摘要
桁架机构属于各类机械装置的典型结构,在采样机械臂及机电设备中应用广泛。首先建立典型三杆桁架机构的有限元模型,进而通过对其工况受力分析来定义约束和施加载荷;在满足强度和刚度的情况下,基于ANSYS对桁架机构进行了以材料最省为目标的参数优化,通过迭代优化,使最后重量相比初始设计值节省了70%,且受力情况满足应力要求,为桁架研发提供重要参考。
Truss mechanisms belong to the typical structure of various mechanical equipments and are widely used in robotic manipulators and all kinds of engineering equipments.The finite element model of three typical lever truss mechanism is firstly established in this paper,and the forces of the working condition on the girder are analyzed.Then the constraints and applied load are defined to satisfy the intensity and the rigidity.The parameter optimization is constructed to minimize the amount of mate-rial for the truss mechanism based on ANSYS.The results show that the final weight saves of 70%, compared with the initial design value,and satisfies the requirement of stress and strain for truss.
出处
《湖北工程学院学报》
2016年第3期81-83,共3页
Journal of Hubei Engineering University
基金
浙江省自然科学基金资助项目(LY14F030005)
浙江省科技厅公益技术资助项目(2015C31160)
浙江省新苗人才资助项目(2015R431001)
浙江省教育厅项目(Y201534043)
丽水市高层次人才资助项目(2015RC04)
丽水市科技计划项目(2015KCPT03)
关键词
桁架机构
有限元
应力分析
参数优化
truss mechanisms
finite element
prestress analysis
parameters optimization
