开孔结构内压传递方程孔口特征参数提取方法研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (2) : 56-61.

论文

开孔结构内压传递方程孔口特征参数提取方法研究

徐海巍，余世策，楼文娟

作者信息 +

Orifice Characteristic Parameters Identification method study of internal pressure transfer equation for opening structures

XU Hai-wei ,YU Shi-ce ,LOU Wen-juan

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文章历史 +

摘要

对开孔结构内压传递方程孔口特征参数的影响因素和识别方法进行了系统的理论和实验研究。基于双参数内压传递方程，采用专门的实验设备考察了正弦外压的幅值和频率对于孔口特征参数的影响，从而由简谐荷载激励下参数的求解方法推广到随机荷载作用的情况。通过与不同开孔条件下参数最优解的比较来验证上述理论的可靠性，同时对该参数预测方法可能产生的误差进行了分析并给出相应的解决方法。研究结果表明本文提出的方法能较准确的预测随机荷载作用下的孔口特征参数CI和CL值。

Abstract

Both theoretical study and experiment were carried out to identify Orifice characteristic parameters in internal pressure transfer equation for opening structures as well as to find out load factors that affect them。Based on the general internal pressure transfer equation with two parameters, special device was used to investigate effects of amplitude and frequency of external load on those parameters. Then, identification method used to estimate characteristic parameters under excitation of outer harmonic load was applied to generalize an new way suitable for condition of random load. By comparing to optimum solution of the parameters in different opening conditions, the reliability of above theory can be examined. At meanwhile, error may caused by this evaluation method was explained and corresponding solution was proposed. The research showed that this new identification method can predict the Orifice characteristic parameters CI and CL accurately.

导出引用

徐海巍;余世策;楼文娟. 开孔结构内压传递方程孔口特征参数提取方法研究[J]. 振动与冲击, 2013, 32(2): 56-61

XU Hai-wei;YU Shi-ce;LOU Wen-juan. Orifice Characteristic Parameters Identification method study of internal pressure transfer equation for opening structures[J]. Journal of Vibration and Shock, 2013, 32(2): 56-61