You need to know the coefficient of friction between the faces that are being bolted together for this. Now evaluate the results to see if the applied forces and moments can create a gap in the joint and if the shear forces can cause the joint to slip. Add the Bolt Pretension load to the model and make the model a 2-step solution where step 1 is Bolt pretension Load and Step 2 is Lock. This could be Beam elements or a 3D solid mesh on the bolt. Next phase is to replace the Fixed Joint with a representation of the bolt that can have the preload applied. Calculate the preload using a Bolted Joint calculator. Select an appropriate torque for that bolt size. Using the forces and moments from the Fixed Joint, select a candidate bolt size using simple hand calculations. Yes, you could use a beam to get the same information, I prefer a Fixed Joint. To design a bolted joint, first you need to extract the forces and moments that go through that bolt during the applied loads.Ī simple way to obtain the forces and moments is to use a Fixed Joint and request the Joint Reaction Force output in the solution.
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