《万方数据-数字化期刊群》全文上网期刊
CNKI《中国学术期刊(网络版)》全文收录期刊
《中文科技期刊数据库》(维普网)全文收录期刊
超星期刊域出版平台、博看网全文收录期刊
日本科学技术振兴机构数据库收录

随机激励下铝蜂窝夹层板非线性特性研究

何 蕊, 罗文波, 王本利,

何 蕊, 罗文波, 王本利, 等. 随机激励下铝蜂窝夹层板非线性特性研究[J]. 航天器环境工程, 2009, 26(2): 143-146
引用本文: 何 蕊, 罗文波, 王本利, 等. 随机激励下铝蜂窝夹层板非线性特性研究[J]. 航天器环境工程, 2009, 26(2): 143-146
He Rui, Luo Wenbo, Wang Benli, et al. Nonlinear dynamic analysis of aluminum honeycomb sandwich board based on random excitation[J]. Spacecraft Environment Engineering, 2009, 26(2): 143-146.
Citation: He Rui, Luo Wenbo, Wang Benli, et al. Nonlinear dynamic analysis of aluminum honeycomb sandwich board based on random excitation[J]. Spacecraft Environment Engineering, 2009, 26(2): 143-146.

随机激励下铝蜂窝夹层板非线性特性研究

基金项目: 

国家863计划基金资助项目(2007AA702202)

Nonlinear dynamic analysis of aluminum honeycomb sandwich board based on random excitation

  • 摘要: 为研究铝蜂窝夹层板的非线性动力学特性,对铝蜂窝夹层板做不同激振量级下的随机振动试验,并作出非线性幅频图。系统的非线性频响函数的共振放大倍数随着激振量级的增加而减小,其特征与应用等效线性化及FPK法计算的带有非线性阻尼的系统理论得出的结果相似,拟合结果也表明试件的等效阻尼系数随外激励变化而变化,故得出文章中的试件带有非线性阻尼特性。铝蜂窝夹层板具有非线性阻尼特性这一结果可对航天器建模提供理论参考依据。
    Abstract: The nonlinear dynamic characteristics of aluminum honeycomb sandwich board, as a widely used compound material in spacecraft, are studied in this paper. With random vibration tests in different test levels, nonlinear frequency response functions (FRF) are obtained; and it is shown that as the excitation level increases, the FRF decreases in magnitude, and the damping ratio increases, which is consistent with the model with nonlinear damping, with FPK transform and equivalent principle method being combined. That reveals the nonlinear damping characteristics in aluminum honeycomb sandwich board. This study provides a theoretical guidance in choosing a model for a nonlinear dynamic system.
计量
  • 文章访问数: 
  • HTML全文浏览量: 
  • PDF下载量: 
  • 被引次数: 0
出版历程
  • 收稿日期:  2008-11-06
  • 修回日期:  2008-11-25

目录

    /

    返回文章
    返回