开孔结构内压传递方程的孔口特征参数识别

余世策;李庆祥;徐海巍;楼文娟

振动与冲击 ›› 2012, Vol. 31 ›› Issue (5) : 50-54.

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PDF(1340 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (5) : 50-54.
论文

开孔结构内压传递方程的孔口特征参数识别

  • 余世策1,李庆祥2,徐海巍1,楼文娟1
作者信息 +

Orifice characteristic parameters identification of internal pressure transfer equation for structure with opening

  • yu shi-ce1, li qing-xiang2 , xü hai-wei1, lou wen-juan1
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摘要

对开孔结构内压传递方程的孔口特征参数识别进行理论和实验研究。基于通用双参数内压传递方程,探讨了在正弦波激励下考虑非线性阻尼的孔口特征参数提取方法,并采用时程计算方法对参数提取的精度进行了详细分析,设计并制作了专用的实验装置用于孔口特征参数提取。研究结果表明,基于正弦波激励的孔口特征参数提取方法在共振峰附近的提取精度较为可靠,而发生共振反应是保证孔口参数提取精度的前提。

Abstract

Orifice characteristic parameters identification method of internal pressure transfer equation for structure with opening is studied theoretically and experimentally. Based on the general internal pressure transfer equation considering the nonlinear damping characteristic with two parameters, the orifice characteristic parameters identification method of internal pressure transfer equation for structure with opening excited by sinusoidal wave is investigated. Using time-history method the accuracy of parameters extraction is analyzed in detail, and a special experimental device is developed for orifice characteristic parameters extraction. The results show that extraction accuracy of the extraction method based on the sinusoidal excitation in the vicinity of the resonance peak is reliable, and the reaction of resonance is to ensure the accuracy of the extraction of the orifice characteristic parameters.

关键词

开孔结构 / 内压传递方程 / 孔口特征参数 / 专用实验装置 / 正弦波

Key words

structure with opening / internal pressure transfer equation / orifice characteristic parameters / special experimental device / sinusoidal wave

引用本文

导出引用
余世策;李庆祥;徐海巍;楼文娟. 开孔结构内压传递方程的孔口特征参数识别[J]. 振动与冲击, 2012, 31(5): 50-54
yu shi-ce;li qing-xiang;xü hai-wei;lou wen-juan. Orifice characteristic parameters identification of internal pressure transfer equation for structure with opening[J]. Journal of Vibration and Shock, 2012, 31(5): 50-54

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