1 Reply Latest reply on May 23, 2016 11:55 AM by Ananda Ganesh Madheswaran

    Problem with BC for a tube-fitting / adapter design

    Hampus Johansson

      Hi everyone,
      I'm currently evaluating a tube-fitting (adapter) made out of plastic. The pipes that the adapter connects is made out of steel.

      The problem is when a person by mistake puts a load on the pipes they tend to break the adapter. Now I'm evaluating a new design or possibly a new material

       

      The problem:

       

      I've made the conclusion that the easiest way is to perform the analysis in an assmebly with the pipes present inside the adapter.

       

      -Put the load on one pipe,

      -fix the other one

      -and by contact boundary condition (no penetration) get the loads/strains in the adapter. (see attached PDF)


      I woluld like to skip the assembly-step and just do the assumptions with "smart" BCs, do you guys have any tips regarding this?
      Otherwise, please help me find whats wrong with my current BCs since I get almost no stress/load transfer out to the adapter part.