I have recently purchased SW2011 and it's running great. I have a situation that I have never had to do before and I haven't got a clue where to look or start. Just as a simple example: I have a bolt and a nut. The bolt material is in inconel and the nut material is stainless steel. Now these are now going to be subjected to heat. I need to find out what the thermal expansion will do at that temperature of both as a assembly. I need to know if the nut is going to become loose and by how much. I have entered all of the material data into the material database. What I need to know is, can it be done? or will I need an add on package to allow me to do this. HELP I'M REALLY STUCK.