I'm working on a strange case: a plate is welded to a heavy shaft (6,2t) and it is submitted to a quencing cycle with the shaft.
So the shaft must be lifted at 830°C after the heating cycle (about 12 hours).
I would perform contact analysis between hook and plate hole considering the plate material elastic-plastic and hook material elastic (room temperature parameters)
Some ideas about contact parameters? Elastic modulud of structural steel at 830°C decreases until 17000 MPa.
Thanks
Comments
About contact parameters, maybe you should try with the similar values as for normal temperature, and maybe decrease a little as the stiffness of the structure and E has decreased also. The more higher the contact parameters will need more iterations but less penetration on the model. Also if you add friction would be a help to the solver.
Yesterday I worked with a rubber bumper with insanne contacts and play a little with those values, will try to upload some pictures later.
Best regards
Euronorm give a 33 MPa Yiled stress for S355 at 830°C