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在不同车速下对建立的整车多刚体模型进行平顺性仿真计算，并将仿真分析的结果与实车实验值进行比较，确定所建立模型的有效性。
Under different speeds, series of simulation analyses of vehicle ride are carried out. Compared with the experimental values of the real vehicle, we can make sure the validity of the multi-body model.
本文借助15段的人体模型，使用多刚体动力学的方法建立起航天员转体动作的力学模型。
By using a body model of 15 segments and dynamics of rigid bodies, the astronaut's self rotation is modeled.
同时考虑身管弹性变形，建立了火炮发射时的多刚体动力学模型。
Considering the elastic deformation of the barrel, the AA gun is simplified into a multi-rigid body dynamic model.
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