采用概率法进行柔性铰链的设计和分析  

Design and Analysis of Flexure Hinges by Means of Probability

作　　者：朱强[1] 赵则祥[2] 蒋庄德[1] 

机构地区：[1]西安交通大学精密工程研究所,西安710049 [2]中原工学院,郑州450007

出　　处：《机械科学与技术》2004年第11期1280-1283,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家重点基础研究发展规划项目 (G19990 3 3 10 3 )资助

摘　　要：采用概率法对柔性铰链进行了设计 ,从柔性铰链转角刚度、转动中心偏移、最大应力 3个方面 ,分析了设计中值得注意的问题 ,着重讨论了蒙特卡诺模拟法在柔性铰链设计中的应用 ,建立了参数化模型 ,利用有限元仿真对柔性铰链的主要参数进行设计 ,通过与常规确定性设计结果比较 ,表明采用概率法设计柔性铰链更符合实际情况。The method of probability design of flexure hinges is presented, by which both the material and geometric parameters in the design equations are treated as random variables. Considering the rotational stiffness, offset of the rotation center and maximum stress of the designed flexure hinge, the specific design process is discussed. Some design issues are analyzed. Monte Carlo simulation is applied to the design of flexure hinges. For the purpose of comparison, two parameterized finite element models with different sizes are established by using ANSYS, and the rotational stiffness, rotation center offset and maximum stress are simulated respectively. Compared with the usual determined design, the probability design is more effective and more conformable to practical uses.

关 键 词：柔性铰链 随机变量 蒙特卡诺模拟 有限元 

分 类 号：TH123[机械工程—机械设计及理论]