Page 167 - 《应用声学》2021年第1期

第 40 卷 第 1 期 Vol. 40, No. 1
2021 年 1 月 Journal of Applied Acoustics January, 2021

⋄ 研究报告 ⋄

基于混合有限元-统计能量分析的箱梁

结构噪声特性分析 ∗

余亮亮 雷晓燕 † 罗 锟

(华东交通大学 铁路环境振动噪声教育部工程中心 南昌 330013)
摘要：为了探讨箱梁的结构噪声辐射规律，提高计算精度及效率，基于混合有限元 -统计能量分析理论，建立
1/10 箱梁有限元 -统计能量分析计算模型，并进行模态实验与声学实验验证。在此基础上进行声贡献量以及
振动传递规律分析，并与相关文献进行比较。研究结果表明：混合有限元 -统计能量分析模型不仅适用于箱梁
结构噪声分析，而且在保证计算精度的同时提高了计算效率；在随机激励下，箱梁顶板和左右翼板的声贡献量
高达 87.3%，底板和腹板的声贡献量仅为 13.7%；箱梁结构各子系统声贡献量规律与箱梁结构各子系统的振动
大小规律保持一致。
关键词：有限元 -统计能量分析模型；结构噪声；模型试验
中图法分类号: U238 文献标识码: A 文章编号: 1000-310X(2021)01-0163-10
DOI: 10.11684/j.issn.1000-310X.2021.01.020

Noise analysis of box girder structure based on hybrid finite element-statistical
energy analysis

YU Liangliang LEI Xiaoyan LUO Kun

(Engineering Research Center of Railway Environment Vibration and Noise Ministry of Education, East China Jiao tong
University, Nanchang 330013, China)

Abstract: In order to discuss the structural noise radiation law of the box girder and improve the accuracy
and calculation efficiency, based on the hybrid finite element-statistical energy analysis (FE-SEA) theory, a
1/10 box girder FE-SEA calculation model was established, and modal tests and acoustic experiments were
conducted to verify the model. On this basis, the analysis of the sound contribution and vibration transmission
law was carried out, and compared with relevant literature. The research results show that the hybrid FE-
SEA model is not only suitable for noise analysis of box girder structures, but also improves the calculation
efficiency while ensuring the accuracy of calculation. Under random excitation, the acoustic contribution of the
box girder top plate and left and right wing plates is as high as 87.3%, and that of the bottom plate and web
is only 13.7%. The vibration law of each subsystem of the box girder is consistent with the sound contribution
law of each plate of the box girder.
Keywords: Finite element-statistical energy analysis model; Structure-radiated noise; Model test

2020-05-03 收稿; 2020-07-15 定稿
国家自然科学基金项目 (51978264, 51868023), 江西省教育厅科技项目 (GJJ170357), 江西省自然科学基金项目 (20202BABL204054)
∗
作者简介: 余亮亮 (1995– ), 男, 江西九江人, 硕士研究生, 研究方向: 轨道交通环境振动与噪声。
† 通信作者 E-mail: xiaoyanlei2013@163.com