小半径曲线钢轨非对称打磨目标型面优化

王亮; 向伟彬; 刘宏达; 罗显光

doi:10.13433/j.cnki.1003-8728.20200163

小半径曲线钢轨非对称打磨目标型面优化

doi: 10.13433/j.cnki.1003-8728.20200163

王亮^1,,
向伟彬¹,
刘宏达^{2, 3, ,},
罗显光^{2, 3}

1.
南宁轨道交通集团有限责任公司运营分公司, 南宁 530029
2.
大功率交流传动电力机车系统集成国家重点实验室, 湖南株洲 412001
3.
中车株洲电力机车有限公司产品研发中心, 湖南株洲 412001

基金项目:

国家重点研发计划“先进轨道交通”重点专项 2018YFB120160403

详细信息

作者简介:
王亮(1982-), 高级工程师, 硕士研究生, 研究方向为城市轨道交通运维生产及技术管理, 282652189@qq.com

通讯作者:
刘宏达，工程师，博士，932368911@qq.com

中图分类号: TG156
计量
- 文章访问数: 226
- HTML全文浏览量: 63
- PDF下载量: 24
- 被引次数: 0
出版历程
- 收稿日期: 2019-11-28
- 刊出日期: 2021-06-01

Target Profile Optimization of Asymmetrical Grinding for Rail with Sharp-radius Curve

WANG Liang^1
,,
XIANG Weibin¹,
LIU Hongda^{2, 3
, ,},
LUO Xianguang^{2, 3}

1.
Nanning Rail Transit Group Co., Ltd., Operation Branch, Nanning 530029, China
2.
The State Key Laboratory of Heavy Duty AC Drive Electric Locomotive Systems Integration, Zhuzhou 412001, Hu′nan, China
3.
R & D Centre, CRRC Zhuzhou Locomotive Co., Ltd., Zhuzhou 412001, Hu′nan, China

摘要

摘要: 小半径曲线钢轨非对称打磨能够减少轨头侧磨，增加轮对导向能力，对非对称打磨目标型面优化，能够提高打磨质量，进一步改善轨道车辆通过小半径曲线时的轮轨接触性能和轮对导向能力。利用NURBS曲线构建了基于可调权因子的钢轨非对称打磨区域轨头曲线参数化模型，建立了以轮轨接触性能和轮对曲线通过能力Kriging代理模型为目标函数的非对称打磨目标型面多目标优化模型。采用NSGA-Ⅱ算法对可调权因子进行多目标优化，得到了优化的钢轨非对称打磨目标型面。优化结果表明，车辆的轮轨接触性能和轮对曲线通过能力得到明显改善。
- 非对称打磨 /
- 小半径曲线 /
- 目标型面优化 /
- 接触应力 /
- Kriging代理模型
Abstract: Asymmetric grinding for rail with sharp-radius curve can reduce rail head side grinding, increase wheelset guiding ability; optimizing the target surface of asymmetric grinding can improve grinding quality and further improve wheel-rail contact stress concentration and wheel-set guiding ability of rail vehicles when passing through sharp-radius curve. Based on NURBS curve, a parametric model of rail head curve in asymmetric grinding area was constructed based on adjustable weight factor, and a multi-objective global optimization model of asymmetric grinding target profile was established based on Kriging surrogate model of wheel-rail contact performance and wheel-pair curve passing ability. With the NSGA-Ⅱ algorithm based on multi-objective global optimization of adjustable power factor, the optimization target profile of the rail asymmetrical grinding is obtained. The optimization results show that the wheel-rail contact stress concentration and the wheel-set curve passing ability of the vehicle are obviously improved.
- asymmetrical grinding /
- sharp-radius curve /
- global profile optimization /
- contact stress /
- Kriging surrogate model

HTML全文

图 1 基于3次NURBS曲线的轨头曲线参数化模型

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图 2 小半径曲线非对称打磨区域

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图 3 w₁₆、w₁₇和w₁₈不同取值时钢轨打磨区域轨头曲线对比

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图 4 接触应力σ和滚动半径差Δr的Kriging代理模型

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图 5 基于NSAG-Ⅱ的可调权因子寻优插值过程

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图 6 可调权因子w₁₆、w₁₇和w₁₈的Pareto非劣解

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图 7 优化的非对称打磨目标型面

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图 8 优化前后导向轮对轮轨接触性能与导向能力对比

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表 1 打磨区域可调权因子及其取值范围

序号	可调权因子	当前值	上限	下限
1	w₁₆	1	2	0
2	w₁₇	1	2	0
3	w₁₈	1	2	0

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表 2 Kriging代理模型训练样本

序号	w₁₆	w₁₇	w₁₈	非对称打磨性能指标
序号	w₁₆	w₁₇	w₁₈	σ	Δr
1	1.952 49	0.541 903	0.318 814	1 921.74	8.813
2	1.308 123	0.232 827	0.142 763	1 980.65	8.947
3	1.183 405	1.680 745	1.809 266	2 097.39	8.251
⋮	⋮	⋮	⋮	⋮	⋮
29	0.288 095	0.754 156	1.122 051	2 277.86	8.237
30	1.536 933	1.828 776	0.849 437	2 018.11	8.593

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表 3 可调权因子初始值与优化结果

可调权因子	初始值	优化结果
w₁₆	1	0.910
w₁₇	1	0.324
w₁₈	1	0.580

下载: 导出CSV

参考文献(16)

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