Different results by mesh size
Different results by mesh size
(OP)
Hello
I am pretty new and just trying to solve simple cantiliever beam.
But, Everytime I change the mesh size or element type, the results are also changed significantly. I don't see what's wrong. Is it normal? Is there any general rule to make reasonal mesh size or density? Any feedback would be very appreciated.
Thank you!
J
I am pretty new and just trying to solve simple cantiliever beam.
But, Everytime I change the mesh size or element type, the results are also changed significantly. I don't see what's wrong. Is it normal? Is there any general rule to make reasonal mesh size or density? Any feedback would be very appreciated.
Thank you!
J





RE: Different results by mesh size
Thank you.
RE: Different results by mesh size
HTH.
Dan
Han primo incensus
RE: Different results by mesh size
I tested several cases (different Load types, different BC types,....). Whatever the cases, the higher the mesh density, the higher the stress level. I don't know which makes more sense.
Can you please do this simple test? If you don't see this on your test, definitly something wrong on my test.
Thank you so much again.
J
RE: Different results by mesh size
RE: Different results by mesh size
The results depend on the mesh, if the mesh isn't well adapted. For example, for this kind of simulation, you need at least 4 elements C3D8R (Hexa) im the thickness. If you use tetrahedral elements (C3D10), 2 may be sufficient.
In this case, you can compare the simulated deflection or force, with the theoretical solution to verify your mesh.
Regards