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首页> 外文期刊>Mechanism and Machine Theory: Dynamics of Machine Systems Gears and Power Trandmissions Robots and Manipulator Systems Computer-Aided Design Methods >Modeling and simulation of a planar rigid multibody system with multiple revolute clearance joints based on variational inequality
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Modeling and simulation of a planar rigid multibody system with multiple revolute clearance joints based on variational inequality

机译:基于变分不等式的多旋转间隙接头的平面刚性多体系的建模与仿真

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The main objective of this work is to provide a nonsmooth strategy for solving planar rigid multibody systems with multiple revolute clearance joints. In the present work, based on the variational inequality, the governing equations of the multibody system are obtained by the principle of Hamilton's variation, and the discrete form of the governing equations satisfies symplecticity. The impact reaction and the friction reaction are expressed by the Newton impact law and modified friction model. According to the complementary relationship of the impact reaction and relative velocity, the contact reaction together with the relative velocity are formulated as a standard linear complementary problem and solved by Lemke's method. Eventually, several examples with multiple revolute clearance joints are tested by the proposed method, correctness of the results obtained by the proposed method are compared with those of ADAMS. Meanwhile, the effects of different number of clearance joints, different values of impact coefficient and driving load on the dynamic behavior of multibody system are studied. The results show that the proposed method performs well for multibody system with multiple revolute clearance joints. (C) 2020 Elsevier Ltd. All rights reserved.
机译:这项工作的主要目的是提供具有多个旋转间隙关节的平面刚性多体系的非结构性策略。在本作工作中,基于变分不等式,通过汉密尔顿的变化原理获得多体系的控制方程,控制方程的离散形式满足了杂项。冲击反应和摩擦反应由牛顿抗冲法和改性摩擦模型表示。根据冲击反应和相对速度的互补关系,将接触反应与相对速度一起配制成标准的线性互补问题,并通过LEMKE的方法解决。最终,通过所提出的方法测试具有多个旋转间隙关节的几个例子,与所提出的方法获得的结果的正确性与ADAMS的方法进行比较。同时,研究了不同数量的间隙接头,影响系数值和驱动负荷对多体系的动态行为的影响。结果表明,该方法对具有多个旋转间隙关节的多体系进行了良好。 (c)2020 elestvier有限公司保留所有权利。

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