Bushing Contact

[lLouie]

There is a bushing between the pin and the part. I am loading the part up and down. Therefore, I expect stresses to occur in the hole area of the part, but I am not sure which contact type I should give between the bushing and the part in Ansys. I think that if I give Bonded, it will not reflect the load completely.

 

[dgeesaman]

Presumably the bushing is press fit with adequate interference / contact pressure that there can be no slippage or fretting between the bushing and part in operation. That means the contact interface should behave as bonded. Whether the stresses resulting from the contact pressure are important depend on many things but I don't think those stresses will transmit differently if it's a frictional or bonded contact model.

I suppose you could simulate it as frictional contact and try to estimate the amount of press fit required. I'm not very well versed in Ansys but I believe it can estimate this. The issue is your input for frictional coefficient will be very (very!) approximate.

 

[GregLocock]

What is the fit between the pin and the part? If it is a clearance fit bonded contact will give the wrong bearing pressure distribution. Why can't you use contact?

If it is an interference fit then bonded will ignore the precompression.