I was just trying out a simple double lap joint config with contact enabled. The analysis was SOL 101. All geometry was represented using solid CHEXA elements in NX Nastran.
I don't understand the brown color of element faces for the pin. What does it mean? Never seen it before.
I am not sure what I am doing wrong. I have attached a copy of the dat file. I would appreciate some help in resolving the above problem.
Thx for your suggestions.
I was just about to post my response about figuring out what the brown faces in Femap means. I have done some contact analysis before but its been a while. I guess I was a little preoccupied with figuring out the reason behind deformation pattern and the brown coloring appeared as an unknown surprise.
I suddenly realized about an hour ago while driving that Femap represents the contact regions using brown color!
I will try your other suggestions including starting out with a simpler model and progressivley increase the complexity.
Sounds like you're on your way!
Keep thinking modeling is like programing...build the parts up and continually check (with analysis runs) as you go.
Wanted to report here that I was able to successfully run the double shear lap joint analysis with contact and arrive at results which are satisfactory. One of the key things was to create a contact pair between middle plate and top/bottom respectively and model the bolt head/rivet head.
I would like to thank EWiener for his suggestion on the first part.