| 柳拥军,刘晓芳.基于断面形状优化的地铁车轮减振降噪研究[J].计算力学学报,2009,26(3):369~373 |
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| 基于断面形状优化的地铁车轮减振降噪研究 |
| Optimizing cross-sectional shape of subway wheel to decrease vibration and noise |
| 投稿时间：2008-08-08 |
| DOI：10.7511/jslx20093015 |
| 中文关键词: 地铁车轮 有限元模型 优化设计 遗传算法 振动 噪音 |
| 英文关键词:subway wheel FEM optimal design Genetic Algorithms vibration noise |
| 基金项目:国家自然科学基金(50475059)资助项目. |
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| 摘要点击次数: 1401 |
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| 中文摘要: |
| 以降低地铁车辆在运行中产生的轮轨接触噪声为目的,将结构动力优化方法运用于地铁车轮断面外形设计,建立了地铁车轮振动噪声最优化设计的数学模型,编制了相应的算法程序。以我国某地铁车轮为例,给出了以车轮断面外形几何参数为设计变量、车轮结构振动辐射噪声值最小为目标函数的优化计算实例,得到了车轮断面外形几何参数在可行域内的最优解。结果表明,该优化设计方法是成功的,可以有效地降低车轮因振动而产生的噪声。 |
| 英文摘要: |
| In this paper, with the purpose of reducing wheel rail contact noise emitted from subway vehicle travel, the Structural Dynamic Optimum Design theory was introduced to the Cross-sectional shape design of Subway wheel. A mathematical model was established and an effective algorithm was compiled as well. The objective of the optimization method was to find a design of the selected railway wheel, which without the use of damping or tuning devices, emits less vibration noise compared to the original design. The optimization method used, was based on Genetic Algorithms (GAs). GAs are a robust optimization method that performs regardless of the optimization problem. A FEM model of the wheel was employed, and ANSYS was utilized running in batch mode for the calculation of the objective function values of the population of each generation. Taken the wheel of a subway car as an example, geometric parameters of wheel Cross-sectional shape were taken as the design variables, while the minimal noises emitted from wheel structural vibration was considered as the objective function. The optimal geometric parameter of wheel Cross-sectional shape in feasible field was presented. The results showed that this optimal design method is successful, which can reduce noises emitted from wheel vibration to a great extent. |
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