Hi,
I am trying to calculate the stress due to a point load in 3D block geometry. When I am using a mapped option mesh, no matter which size of mesh that I choose, comsol always return an error "no mesh on domain 1. Do not find systematic matrix.". I set the mapped mesh for entire geometry.
But when I change to use a free tetrahedral option for generating the mesh, choosing the extremely fine mesh size, my model works. But if I try to design the element size as 1 km, comsol crashes.
Did anyone meet the same problem before? I want to use 1km*1km for each element, but the model never works.
Can anyone help me?
Thanks!