噪声与振动控制Issue(3)：33-36,107,5.DOI:10.3969/j.issn.1006-1335.2015.03.008
基于FE-SEA混合法的铝型材振动声辐射特性预测
Sound Radiation Prediction and Control of Section Aluminum of High-speed Train’s Car-body Based on Hybrid FE-SEA Method
摘要
Abstract
The hybrid FE-SEA model was developed to predict the sound radiation of section aluminum of high-speed train’s car-body. The model was verified through the comparison of the results with those calculated by using the FE-BEM model. The effect of the viscoelastic damping technique on the sound radiation suppression was analyzed with this model. The prediction results show that the sound radiation of the section aluminum with viscoelastic damping material attached to the top and the bottom and the inner surface of the section aluminum can significantly suppress the sound radiation in the medium-and-high frequency range above 500 Hz. While the acoustic radiation efficiency does not change a lot if the viscoelastic damping material is attached to the outer surface of the section aluminum. Comparing the types of the viscoelastic damping material attachment, it is concluded that the viscoelastic damping material attached to the bottom is more economic and feasible. It is beneficial for the light car-body design. This work may provide a theoretical guidance for the design of the section aluminum for noise and vibration reduction of the car-bodies.关键词
振动与波/高速列车/中空铝型材/振动声辐射/FE-SEA混合法Key words
vibration and wave/high-speed train/hollow section aluminum/sound radiation/hybrid FE-SEA分类
交通工程引用本文复制引用
吴健,肖新标,张玉梅,圣小珍..基于FE-SEA混合法的铝型材振动声辐射特性预测[J].噪声与振动控制,2015,(3):33-36,107,5.基金项目
国家自然科学基金(51475390, U1434201)；国家863计划(2011AA11A103-2-2) （51475390, U1434201）
