How to apply preloads to a bolt model in Simcenter with Nastran solution 402

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Questions about preloads are common. If you've ever wondered how to model a bolted connection or how to model the bolt torque in an analysis, this video has the answers.


You'll see how to apply bolt preloads to a model in Simcenter with Nastran solution 402 as we demonstrate the nonlinear material capabilities of SOL 402.



You'll see how to easily:
• Idealize the bolt for meshing (Split body)
• Mesh the bolt
• Create a Preload subcase in SOL 402

• Create a Preload load


Starting in the idealized part, we cut the bolt in half to create a plan to apply preload. Next, in the FEM, we added mesh mating conditions to each bolt to ensure a continuous mesh. In the SIM, we used preload subcases to establish preload before the internal pressure was applied.


This is how you define a preload on 3D elements using the cut-plane method in Simcenter NX.


Check out our related video on how to simulate a flat gasket in Simcenter with Nastran solution 402.