高速列车波纹外地板低噪声优化设计

沈火明; 张玉梅; 肖新标; 金学松

doi:10.19818/j.cnki.1671-1637.2011.02.011

高速列车波纹外地板低噪声优化设计

doi: 10.19818/j.cnki.1671-1637.2011.02.011

1.
西南交通大学力学与工程学院，四川成都 610031
2.
西南交通大学牵引动力国家重点实验室，四川成都 610031

基金项目:

四川省科技支撑计划项目 2010GZ0226

四川省基础研究计划项目 2010JY0070

详细信息

作者简介:
沈火明（1968-），男，江苏苏州人，西南交通大学教授，工学博士，从事结构振动与控制研究

中图分类号: U211;U46
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出版历程
- 收稿日期: 2010-12-21
- 刊出日期: 2011-04-25

Low-noise optimization design of external corrugated floor for high-speed train

1.
School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
2.
Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

More Information

Author Bio:
SHEN Huo-ming(1968-), male, professor, PhD, +86-28-87600834, hmshen@126.com

摘要

摘要: 基于混合有限元-统计能量法及周期子结构原理, 建立了高速列车波纹外地板声学特性仿真模型, 根据波纹外地板结构的传递损失评价隔声性能, 分析了波纹板结构、波纹板加上板结构、波纹板加下板结构和波纹板加夹板结构在不同腹板倾角下的隔声性能。计算结果表明: 波纹板和波纹板加上板结构在各个角度的隔声量都明显高于其他两种结构; 波纹板加下板结构隔声效果最差, 波纹板加上板结构隔声效果最好, 两者在腹板倾角为55°时隔声量差值为6.9 dB。通过隔声量分析, 得出了不同频率噪声下的腹板倾角和结构的最佳组合, 为高速列车波纹外地板低噪声结构设计提供依据。
- 高速列车 /
- 环境噪声 /
- 波纹外地板结构 /
- 隔声量 /
- 混合有限元-统计能量法
Abstract: Based on the hybrid finite element and statistical energy analysis (hybrid FE-SEA) and the principle of periodic substructure, a acoustic characteristic simulation model of external corrugated floor used in high-speed train was established. According to the transmission loss of external corrugated floor structure, the sound insulation property was evaluated. Corrugated floor structure, corrugated floor structure with top plate, corrugated floor structure with bottom plate, corrugated floor structure with splint were chosen, and the sound insulation properties of the structures were analyzed under different web angles. Calculation result shows that the sound insulation losses of corrugated floor structure and corrugated floor structure with top plate are bigger than the other two structures at every angle. Corrugated floor structure with bottom plate has the worst sound insulation property, but corrugated floor structure with top plate has the best sound insulation property, and their sound insulation difference is 6.9 dB while the web angle is 55°. Through the analysis of sound insulation loss, the best combinations of external corrugated structures and web angles under different frequency noises are obtained, which can provide evidence for the low-nosie structure design of external corrugated floor for high-speed strain.
- high-speed train /
- enviroment noise /
- external corrugated floor structure /
- sound insulation loss /
- hybrid FE-SEA

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图 1 周期子结构

Figure 1. Periodic substructure

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图 2 整体尺寸和周期单元

Figure 2. Overall dimensions and periodic unit

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图 3 计算类型

Figure 3. Calculation model

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图 4 有限元模型

Figure 4. Finite element models

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图 5 混合有限元-统计能量法模型

Figure 5. Model of hybrid FE-SEA

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图 6 波纹外地板结构隔声量

Figure 6. Sound insulation losses of external corrugated floor structure

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图 7 波纹外地板加下板结构隔声量

Figure 7. Sound insulation losses of external corrugated floor structure with bottom plate

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图 8 波纹外地板加上板结构隔声量

Figure 8. Sound insulation losses of external corrugated floor structure with top plate

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图 9 波纹外地板加夹板结构隔声量

Figure 9. Sound insulation losses of external corrugated floor structure with splint

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图 10 隔声量比较

Figure 10. Comparison of sound insulation losses

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表 1 角度和尺寸

Table 1. Angles and dimensions

α/ (°)	a/mm	α/ (°)	a/mm
55	8.722 3	75	14.449 7
60	10.350 1	80	15.663 7
65	11.821 4	85	16.840 8
70	13.177 4	90	18.000 0

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