基于模态综合法的大型结构模型修正技术

朴思扬; 祁峰; 张亚辉

doi:10.21656/1000-0887.390065

基于模态综合法的大型结构模型修正技术

doi: 10.21656/1000-0887.390065

¹工业装备结构分析国家重点实验室(大连理工大学), 辽宁大连 116024;²北京宇航系统工程研究所,北京 100076

基金项目: 国家自然科学基金(11672060)

详细信息

作者简介:
朴思扬(1992—)，男，博士生(E-mail: siyang_piao@mail.dlut.edu.cn)；祁峰(1985—)，男，高级工程师(E-mail: qifeng04@tsinghua.org.cn)；张亚辉(1972—)，男，教授，博士生导师(通讯作者. E-mail: zhangyh@dlut.edu.cn).

中图分类号: O342
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出版历程
- 收稿日期: 2018-02-27
- 刊出日期: 2018-09-15

Model Updating for Large Structures Based on the Modal Synthesis Method

¹State Key Laboratory of Structural Analysis for Industrial Equipment(Dalian University of Technology), Dalian, Liaoning 116024, P.R.China;²Beijing Institute of Astronautical Systems Engineering, Beijing 100076, P.R.China

Funds: The National Natural Science Foundation of China(11672060)

摘要

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.
- 有限元理论 /
- 模型修正 /
- 动力子结构法 /
- 模态综合法
Abstract: 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.
- finite element method /
- model updating /
- dynamic substructure method /
- modal synthesis method

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参考文献(28)

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