航天器环境工程2023，Vol.40Issue(6)：611-616,6.DOI:10.12126/see.2023077
考虑局部模态约束的卫星结构优化
Structural optimization for satellites with a consideration of local modal constraints
刘嫣洁 1杨苗苑 1李子轩1
作者信息
- 1. 航天科工空间工程发展有限公司,北京 100039
- 折叠
摘要
Abstract
In satellite structural design,the traditional structural optimization method based on global frequency constraints could not be directly applied to the local frequency constraints with mode switching.Therefore,an approximation method was proposed in the present work.It is assumed that the change in the overall mass matrix of the structure could be neglected during the optimization,and the modal shapes of the specified local frequency were consistent before and after optimization.Based on those two assumptions,the original optimization for local frequency constraints was transformed into an optimization for nodal displacement constraints of the local region,and that the nodal displacement constraints were determined by the ratio of the present local frequency to the expected local frequency.Both numerical and practical engineering optimization examples verified the feasibility and effectiveness of the proposed method.关键词
卫星结构优化/全局频率/局部频率/节点位移约束Key words
satellite structural optimization/global frequency/local frequency/nodal displacement constraints分类
航空航天引用本文复制引用
刘嫣洁,杨苗苑,李子轩..考虑局部模态约束的卫星结构优化[J].航天器环境工程,2023,40(6):611-616,6.
