin shell)
Tobbe is correct in that first-order triangles should be avoided in favor of quadrilateral elements when possible.
Brad