General Mechanical

General Mechanical

Keypad (Tactile switch) simulation

    • akasha510
      Subscriber

      Hello guys,


      I am trying to do simulation of keypad structure. and want to make like below force-displacement diagram. But, unable to draw this one. material is silicone. i give displacement and get force reaction. But, force-displacement diagram is totally different. just straight line. 


      Please help me



       


      Force-displacement diagram

    • peteroznewman
      Subscriber

      Please show the Analysis Settings.  Did you turn on Large Deflection?


      Did you turn on Auto Time Stepping and then set an Initial, Minimum and Maximum number of Substeps to be 100?


      Do you have Frictional Contact defined at the switch contacts?

    • akasha510
      Subscriber


       


      Getting this data and error. large deflection- on, auto stepping- on, don't have frictional contact


      thank you

    • peteroznewman
      Subscriber

      Under Analysis Settings, turn on Stabilization.

    • akasha510
      Subscriber

      stabilization - constant, Still getting same error. and also change the mesh size. 


      error- unable to converge on a solution for nonlinear problem as constrained.

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