4 Replies Latest reply on Mar 4, 2014 2:47 PM by Shaun Densberger

    Motor Size

    Clive Denley

      Hi, I would like to simulate what is in effect a large washing mangle.

      The machine will be driven by an electric motor, and i would like to see what size of motor would be best suited.

      A dough like substance will be placed in between the rollers then squashed into a flat strip as it passes through, is the general idea.

      The dough like material is un-cured silicone rubber, though because it is un-cured i dont have any material datd other than its plasticity or viscosity.

      Can you advise the best way of tackling this study please.

      Thanks

      Clive

        • Re: Motor Size
          Jared Conway

          can't be done with solidworks simulation, you'd have to look at something like ABAQUS to handle such a nonlinear problem (squishing the dough between the rollers).

           

          make a best guess at the force required to squish it and estimate motor needs from there.

            • Re: Motor Size
              Clive Denley

              Now that has made me chuckle.

              Simulation Premium and I'm still guessing.

                • Re: Motor Size
                  Jared Conway

                  if you can come up with a hyperelastic material property or similar

                  you could potentially get them to squish it

                  you may need to go up to a nonlinear dynamic to get everything to work

                  ABAQUS is better equipped to handle such a nonlinear problem.

                  • Re: Motor Size
                    Shaun Densberger

                    If you're going to try to do this with SW, then Jared is on the right rack; you'll need to develop a hyper-elastic material model. You'd also need to account for contact between the rollers and the material, which for this problem (I would think) will be very difficult without making a nice mapped mesh between the roller and the material (which SW can't do). I'd start with a 2D plane strain model, with one roller and half the material thickness (and a symmetry constraint at the exposed edge of the cut on the material) and see if you can get that to work.

                     

                    However, even if you get this to work, I don't know how much I'd trust the results. This is a very non-linear problem, and as Jared pointed out, it would probably require a very advanced code like ABAQUS (or LS-DYNA).