基于优化方法的桅杆结构有限元模型修正  

FEM Correction for the Guyed Mast Structure Based on Optimization

作　　者：查小鹏[1] 帅群[1] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070

出　　处：《国外建材科技》2008年第5期83-86,共4页Science and Technology of Overseas Building Materials

基　　金：国家自然科学基金(50678142)

摘　　要：为了给桅杆结构的健康监测研究提供一个较为准确的有限元基准模型,采用规划优化算法作为桅杆结构模型修正的基本工具,同时将优化算法与大型有限元分析软件相结合,首先,利用ANSYS软件仿真得到桅杆结构的一组动力响应数据,并将它作为模拟的实测数据,用以作为有限元模型修正的基准。其次,以桅杆结构结构的杆端联结刚度可调的杆件有限元模型为对象,以杆端的节点连接刚度为修正参数,以结构模型的节点位移作为修正目标,建立了目标函数从而修正了结构的有限元理论模型。In order to provide a precision finite element model for the research of the guyed mast structure hea-lth monitoring. We used optimization design principle as basic tool for the structure FEM correction and combined the optimization principle with software of FEM analysis. First, the structure＇s dynamic response information will be obtained by using AN- SYS,and these information will be made for criterion of FEM correction, second this paper took the FEM of guyed mast structure which the member bar＇s joint link stiff are changeable as subject, took the member bar＇s joint link stiff as modify parameter,and took the node displacement as modify objection. Then the objective function was choosen, and the finite element model was corrected.

关 键 词：桅杆结构 有限元模型修正 联结刚度参数值 优化算法 

分 类 号：TU347[建筑科学—结构工程]