加工误差影响柔性铰链机构位移性能的有限元分析  

Finite Element Analysis of Displacement Performances of Flexure Hinge Mechanism Affected by Machining Errors

作　　者：沈剑英[1] 杨世锡[2] 周庆华[1] 严拱标[2] 

机构地区：[1]嘉兴学院机电工程学院 [2]浙江大学机械与能源工程学院

出　　处：《农业机械学报》2007年第7期133-136,124,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：浙江省自然科学基金资助项目(项目编号:502021)

摘　　要：提出一种柔性铰链机构的参数化有限元建模方法,利用有限元软件ANSYS提供的参数化程序设计语言APDL编制程序,在ANSYS中自动生成有限元分析模型。采用该方法分析了柔性铰链最小厚度,切割半径、宽度的加工误差,以及切割圆弧轴心线绕x轴、y轴、z轴的转角误差对柔性铰链机构位移性能的影响情况。分析结果表明,柔性铰链最小厚度的加工误差是对柔性铰链机构位移性能影响最大的因素。A parametric modeling method of flexure hinge mechanism was proposed. Using this method, the finite element analysis model could be automatically created by the document programmed with the parametric language APDL provided by the finite element software ANSYS. The influence of the displacement performances of flexure hinge mechanism was analyzed, which was affected by machining errors radius and the width, and the angular errors of the results demonstrate that the machining error of the all the machining errors. of the minimum hinge thickness, the cutting part axes with respect to x, y and z axis. The minimum hinge thickness is the main factor to all the machining errors.

关 键 词：柔性铰链机构 加工误差 有限元分析 

分 类 号：TH132[机械工程—机械制造及自动化] TP391.7[自动化与计算机技术—计算机应用技术]