环形柔性铰链动力学建模与分析
ynamic Modeling and Analysis of Annulus-shaped Flexural Pivots
环形柔性铰链具有行程大、轴漂小、约束/运动方向刚度比高等优点，为了揭示环形柔性铰链的动态特性，基于柔性梁约束模型和拉格朗日方程推导出了环形柔性铰链的动力学模型，该动力学模型考虑了垂直力载荷的影响。分别利用有限元分析和模态实验方法，通过求解环形柔性铰链的一阶固有频率，验证了动力学模型的有效性和准确性，动力学模型所得结果同有限元分析和模态实验结果之间的相对误差不超过2%和4%。最后分析了簧片长度、簧片宽度、簧片厚度和中心刚体半径等结构参数对环形柔性铰链一阶固有频率的影响。
he annulus-shaped flexural pivots (ASFP) provide a large-deflection stroke with very small parasitic error motion and great ratio of constraint-to-motion stiffness. For revealing the dynamic behaviors of ASFP, the dynamic modeling of ASFP is presented, based on the Beam Constraint Model and Lagrangian method, the effect of vertical force is included in this model. The model predictions of the first natural frequency of ASFP were compared with FEA and modal experiment results. The model predictions are well matched with FEA and modal experiment results within 2% and 4% relative error, respectively. Finally, the parametric analysis of ASFP is carried out to predict the influence of various structure parameters on the first natural frequency.
杨春卫、姚艳彬、代建辉、毕树生
机械学机械设计、机械制图机械零件、传动装置
环形柔性铰链动力学模型一阶固有频率
annulus-shaped flexural privotdynamic modelingfirst natural frequency.
杨春卫,姚艳彬,代建辉,毕树生.环形柔性铰链动力学建模与分析[EB/OL].(2012-12-28)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201212-1165.点此复制
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