General Mechanical

General Mechanical

Pipe in a pipe

    • javat33489
      Subscriber

      Hi all. My task is to squeeze the pipe inside another pipe with the help of force. When the pipe is bent, it will start rubbing against the outer pipe, taking into account friction losses, some of the force will be lost at the other end. I have to measure how much power is left. The problem is that the pipe in static analysis is compressed along the axis and does not bend. What can I do to make her start to bend? Should I do a buckling analysis first?

    • peteroznewman
      Subscriber

      You must have some geometric imperfection in the geometry, or an eccentric load or a lateral load to cause the column to buckle. You can use an Eigenvalue buckling solution to change the geometry before you run the Static Structural model, or you can draw the imperfect geometry in CAD, or you can apply a lateral load in step 1 then apply a compressive load in step 2.

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