受动力响应约束的桁架的形状优化  

Truss shape optimization with dynamic response constraints

作　　者：刘齐茂[1] 燕柳斌[2] 翟斌[3] 

机构地区：[1]广西工学院土木建筑系,柳州545006 [2]广西大学土木建筑学院,南宁530004 [3]沈阳职业技术学院,沈阳110045

出　　处：《机械设计与制造》2008年第9期5-7,共3页Machinery Design & Manufacture

基　　金：广西自然科学基金项目(0481007);广西工学院青年科学资金项目(500204)

摘　　要：建立了求解桁架的最优形状,使桁架的重量最小化,同时满足桁架动力响应(杆件横截面的动应力和节点的动位移)约束的桁架形状优化设计的数学模型,采用ANSYS的APDL语言设计了求解该数学模型的算法,从而获得桁架的最优形状。数值结果表明用该方法获得桁架的最优形状是令人满意的,而且算法稳定,效率高,具有很现实的工程意义。Mathematics model of the truss shape optimization design is established for searching the optimum shape of the truss,making its weight minimum,at the same time the truss dynamic response （dynamic stress of the bar sections and dynamic displacement of the nodes） constraints are fulfilled. The algorithmic is designed to solve the mathematics model with the APDL language in the soft ANSYS. Accordingly the optimum shape of the truss is achieved. The result of numerical value shows that the optimum shape of the truss achieved by this method is satisfying, and the algorithmic is steady and efficient.

关 键 词：形状优化 桁架 动力响应约束 

分 类 号：TH12[机械工程—机械设计及理论] TU535[建筑科学—建筑技术科学]