摘要
统计能量分析方法适于解决高频高模态密度的复杂动力学问题。采用该方法对25型铁路客车进行研究。用模态相似群法建立整车统计能量分析模型,仿真预测客车内场噪声的分布情况和噪声的主要传播路径,进而提出降低车内噪声的措施,尽管得出的是相对的结果,但是这些结论可以使设计者在设计初期考虑噪声指标成为可能。
Statistical energy analysis(SEA)is suitable for solving the complex dynamic problems in high frequency and high vibration-mode density domain.By using SEA method,the passenger train of model 25 is studied.At first,the model of vehicles for SEA is established with mode-similarity-group method.Then,distribution of internal noise of the vehicle and its main transmission path are simulated.Finally,the measures for internal noise reduction are proposed.Although the obtained results are rough,the conclusion based on the results makes it possible to consider the noise-reduction requirement in the initial design stage.
作者
王国顺
张旭
赵亮
李宝良
Wang Guo-shun;Zhang Xu;Zhao Liang;LI Bao-liang(Dalian Jiaotong University,Dalian Liaoning 116028,China)
出处
《噪声与振动控制》
CSCD
北大核心
2009年第4期85-87,共3页
Noise and Vibration Control
关键词
声学
统计能量分析
噪声
传递路径
acoustics
statistical energy analysis(SEA)
noise
transmission path
