航天器环境工程2015，Vol.32Issue(5)：484-488,5.DOI:10.3969/j.issn.1673-1379.2015.05.005
泡沫铝板弯曲振动特性数值研究
Numerical simulation of bending vibration of aluminum foam plate
王鹏飞 1刘孟周 1刘同辉 1张成立1
作者信息
- 1. 北京卫星环境工程研究所,北京 100094
- 折叠
摘要
Abstract
As a new type of lightweight high-strength materials, the aluminum foam is made based on a new concept of porous metal materials through the formation of air bubbles. In this paper, with consideration of the structural characteristics of the aluminum foam, a bending vibration model of the aluminum foam is built based on the Timoshenko beam theory. With the model, the accurate resonant frequencies and amplitudes are obtained. The analytical results are verified by the results of the finite element modal analysis. From the obtained frequency characteristics of the foam aluminum, it can be seen that the vibration frequency of the aluminum foam used in the field of manned space is far from the base frequency of the manned spacecraft. Finally, the first-order frequency based on the bending vibration model of the aluminum foam is studied by changing the elastic modulus and density. With the increase of the modulus, the first-order frequency increases; on the other hand, with the increase of density, the first-order frequency reduces. Thus by changing the parameters of the aluminum foam, different frequent characteristics of aluminum foam can be obtained, to be used under different conditions of the manned spacecraft.关键词
泡沫铝/结构特性/材料参数/弯曲振动/数值研究Key words
aluminum foam/structure characteristics/materials parameters/bending vibration/numerical research分类
通用工业技术引用本文复制引用
王鹏飞,刘孟周,刘同辉,张成立..泡沫铝板弯曲振动特性数值研究[J].航天器环境工程,2015,32(5):484-488,5.
