结构构型与结构间连接方式协同优化设计  

CONCURRENT OPTIMUM DESIGN OF COMPONENTS LAYOUT AND CONNECTION IN A STRUCTURE

作　　者：乔赫廷[1] 刘书田[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室工程力学系,大连116023

出　　处：《力学学报》2009年第2期222-228,共7页Chinese Journal of Theoretical and Applied Mechanics

基　　金：国家自然科学基金(10572030;10721062);国家重点基础研究发展(973)计划(2006CB601205);教育部新世纪优秀人才支持计划(NCET-04-0272)资助项目~~

摘　　要：通常的结构拓扑优化是在给定外部作用下的构型设计.然而对于复杂结构,各部件由连接构件相连并通过它传递外部作用,所以连接方式影响部件承受载荷的分布,即连接构件的布局对部件的最优构型有重要影响.研究结构部件构型与部件之间连接方式的协同优化问题,在连接区域引入一种特殊的材料模型,以材料的分布描述连接方式.将承力结构与连接构件域的材料密度同时作为设计变量,提出了一种基于拓扑优化思想的连接方式与结构拓扑优化协同设计的优化模型和相应的求解方法.给出的算例证明了这种设计方法与优化策略的有效性.The conventional structural topology optimization external loads. In addition, the linkage model of components is to design the structure layout with fixed in a structure has a great influence on the optimal topology design of structure layout due to the load transfer function of components connection. This paper was focused on concurrent optimum design of components layout and connection in a complex structure. First, a new type of material model was introduced in the connective domain and different material distributions represented different connections between components. Second, the design variable is about the relative material density of loading-carrying domain and connective domain. Third, a topology optimization based the proposed approach was developed as well as the corresponding solving technique for designing structure and connection distribution. The effectiveness of the present design methodology and optimization scheme is demonstrated through numerical examples.

关 键 词：拓扑优化 连接方式 协同设计 有限元 

分 类 号：O343.1[理学—固体力学]