I am trying to run an analysis on a frame that I've built with weldments. It has 2200lb force straight down and is fixed by some brackets at the top that I've created individual contact sets for. I'm still new to simulation and I've made a lot of mistakes along the way but I'm slowing learning. I feel like I've done everything right but cleary I haven't yet. I can only get it to run with "Use Inertial Relief" and if I don't, I get "Model is unstable. Restraints may not be adequate". When I get the results back, none of the tubing is shown in the stress and I only get the brackets and plates shown. I have attached the results. Thanks for any help.