基于自适应阶次边界元法的列车车轮声辐射高效计算  

Efficient Calculating of the Vibro-acoustic Behavior of Train Wheel Based on Boundary Element Method with Adaptive Order

作　　者：白栩波 张献英 Li Yue Bai Xubo;Zhang Xianying;Li Yue(Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China;Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety,Tongji University,Shanghai 201804,China;Siemens Digital Industries Software,Leuven 3001,Belgium)

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]同济大学上海市轨道交通结构耐久与系统安全重点实验室,上海201804 [3]西门子数字化工业软件,比利时鲁汶3001

出　　处：《华东交通大学学报》2024年第5期48-55,共8页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(12104341)。

摘　　要：【目的】车轮是产生轮轨滚动噪声的主要噪声源之一,对其声辐射特性的数值仿真涉及大规模声学计算。【方法】为提高车轮声辐射的计算效率,引入了自适应阶次边界元法。通过有限元法和边界元法相结合,以自由场中的车轮声辐射为研究对象,采用自适应阶次边界元法计算了车轮振动辐射声功率、标准测量点的声压以及车轮声辐射指向性,并与传统边界元法和快速多极子边界元法的计算结果及计算时间进行了对比。【结果】不同边界元法得到的声辐射结果基本一致,而自适应阶次边界元法的计算速度约为传统边界元法的36倍、快速多极子边界元法的11倍。【结论】自适应阶次边界元法计算效率远高于其他边界元方法,在对车轮高频声辐射的研究中具有显著优势以及良好的适用性。研究结果可为大规模声学计算提供参考。【Objective】Train wheel is a significant noise source in the rolling noise,and predicting its vibroacou-stic behavior involves calculating the large scale acoustic problems.To improve the computational efficiency of wheel sound radiation,this paper introduces the Boundary Element Method with Adaptive Order(BEMAO).【Method】The sound radiation of the wheel in free space was studied by using the combination of the finite ele-ment method and the boundary element method.The BEMAO was used to calculate the sound power radiated by the wheel,the sound pressure at standard measurement point,and the directivity of the wheel acoustic radiation.Comparison was then made with the corresponding results obtained by the conventional boundary element meth-od(CBEM)and the fast multipole boundary element method(FMBEM)as well as the computational time.【Re-sult】The sound radiation obtained by three different boundary element methods are basically consistent,but the BEMAO is about 36 times faster than the CBEM,and 11 times than the FMBEM.【Conclusion】The calculation efficiency of the BEMAO is obviously higher than that of other boundary element methods,and remarkable ad-vantages and good applicability are shown in studying the sound radiation from the wheel at high frequency.The outcomes of this paper can provide reference for calculations of large scale acoustic problems.

关 键 词：车轮声辐射 大规模声学计算 自适应阶次边界元法 计算效率 

分 类 号：U270.16[机械工程—车辆工程]