AnsweredAssumed Answered

Wild displacement

Question asked by Adam Kulish on Feb 8, 2018
Latest reply on Feb 9, 2018 by Adam Kulish

I am doing some simulation on some basic frame rails. Trying to see what worse-case-scenario deflection is when loaded to GVWR.

6" x 3" 316 11ga 316 SS bar.

Fixed geometry at front edge, fixed geometry under rear axle.

Load is applied over the entire top of bar (240lbf)

No other components, just the rail. Has few lightening holes and cutouts.

I have ensured everything is drawn properly.


For some reason, I run the simulation and get a serious deflection out of the beam. Looks like a roller coaster. However, it shows no major stresses or strains anywhere on the part. Just a huge displacement. Even if i change the force to 1lbf there is still the same amount of deflection shown in the results, but the stresses and strains are nonexistent. I don't understand what is going on here, and would just like to be able to show an accurate representation of how much the beam could actually deflect.


Thanks in advance