含螺栓连接结构的非线性静力学拓扑优化  

Nonlinear Static Topology Optimization of Structures Containing Bolted Connections

作　　者：张晓頔 郝志明[1] 李一堃 刘远东[1] ZHANG Xiaodi;HAO Zhiming;LI Yikun;LIU Yuandong(Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621900,China;Institute for Advanced Studies,Chengdu University,Chengdu 610106,China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621900 [2]成都大学高等研究院,成都610106

出　　处：《兵器装备工程学报》2018年第8期74-78,共5页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(11432011);中国工程物理研究院计算固体力学学科资助项目

摘　　要：针对含螺栓连接的组合结构,采用六参数Iwan模型描述螺栓连接部分的非线性力学行为,以结构质量最小为目标函数,以单元最大等效应力满足许用应力要求以及连接处不产生宏观滑移为约束条件,建立含螺栓连接结构的非线性静力学拓扑优化方法。通过含螺栓连接圆筒组合结构的优化算例,验证了所提出方法可以应用于含螺栓连接复杂工程结构的静力学拓扑优化设计。Aiming at composite structures containing bolted connections,a six-parameter Iwan model is used to describe the nonlinear mechanical behavior of bolted connections. With a minimum mass as objective function and a limited maximum equivalent stress and no macro-slip in connection part as constraint conditions, a nonlinear static topology optimization method of structures containing bolted connections is built. By applying on nonlinear static topology optimization of a composite cylinder structure containing bolted connections,it is proved that this method can be used on static topology optimization of complex engineering structures containing bolted connections.

关 键 词：非线性 拓扑优化 渐进法 螺栓连接 Iwan模型 

分 类 号：O34[理学—固体力学] TJ03[理学—力学]