9 Replies Latest reply on Aug 3, 2018 5:06 PM by Ryan Dark

    Unrealistic stresses in "simple" analysis.

    Josh Barnett

      Good evening all,

       

      I am trying to analyze a part, simulating wind pressure on a large surface.

       

      I have an aluminum extrusion, which is attached to a foam board.

       

      The aluminum has a hinge which attaches to another piece.

       

      So, the hinge would be fixed and the rest of the part is free to move. I want to apply pressure to the board, and I am concerned about the aluminum hinge failing.

       

      First issue, my mesh ratio is too high, and I'm not sure if it is causing the following issue.

       

      I want to apply 30-40 psf to an 8'x8' board. Then trasfer the load onto the extrusion.

       

      For example I applied a force of ~500lb (made it up), but this displacement is only .00106 inches.

       

      The material is 6061-T6 and the thickness of that area is only 0.09"

       

      So it seems to me it's incorrect.