S型辐板车轮声辐射优化设计

刘林芽; 张斌; 邵文杰; 吕锐

S型辐板车轮声辐射优化设计

1.
华东交通大学铁路环境振动与噪声教育部工程研究中心, 江西南昌 330013
2.
隔而固(青岛)结构设计事务所有限公司, 山东青岛 266108
3.
广州市地下铁道总公司, 广东广州 510310

基金项目:

国家自然科学基金项目 51268014

江西省主要学科学术和技术带头人培养计划项目 2010DD00900

详细信息

作者简介:
刘林芽(1973-), 男, 江西樟树人, 华东交通大学教授, 工学博士, 从事铁路环境振动与噪声研究

中图分类号: U270.331
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- 被引次数: 0
出版历程
- 收稿日期: 2013-06-18
- 刊出日期: 2013-10-25

Optimization design of acoustic radiation for S-form web plate wheel

1.
Engingeering Research Center of Railway Environment Vibration and Noise of Ministry of Education, East China Jiaotong University, Nanchang 330013, Jiangxi, China
2.
GERB(Qingdao)Structural Design Co., Ltd., Qingdao 266108, Shandong, China
3.
Guangzhou Metro Corporation, Guangzhou 510310, Guangdong, China

More Information

Author Bio:
LIU Lin-ya(1973-), male, professor, PhD, +86-791-87045115, lly1949@163.com

摘要

摘要: 为了降低铁路列车车轮在运行中产生的振动噪声, 将结构动力优化原理应用于车轮结构截面优化设计中, 利用轮轨动力学有限元数值模拟和边界元声学模拟相结合的方法, 建立以车轮结构声辐射功率为目标函数的铁路列车低噪声车轮声辐射优化模型, 运用结构振动声辐射优化理论与多参数高效寻优的遗传算法进行求解, 实现低噪声车轮的声辐射优化设计。通过对优化车轮和标准车轮的振动声辐射对比分析发现, 优化车轮较标准车轮在辐板处的振动减小最明显, 最大振动加速度幅值由209.2 m·s^-2减小为194.6 m·s^-2, 优化车轮声辐射功率较标准车轮声辐射功率在大部分频段上均有所减小, 在1 200 Hz与3 200 Hz处降低比较明显, 分别达到2.31 dB和2.42 dB, 说明利用遗传算法对铁路列车车轮进行最优化设计是有效的、可行的, 给铁路列车减振降噪提供了一种途径。
- 车辆工程 /
- 车轮优化设计 /
- 轮轨动力学 /
- 遗传算法 /
- 有限元法 /
- 边界元法 /
- 声辐射
Abstract: In order to reduce the vibration noise produced by the wheels of running train, wheel structure dynamics optimization principle was applied to wheel structure section optimization design. By means of finite element numerical simulation method and boundary element acoustic simulation method, railway train low-noise wheel acoustic radiation optimizationmodel, which took wheel structure acoustic radiation power as objective function, was built. Using structure vibration acoustic radiation optimization theory and multi-parameter highly efficient optimization GA(genetic algorithm)method, the solution of model was programed successfully. Compared to standard wheel, optimized wheel plate vibration reduction is more obvious, for which the maximum vibration acceleration amplitude reduces from 209.2 m·s^-2 to 194.6 m·s^-2. According to wheel acoustic radiation power, optimized wheel acoustic radiation power decreases within most frequency ranges. The most obvious reductions are 2.31 dB and 2.42 dB at 1 200 Hz and 3 200 Hz, respectively. Analysis result indicates that it is available to optimize wheel by GA, and it provides a way for the vibration and noise reduction of vehicle.
- vehicle engineering /
- optimization design of wheel /
- wheel/rail dynamics /
- genetic algorithm /
- finite element method /
- boundary element method /
- acoustic radiation

HTML全文

图 1 轮轨垂向力-时间曲线

Figure 1. Vertical force-time curve of wheel-rail

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图 2 S型辐板车轮截面尺寸

Figure 2. Sectional sizes of S-form web plate wheel

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图 3 车轮有限元模型

Figure 3. FEM of wheel

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图 4 节点与面积

Figure 4. Nodes and areas

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图 5 车轮优化设计变量

Figure 5. Optimization design variables of wheel

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图 6 遗传算法流程

Figure 6. Flow of genetic algorithm

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图 7 进化状态

Figure 7. Evolution situation

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图 8 车轮响应提取点

Figure 8. Wheel response extraction points

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图 9 踏面振动加速度对比

Figure 9. Comparison of tread vibration accelerations

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图 10 轮辋振动加速度对比

Figure 10. Comparison of rim vibration accelerations

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图 11 辐板振动加速度对比

Figure 11. Comparison of web plate vibration accelerations

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图 12 车轮边界元模型

Figure 12. Boundary element model of wheel

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图 13 辐射声功率级对比

Figure 13. Comparison of sound powers

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表 1 目标函数计算结果

Table 1. Calculation result of objective function

下载: 导出CSV

参考文献(16)

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