摘要
借助CAD/CAE仿真软件分别建立无内装地铁A型车声学有限元模型与含内装地铁A型车声学有限元模型。利用多体动力学软件分析获得车体频域激励载荷并加载在车体上,计算车体在模拟运行时的频率响应。以车体板件频率响应位移振动结果作为声学激励,计算车内噪声分布。通过对两者的结果进行对比,研究分析内装结构对车内噪声的影响。
By using the CAD/CAE simulation software, an acoustic finite element model of type-A metro vehicle is es- tablished separately with and without interior equipment. The force excitation in frequency domain is applied on the car body, and calculated by multi-body dynamics software. Based on the displacement vibration response to body panel frequency acoustic excitation, the distribution of interior noise is calculated, the results of both vehicles with and without interior structures are compared, the influences of the interior structure on the inside noise are analyzed.
出处
《城市轨道交通研究》
北大核心
2012年第12期50-54,共5页
Urban Mass Transit
关键词
地铁A型车
内装结构
振动
噪声
metro type-A vehicle
interior structure
vibra-tion
noise
