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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 >A pseudo-rigid-body 2R model of flexural beam in compliant mechanisms
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A pseudo-rigid-body 2R model of flexural beam in compliant mechanisms

机译：柔顺机构中挠性梁的准刚体2R模型

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Based on the pseudo-rigid-body model (PRBM), a 2R PRBM that consists of three rigid links joined by two revolute joints and two torsion springs is proposed in this study. A method of parametric approximation to the deflection path and deflection angle of a flexural beam is developed for the 2R PRBM. A two-dimensional optimization for the characteristic radius factors and a linear regression for the spring stiffness coefficient are presented. Although the model parameters are dependent on the loading conditions, the 2R PRBM is useful in increasing the modeling accuracy of the 1R PRBM and reducing the computation time of the 3R PRBM. The advantage of the new model is also illustrated through a comparison of deformation energies among the various kinds of PRBM and the flexural beam. An application example of compliant mechanism is presented using the 2R PRBM. The 2R PRBM is significant to expand the applications of pseudo-rigid-body model in the analysis and design of compliant mechanisms, particularly in the further study on the dynamics of compliant mechanisms.
机译：基于伪刚体模型（PRBM），本研究提出了一种2R PRBM，该2R PRBM由三个刚性连杆组成，两个刚性连杆由两个旋转关节和两个扭力弹簧连接。针对2R PRBM，开发了一种参数化近似挠曲梁的偏转路径和偏转角的方法。提出了特征半径因子的二维优化和弹簧刚度系数的线性回归。尽管模型参数取决于加载条件，但是2R PRBM有助于提高1R PRBM的建模精度并减少3R PRBM的计算时间。通过比较各种PRBM和弯曲梁之间的变形能，也可以说明新模型的优势。使用2R PRBM给出了兼容机制的应用示例。 2R PRBM对于扩展准刚体模型在柔顺机构的分析和设计中的应用具有重要意义，特别是在柔顺机构动力学的进一步研究中。

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