钢铝结构连接耦合损耗因子计算方法研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (3) : 204-209.

论文

钢铝结构连接耦合损耗因子计算方法研究

林永水，吴卫国，陈景昊，周雍，周超

作者信息 +

A new method for Calculating Coupling Loss Factor of the Steel-Aluminum Junction

LIN Yong-shui，WU Wei-guo，CHEN Jing-hao，ZHOU Yong，ZHOU Chao

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文章历史 +

摘要

统计能量法已广泛用于解决高频振动与噪声问题，耦合损耗因子是其关键参数之一。研究基于统计能量法、有限元法和功率输入法，提出一种钢铝连接耦合损耗因子数值计算方法，并运用MATLAB编写了计算软件。通过对含过渡接头的T型连接结构进行数值和实验研究，验证了本方法的可靠性。这对提高钢铝混合结构的噪声预报精度及指导其结构声学设计具有重要意义。

Abstract

Statistical Energy Analysis (SEA) has become a useful technique for providing a solution to high frequency noise and vibration. Coupling loss factor (CLF) is the important parameter for SEA. Based on SEA, Finite Element Analysis (FEA) and Power Injection Method, the paper proposed a numerical calculation method of CLF for Steel-Aluminum Junction and a simulation program by MATLAB. A T-shaped plate structure connected by steel-aluminum transition junction is investigated, which is proved to be reliable by comparison with an experimental method known as Power Injection Method (PIM). In a word, it has a great significance in improving the accuracy of SEA prediction and gives useful advice to structure acoustic design.

导出引用

林永水;吴卫国;陈景昊;周雍;周超. 钢铝结构连接耦合损耗因子计算方法研究[J]. 振动与冲击, 2015, 34(3): 204-209

LIN Yong-shui;WU Wei-guo;CHEN Jing-hao;ZHOU Yong;ZHOU Chao. A new method for Calculating Coupling Loss Factor of the Steel-Aluminum Junction [J]. Journal of Vibration and Shock, 2015, 34(3): 204-209