General Mechanical

General Mechanical

Shaft-hub coupling with clearance

    • michelegulino
      Subscriber

      To whom it may concern,


      here is an image of my model:

    • peteroznewman
      Subscriber
      I expect you could get the model to converge with the proper settings for CAD geometry that was line-to-line on the pin/hole using contact offset.nWhy is it a problem if the model converges when the CAD has the correct clearance?nThe biggest factor is the number of elements around the cylindrical surfaces and the order of the elements.nDon't use Linear elements. Even if you use Quadratic elements, it is important to have many elements around the half cylinder. How many do you have? Please show the mesh.n
    • michelegulino
      Subscriber
      Yes, both CAD geometry clearance and Offset clearance models share all the settings.nMy first choice would have been the offset command to set the clearance because I used it before to simulate an interference with the same geometry, mesh etc. and it worked.nI used a sfhere of influence centered in the pin with element size 0,5 mm and midsize nodes kept:n
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