平面连杆机构力学特性研究  

Study on mechanical property of planar-lonkage mechanism

作　　者：黄鹏飞[1] 

机构地区：[1]西京学院机械工程学院,陕西西安710123

出　　处：《食品与机械》2017年第5期125-127,215,共4页Food and Machinery

基　　金：西京学院横向课题资助项目(编号:1610975)

摘　　要：以机构学原理为基础,分析了平面连杆机构的运动学特性。通过数字化建模与动态仿真技术,建立功能型曲柄—摇杆机构仿真模型,获得了运动学设计参数。利用Simulation模块动态载荷无缝输入方式定义有限元模型边界条件,方便快捷地实现了单个构件和不同组件的应力及形变分析,有效提高了静力学分析的精度与可靠性。利用模态分析,计算出了曲柄—摇杆机构在极限位置的固有频率与振型,并在ANSYS环境下实现了极限位置处的模态特性优化,机构的抗振性能明显提高,有效改进了曲柄—摇杆机构的动力学特性。The kinematics characteristic of planar-linkage mechanism is analyzed based on mechanism theory, Through digital modeling and dynamic simulation technology, a functional simulation model of crank-rocker mechanism is set up, and then the design parameters of kinematic are obtained. Because boundary conditions of the finite ele- ment model is defined through seamless input of dynamic loads on Simulation modules, stress and deformation analysis of individual component and different subassembly are realized conveniently, and the accuracy and reliability of the statics analysis is improved effec- tively. Frequency and vibration mode of the mechanism in limit posi- tion are calculated through modal analysis. Besides, modal character istic of the mechanism in limit position is optimized by ANSYS soft ware, and then dynamic characteristic of the mechanism is improved effectively.

关 键 词：运动学 连杆机构 静力学 动态仿真 有限元 

分 类 号：TH112[机械工程—机械设计及理论] TS203[轻工技术与工程—食品科学]