摘要
讨论了水下结构振动模态试验理论，采用双梁式数学模型和多点正弦适调力法，研究了复合体结构在空气和水中的模态特性以及流体对复合体的耦联作用，测量了复合体结构干、湿模态参数。研究表明流体对结构振动的主要影响是附连水质量，并确定了复合体与流体耦合模态特性，对水下发射导弹的研制具有重要意义。试验还证明在空气中的模态试验分析方法与技术适用于湿模态试验。
In this paper,modal test theory of structure vibration in water is discussed.Modal characteristics of complex body structure in air and in water as well as the coupling effect of fluid on complex body are investigated by using bi beam mathematical model and multi point appropriate force test method.The research result shows that this modal test is important for cruise missile design and development.
出处
《导弹与航天运载技术》
1997年第4期23-29,共7页
Missiles and Space Vehicles
关键词
振动
模态分析
结构耦合试验
水下发射导弹
Modal vibration test, Modal analysis, Structure coupling test, Structural response.
