I have a relatively simple model with 3 solid bodies and have been running simulations to try and get consistent results. I started off with a very coarse mesh and to ensure the solver managed to converge.
I have gradually reduced the mesh size in there areas of interest (pull connections and locations of applied restraint) and have ran into a number of problems. The maximum stress values continually rise the more I refine the mesh due to singularities and the stress error plots return extremely high values. I have used a number of techniques provided throughout the forum (not shown in this model), such as fillets, simplification of geometry with little success.
So my questions are:
- What mesh size should I be using at the areas of interest and the areas deemed not critical
- What stress error is acceptable
- What techniques are best to eliminate singularities
Thanks in advance.