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Hello, I have been confusing about the lumped mass setting on crash analysis, which way is the best for representing the entire weight of the vehicle. For my questtions, 1. What should I set for the ICOG card ? normally, I tried with 1 or 3 but I didn't know the exactly definition yet. 2. What is the most suitable cases to set the number of node for RBE? I should select only the nodes at the edge or more ? (the green one ,as a figure below) 3. Generally, I define the inertia mass in RBE2 using card edit directly, but it also has ADMAS manager which will add the mass into the node instead. What is the best way to deal with it? Best regard