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.

Mike