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有無大佬知道LS-DYNA的約束部分關于*CONSTRAINED_RIGID_BODY_STOPPERS中關于PSIDMX和PSIDMN這兩個關鍵字的使用，我參考手冊建模，設計好參數，計算結果這兩個功能并沒有顯示出預期的效果，不知道是不是參數設置的問題，反復檢查也沒檢查出來，求大佬解答

are declared as rigid using the *rigid body option3 nodes associated with rigid bodies have boundary conditions prescribed at nodes other than the reference node.

Nodes belonging to 2 RIGID BODIES have boundary conditions prescribed at nodes other than the reference node. These boundary conditions indicate the rigid bodies cannot rotate about certain axes.

Nodes that are part of an isothermal rigid body do not require capacitance individually, but the rigid body as a whole must possess capacitance unless constraints are used.

報錯： The rigid bodies with the reference nodes contained in node set ErrNodeRefNodeNoRot1Axis have atleast one axis about which the rotary inertia magnitude is zero, and the rigid bodies have atleast one