基于mixed Lagrangian/Eulerian方法的轮轨滚动接触特性分析

doi:10.3969/j.issn.0258-2724.2013.05.018

基金项目:

国家自然科学基金资助项目(51005075)

铁道部科技项目(J2009G003)

江西省教育厅科学技术研究资助项目(GJJ12292)

计量
- 文章访问数:1064
- HTML全文浏览量:81
- PDF下载量:349
- 被引次数:0
出版历程
- 收稿日期:2012-01-20
- 刊出日期:2013-10-25

Analysis of Characteristics of Wheel/Rail Rolling Contact Based on Mixed Lagrangian/Eulerian Method

摘要

摘要:为了缩短有限元方法显式计算轮轨滚动接触的时间,采用mixed Lagrangian/Eulerian方法建立了轮轨滚动接触有限元模型.应用该模型对轮轨接触区的单元进行细化,计算了列车在启动、运行和制动工况下轮轨的接触特性.计算结果表明:不同工况下,轮轨滚动接触区最大Mises应力、最大接触应力和接触斑面积等法向特性变化幅度均在2%以内,但接触区纵向截面中Mises应力分布及纵向剪切应力分布有较大变化;启动和制动工况下,最大Mises应力和最大纵向剪切应力位置均比自由滚动时更接近于轮轨表面;不同工况下,摩擦力大小和方向发生变化,在列车牵引和制动工况中,摩擦力达到极限时轮轨间出现完全滑动,摩擦力方向与滑动方向相反,且不同速度等级下的纵向摩擦力变化幅度也在2%以内.
- mixed Lagrangian/Eulerian/
- 轮轨滚动接触特性/
- 蠕滑/
- 滑动
Abstract:To overcome the long time consumption of the explicit finite element calculation of wheel/rail rolling contact, the mixed Lagrangian/Eulerian method is used to establish a wheel/rail rolling contact finite element model. Through this model, the elements of the wheel/rail contact region are refined, and the wheel/rail contact characteristics are investigated in trains' starting, running, and braking conditions. The results show that under the different conditions, the maximum Mises stress, and the maximum contact stress, and the area of wheel/rail contact patches vary in the range of 2%, but the Mises stress distribution of the longitudinal section in the contact region and the longitudinal shear stress distribution vary greatly. Positions of the maximum Mises stress and the maximum longitudinal shear stress in starting and braking conditions are closer to the surfaces of wheel/rail than in free rolling. Especially it can be found that the size and direction of friction within the contact patch vary with different conditions, and pure sliding occurs when the friction reaches the limit between wheel and rail in the train traction and braking. In addition, the longitudinal friction force also varies within 2%when the train is in different speed grades.
- mixed Lagrangian/Eulerian/
- rolling contact characteristics/
- creep/
- sliding

HTML全文

参考文献 (19)

XIAO Qian, ZHOU Xinjian, WANG Chengguo. The research of large-scale finite element model of wheel/rail rolling contact based on ABAQUS[C]// The Second International Symposium. Irkutsk: Irkutsk State Transport University, 2010: 122-127.

XIAO Qian, WANG Chengguo, GUO Ge. The research of parallel computing for large-scale finite element model of wheel/rail rolling contact[C]//Proceedings of 2010 3rd IEEE International Conference on Computer Science and Information Technology. New York: IEEE Press, 2010: 254-257.

常崇义,王成国. 基于ALE有限元的轮轨稳态滚动接触分析[J]. 中国铁道科学,2009,30(2): 87-93. CHANG Chongyi, WANG Chengguo. Wheel-rail steady state rolling contact analysis based on ALE[J]. China Railway Science, 2009, 30(2): 87-93.

LIU Yongming, LIU Liming, MAHADEVAN S. Analysis of subsurface crack propagation under rolling contact loading in railroad wheels using FEM[J]. Engineering Fracture Mechanics, 2007, 74: 2659-2674.

JIANG Yanyao, SEHITOGLU H. Rolling contact stress analysis with the application of a new plasticity model[J]. Wear, 1996, 191: 35-44.

温泽峰,金学松,肖新标. 非稳态载荷对二维轮轨滚动接触应力和变形的影响[J]. 交通运输工程学报,2006,4(6): 14-19. WEN Zefeng, JIN Xuesong, XIAO Xinbiao. Influence of non-steady state loading on two-dimensional wheel-rail pure rolling contact stresses and deformation[J]. Journal of Traffic and Transportation Engineering, 2006, 4(6): 14-19.

HIBBITT D, KARLSSON B, SORENSEN P. ABAQUS theoretical manual[M]. Rhode Island: Hibbitt, Karlsson & Sorensen Inc., 1997.

BELYTSCHKO T, LIU W K, MORAN B. Nonlinear finite elements for continua and structures[M]. New York: Wiley, 2000: 60-305.

金学松,刘启跃. 轮轨摩擦学[M]. 北京:中国铁道出版社,2004: 125-148.

金学松. 轮轨蠕滑理论及其试验研究[M]. 成都:江南娱乐网页版入口官网下载安装出版社,2006: 108-151.

肖乾,王成国,周新建,等. 不同摩擦系数条件下的轮轨滚动接触特性分析[J]. 中国铁道科学,2011,32(4): 66-70. XIAO Qian, WANG Chengguo, ZHOU Xinjian, et al. Analysis on the characteristics of wheel/rail rolling contact under different friction coefficient[J]. China Railway Science, 2011, 32(4): 66-70.

LIU Qiyue, JIN Xuesong, ZHOU Zhongrong. An investigation of friction characteristic of steels under rolling-sliding condition[J]. Wear, 2005, 259(1/2/3/4/5/6): 439-444.

周新建,卢勇,王成国,等. 大功率机车轮轨接触应力计算分析[J]. 铁道机车车辆,2011,31(1): 22-26. ZHOU Xinjian, LU Yong, WANG Chengguo, et al. Calculation and analysis for high-power locomotive wheel/Rail contact stress[J]. Railway Locomotive & Car, 2011, 31(1): 22-26.

JOHNSON K L. Contact mechanics[M]. Cambridge: Cambridge University Press, 1985: 1-468.

徐灏. 疲劳强度[M]. 北京:高等教育出版社,1988: 111-129.

LIU Y, STRATMAN B, MAHADEVAN S. Fatigue crack initiation life prediction of railroad wheels[J]. International Journal of Fatigue, 2006, 28(7): 747-756.

EKBERG A, KABO E. Fatigue of railway wheels and rails under rolling contact and thermal loading-an overview[J]. Wear, 2005, 258(7/8): 1288-300.

TARAF M, ZAHAF E, OUSSOUADDI O, et al. Numerical analysis for predicting the rolling contact fatigue crack initiation in a railway wheel steel[J]. Tribology International, 2010, 43(3): 585-93.

申鹏,宋建华,李自彬,等. 轮轨黏着特性试验研究[J]. 润滑与密封,2009,34(7): 10-13,34 SHEN Peng, SONG Jianhua, LI Zibin, et al. Experimental invsetigation on wheel/rail adhesion characteristic[J]. Lubrication Engineering, 2009, 34(7): 10-13, 34.

施引文献

附加材料 (0)

访问统计

点击查看大图

计量

文章访问数:1064
HTML全文浏览量:81
PDF下载量:349
被引次数:0