变胞机构冲击运动的研究  

Research on Impact Motion in Metamorphic Mechanism

作　　者：杨世明[1] 金国光[1] 贠今天[1] 冯志友[1] 

机构地区：[1]天津工业大学,天津300160

出　　处：《中国机械工程》2009年第13期1608-1612,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50675154);教育部科学技术研究重点项目(205012);天津市应用基础及前沿技术研究计划项目(09JCYBJC04600)

摘　　要：在构态变化时,变胞机构常常发生冲击。为了探讨变胞机构在构态变化时的冲击特性,根据高斯最小约束原理和Lagrange乘子法,研究了求解变胞机构发生冲击后瞬间速度的方法,得到了求解存在约束情况下发生冲击后瞬间速度的方程式,给出了求解变胞机构构态变化时构件和运动副所受冲击的方法,从而为控制变胞机构冲击提供了理论基础。Impact occurs in metamorphic mechanism when the conhguration changes. For discussing the impact characteristics of metamorphic mechanism as its configuration changes, the solution method of instantaneous velocity in metamorphic mechanism at the time just after an impact was researched based upon Gauss＇ principle of least constraint and Lagrange multiplier method, and the equations of solving the instantaneous velocity with constraints were obtained. The method was given to solve the impact on links and between kinematic pair elements when the configuration changed. These results may provide a theoretical basis for controlling the impact of metamorphic mechanism.

关 键 词：变胞机构 构态 冲击 高斯最小约束原理 

分 类 号：TH112[机械工程—机械设计及理论]