Erik Kostson
Ansys Employee

 

 

 

 

Hi

 

1) I prefer to use shared topology and a compatible mesh instead of contacts

2) It should drop when we add mass – point mass can be ok to represent say only the mass of a bulky/stiff component (rigid option on remote point mass), but we cannot say that this will always represent reality in a good way – perhaps one needs to model these components – also one can do a modal test (measurements) and compare that with the FE results, say with the new Addon NVH toolkit that can copmare the MAC for measured/test and numerical FE results (modal analysis)

3) that says that some contacts (MPC) or remote boundary conditions or mass might have some conflicts with displacement say type of boundary conditions, etc. If you search in the forum and on the internet for this warning you will get perhaps some more info – in general it says that it can impact the solution accuracy –