• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (12): 42-48.doi: 10.3901/JME.2018.12.042

• 特邀专栏:大国重器:复兴之路上的轨道交通技术 • 上一篇    下一篇

高速列车制动盘制动过程的有限元模拟及表面划伤对应力场的影响研究

孟繁辉1, 刘艳2, 吴影2, 马元明2, 陈辉2   

  1. 1. 中车长春轨道客车股份有限公司 长春 130062;
    2. 西南交通大学材料科学与工程学院 成都 610031
  • 收稿日期:2017-03-05 修回日期:2017-12-05 出版日期:2018-06-20 发布日期:2018-06-20
  • 通讯作者: 刘艳(通信作者),女,1985年出生,博士,硕士研究生导师。主要研究方向为热喷涂、激光熔敷等表面工程。E-mail:liuyanzt@163.com
  • 作者简介:孟繁辉,男,1982年出生。主要研究方向为制动。E-mail:mengfanhui@cccar.com
  • 基金资助:
    国家重点研发计划(2016YFB1200403)和国家自然科学基金(51474178)资助项目。

Research on Finite Element Simulation of Braking Process of High Speed Train Brake Disc and Influence of Surface Scratch on Stress Field

MENG Fanhui1, LIU Yan2, WU Ying2, MA Yuanming2, CHEN Hui2   

  1. 1. CRRC ChangChun Railway Vehicles Co., Ltd., Changchun 130062;
    2. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031
  • Received:2017-03-05 Revised:2017-12-05 Online:2018-06-20 Published:2018-06-20

摘要: 在高寒环境下高速列车制动盘由于外界硬质颗粒随着冰雪包裹进入制动盘和闸片而导致划伤是制动盘的主要失效形式,因此对制动盘的制动过程进行有限元模拟分析有助于辅助研究和解决制动盘失效问题,而针对数值模拟划伤的产生对制动盘制动性能的影响规律国内外鲜有研究。采用ABAQUS软件中的子模型技术研究了划伤位置、深度和缺口角度对铸钢制动盘紧急制动过程中的温度场及应力场分布的影响。研究结果表明:在相同的缺口圆角半径下(r=0.1 mm),对制动盘最大等效应力的影响程度为划伤深度 > 划伤位置 > 缺口角度。最大等效应力随着划伤深度的增大而增加,但在划伤深度一定的条件下,最大等效应力对缺口角度的敏感度较低。在划伤处于半径为247.5 mm,缺口角度为30°,当划伤深度为3 mm时,最大等效应力超过常温时制动盘材料的屈服强度。

关键词: 高寒制动盘, 划伤, 温度场, 应力场

Abstract: Scratch is the main failure form of the brake disc in the alpine environment of high-speed train. The braking process of brake disc is simulated by finite element method, which contributes to study and solution of the brake disc failure problem. However, the effect of scratch on performance of the brake disc is rarely studied. The influence of the position, depth and notch angle on the temperature field and stress field of the brake disc during emergency braking was studied by using the sub model technique in ABAQUS software. The results showed that under the same fillet radius (r=0.1 mm), the influence degree of the maximum equivalent stress of the brake disc was the depth of the scratch > scratch position > notch angle. The maximum equivalent stress increased with the increase of the depth of the scratch, while the scratch depth reached a certain, the maximum equivalent stress of the brake disc had low sensitivity to notch angle. The maximum equivalent stress exceeded the yield strength of the brake disc material when the scratch was in the radius of 247.5 mm, notch angle 30° and the depth was 3 mm.

Key words: brake disc in the alpine environment, scratch, stress field, temperature field

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