2 Replies Latest reply on Sep 3, 2016 8:01 PM by Jaja Jojo

    Physical Dynamics

    Jaja Jojo

      Im having a problem using physical dynamics in SW2016SP4, I would like to use the physical dynamics to simulate the movement of a bevel gear but when i will rotate the the other gear the program will freeze for 3 about 5 second in above.

       

      Ive search the forum and seen this post of  Lam Yin this is his post but it does not have a reply

      https://forum.solidworks.com/thread/118803?q=Physical%20Dynamics

       

      here is a video of what im doing

        • Re: Physical Dynamics
          Dennis Dohogne

          Physical Dynamics is perhaps the most computationally intensive operation you can do in SWX.  Gears are one of the most difficult to do on top of that because you probably have an actual involute shape and you probably have zero/minimal backlash - there is literally no room for the parts to move without overrunning their position.  Unless you are moving one of the gears very, very slowly and are very, very patient you will not even get good results.  A slight movement beyond what the physical dynamic calculations can keep up with will cause everything to bind up.  Don't be surprised if you get a bunch of crashes doing this either.

           

          One of the things SWX has done to make this easier is to provide gear mates, which work well to keep the proper turning speeds/displacements between gear components.  Instead of physical dynamics for anything complicated, such as gears, you will be better off with proper mate schemes and doing a simple motion simulation.

           

          I've seen and done some really cool things with physical dynamics, but due to the required computations for anything more than a very simple mechanism I now only use the motion simulation.