On 12/06/11 09:38, Md. Golam Rashed wrote:
i don't think it represents the same geometry. if it were the same geometry, the analytic solution would not differ for the mesh refinement, would it? i think there is a overall dimension change for the "big.mesh". i don't have any mesh editor and importing to Gmsh fails.
It does represent the same geometry, I checked that.
I am not sure what is the actual definition of the "analytical solution" though. It seems to be computed using nodal forces, which do depend on element size, so it is not truly analytical.
Andre, are you around? :)
################################ for its2D.mesh-
Load to give 1 mm displacement = 1209.789 Newton
Analytical solution
Horizontal tensile stress = 5.135 MPa/mm Vertical compressive stress = 15.404 MPa/mm
FEM solution
Horizontal tensile stress = 4.58 MPa/mm Vertical compressive stress = 15.646 MPa/mm ################################ for big.mesh-
Load to give 1 mm displacement = 740.779 Newton
Analytical solution
Horizontal tensile stress = 3.144 MPa/mm Vertical compressive stress = 9.432 MPa/mm
FEM solution
Horizontal tensile stress = 3.148 MPa/mm Vertical compressive stress = 9.419 MPa/mm