Difference between the different von mises?
Difference between the different von mises?
(OP)
My FEA software gives me the option of looking at top, membrane, bottom and max von mises stress. If I have for example a cube, and load applied in the middle at the top, and I want to find the highest point of stress in the plates below (not top plate), which von mises stress should I look at?


RE: Difference between the different von mises?
RE: Difference between the different von mises?
Also Ive been told to make the top plate thick, as it will distribute the loads more equally to the plates below - why is it that thick plates distribute load more equally than thin plates?
RE: Difference between the different von mises?
Can you say more about the model ? The thickness of shell elements should depend on the dimensions of the actual structure. But it can be easily changed so you can try with different values and see how they affect the results.
RE: Difference between the different von mises?
another day in paradise, or is paradise one day closer ?
RE: Difference between the different von mises?
another day in paradise, or is paradise one day closer ?
RE: Difference between the different von mises?
Membrane- plate mid surface stress
Bottom- plate bottom surface stress
Max-most probably max value of stress between two-top and bottom surface
To check which plate has max stress, plot max stress( if above is true).
If the cube is made up of 6 faces with thickness and modelled as hollow shell cube , and you are applying load at the top face, I would expect the top plate to undergo bending, the vertical plates to undergo bending + axial compression and bottom plate to undergo compression.
Most probably stress will be max at the top plate(plate where load is applied)-top surface.
RE: Difference between the different von mises?