In the automotive industry, we often deal with shaft couplings because they are very effective at transferring torque. One type of shaft coupling is one with a knurled interference fit. In this thesis we examine the different variables which influence the shaft coupling and propose an equation for calculating maximum torque and push-in force respectively. We focused on three different materials including steel (C45), aluminium alloy (AlMgSi1) and brass (CuZn5). Unlike with a classical interference fit, we must also consider the transfer of torque via the shape of the coupling itself as well as via friction. The problem of evaluating this joint are the plastic deformations which occur during the shaft joining.
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