摘要
基于有限元模型修正理论和模态综合法,改进了子结构试验建模综合方法.在子结构模型修正阶段,应用固定交界面模态综合法,对子结构模型实施减缩,提高子结构模型的计算和修正效率,从而提高了子结构试验建模综合技术整体计算效率.在减缩模型的基础上,推导模型修正设计参数法的计算公式,详细列出此方法的执行步骤,并以某运载火箭模型为算例,结合商业软件ANSYS二次开发,验证了该文方法的有效性.
A synthetic technology for substructure test modeling was developed based on the finite element model updating theory and the modal synthesis method. During the substructure model updating,the fixed interface component modal synthesis method was adopted to reduce the substructure model,improve the computational efficiency and thereby promote the overall efficiency of the substructure test modeling. The steps of the design parameter method in model updating and the corresponding formulas based on the reduced model were given. With a launch vehicle model as the example,and by means of the secondary development of ANSYS,the present method gets verification of effectiveness.
作者
朴思扬
祁峰
张亚辉
PIAO Siyang;QI Feng;ZHANG Yahui(State Key Laboratory of Structural Analysis for Industrial Equipment（Dalian University of Technology）,Dalian,Liaoning 116024,P.R.China;Beijing Institute of Astronautical Systems Engineering,Beijing 100076,P.R.China）（Contributed by ZHANG Yahui,M.AMM Editorial Board)
出处
《应用数学和力学》
CSCD
北大核心
2018年第9期989-998,共10页
Applied Mathematics and Mechanics
基金
国家自然科学基金(11672060)~~
关键词
有限元理论
模型修正
动力子结构法
模态综合法
finite element method
model updating
dynamic substructure method
modal syn- thesis method
