计算力学学报2018，Vol.35Issue(3)：393-398,6.DOI:10.7511/jslx20170301001
弹性薄板结构的等效激励谱反演问题研究
Research on inversion technique of equivalent excitations of flexible panel structures
王伟科 1霍睿 2王志东1
作者信息
- 1. 山东大学 机械工程学院,济南250061
- 2. 山东大学 高效洁静机械制造教育部重点实验室,济南250061
- 折叠
摘要
Abstract
Detection of sonar platform excitations has been a formidable obstacle towards the estimation and evaluation of mechanical self-noise in the sonar cavity.In view of the complexity oftransmission of excitations from mechanical vibration equipment to a sonar platform,an inversion technique,i.e.,indirectly estimating the outside excitations by means of measurement of vibratory responses,would be the most applicable and feasible.An equivalent excitation method is proposed in this paper,based on the hypothesis that responses resulted from equivalent excitations would be equal to those from the actual excitations,to deal with the inverse excitation problem in situations where there is no knowledge about the location and distribution of dynamic excitation forces acting on structures.Influential factors in estimation of equivalent excitations are carefully analysed based on modal theory of panel structures,with both analytical analysis and FEM simulation method.It could be concluded that the equivalent excitation inversion would be a practical method for evaluation of environmental excitations.关键词
激励谱/反演/等效激励/板壳结构/主要影响模态Key words
excitation spectrum/inversion/equivalent excitation/plate and shell structures/master mode分类
通用工业技术引用本文复制引用
王伟科,霍睿,王志东..弹性薄板结构的等效激励谱反演问题研究[J].计算力学学报,2018,35(3):393-398,6.
