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所属单位：机电学院
发表刊物：Guangxue Jingmi Gongcheng
摘要：Flexure hinges are the key components of high-precision flexible mechanisms. Their motion precision and range affect the performance of flexible mechanisms. Herein, the flexibility matrix of a circular flexure hinge was derived for optimal design. The flexibility equation of the circular flexure hinge was established using the structure matrix method. The warping and torsional stiffness of the rectangular section was deduced. The approximate equation of torsional flexibility under constrained torsional state was obtained, providing a basis for the exact solution of torsional stiffness of the hinge with small relative length. Compared with the finite element method, the maximum relative error of torsional flexibility is approximately 10%, and the relative error of the remaining flexibility is less than 6%, which verifies the accuracy of the flexibility equation. The sensitivity of the design parameters of the flexure hinge to rotational stiffness was obtained by the orthogonal experimental design. The rotation ability and axial stiffness of the flexure hinge were optimized by the multi-objective genetic algorithm. By comparing the optimization results with the parameters selected according to the design experience, it is found that the bending flexibility of the optimized circular flexure hinge increased by 5.12% and the axial stiffness of the hinge increased by 4.72%. It is proved that the optimal design of the circular flexure hinge has obvious effects. © 2018, Science Press. All right reserved.
ISSN号：1004-924X
是否译文：否
发表时间：2018-06-01
合写作者：李耀,Yang, Xiao-Long,Kang, Sheng-Zheng,Cheng, Shi-Li
通讯作者：吴洪涛