Page 26 - 201901

第 38 卷 第 1 期 Vol. 38, No. 1
2019 年 1 月 Journal of Applied Acoustics January, 2019

⋄ 研究报告 ⋄

利用混合FE-SEA方法的前围隔声性能优化设计 ∗

唐荣江 1 李申芳 1† 郑伟光 1 童 浙 1 黄 莉 2
(1 桂林电子科技大学机电工程学院 桂林 541004)
(2 东风柳州汽车有限公司商用车技术中心 柳州 545005)

摘要 为了提升某重型商用车前围的隔声性能，建立了用于分析前围传递损失的有限元 -统计能量分析
(FE-SEA) 模型。针对前围结构复杂的特点，依据 FE-SEA 模型建模原则，提出了通过在表面创建声腔来确保
能量在模型中的正确传递路径。将仿真结果与测试值对比，二者误差小于 1.6 dB(A)，验证了 FE-SEA 方法的
准确性。用吸声材料与隔声材料复合设计前围声学包，采用正交试验法对前围声学包进行优化设计并对各个
试验方案进行仿真计算。对仿真结果进行极差分析与方差分析，选出了在传递损失、重量和厚度三方面达到
最佳平衡的声学包：毛毡 (10 mm)+ EPDM 隔声垫 (2 mm)。结果表明，优化后的前围传递损失在测试频率
315 Hz∼2000 Hz 范围内最小提升了 3.8 dB(A)，最大提升了 7 dB(A)，前围的隔声性能得到较大的提升。
关键词 有限元 -统计能量分析，隔声性能，传递损失，极差分析，方差分析
中图法分类号: U467.3 文献标识码: A 文章编号: 1000-310X(2019)01-0022-07
DOI: 10.11684/j.issn.1000-310X.2019.01.004

Optimization design of sound insulation property in front wall using

hybrid FE-SEA method

TANG Rongjiang 1 LI Shenfang 1 ZHENG Weiguang 1 TONG Zhe 1 HUANG Li 2

(1 School of Mechanical & Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China)
(2 R&D Center of Commercial Vehicle, Dong Feng Liuzhou Automobile Co., Ltd., Liuzhou 545005, China)

Abstract In order to improve the sound insulation performance of the front wall of a heavy commercial
vehicle, a finite element-statistical energy analysis (FE-SEA) model was developed to analyze the front wall
transmission loss. In view of the complex characteristics of the front wall structure, according to the FE-SEA
model modeling principle, a method of ensuring the correct transmission path of energy in the model by creating
acoustic cavity on the surface is proposed. The simulation results are compared with the test values, the error
is less than 1.6 dB(A), which verifies the accuracy of the FE-SEA method. The acoustic package is designed
by using the sound absorbing material and the sound insulation material. The acoustical packet of the front
wall is optimized by the orthogonal test method and the simulation analysis is carried out. Based on the range
analysis and variance analysis of the simulation results, the acoustic package which achieves the best balance
in transmission loss, weight and thickness is selected: Felt (10 mm) + EPDM sound barrier mat (2 mm). The
transmission loss of the front wall, after optimization, in the test frequency of 315 Hz ∼ 2000 Hz the minimum
increase of 3.8 dB(A), the maximum increase of 7 dB(A). The sound insulation performance of the front wall
is greatly improved.
Key words Finite element-statistical energy analysis, Sound insulation property, Transmission loss, Range
analysis, Variance analysis
2018-05-19 收稿; 2018-07-23 定稿
广西自然科学基金项目 (2015GXNSFBA139232)
∗
作者简介: 唐荣江 (1986- ), 男, 广西桂林人, 博士, 副教授, 研究方向: 车内噪声与振动控制。
† 通讯作者 E-mail: sanford_lee@163.com