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高速重载滑滚摩擦副表面损伤的力学特性

彭波 孔文秦 贾磊 李永俊 王黎钦

彭波, 孔文秦, 贾磊, 李永俊, 王黎钦. 高速重载滑滚摩擦副表面损伤的力学特性[J]. 交通运输工程学报, 2017, 17(3): 75-82.
引用本文: 彭波, 孔文秦, 贾磊, 李永俊, 王黎钦. 高速重载滑滚摩擦副表面损伤的力学特性[J]. 交通运输工程学报, 2017, 17(3): 75-82.
PENG Bo, KONG Wen-qin, JIA Lei, LI Yong-jun, WANG Li-qin. Mechanics characteristics of surface damage on sliding-rolling friction pair under high-speed and heavy-load condition[J]. Journal of Traffic and Transportation Engineering, 2017, 17(3): 75-82.
Citation: PENG Bo, KONG Wen-qin, JIA Lei, LI Yong-jun, WANG Li-qin. Mechanics characteristics of surface damage on sliding-rolling friction pair under high-speed and heavy-load condition[J]. Journal of Traffic and Transportation Engineering, 2017, 17(3): 75-82.

高速重载滑滚摩擦副表面损伤的力学特性

基金项目: 

国家自然科学基金项目 51675120

国家973计划项目 2013CB632305

详细信息
    作者简介:

    彭波(1982-), 女, 山东郓城人, 中国运载火箭技术研究院高级工程师, 工学博士, 从事苛刻环境下摩擦副动态特性研究

  • 中图分类号: V233.45

Mechanics characteristics of surface damage on sliding-rolling friction pair under high-speed and heavy-load condition

More Information
    Author Bio:

    PENG Bo(1982-), female, senior engineer, PhD, +86-10-88537169, pbtaishan@163.com

  • 摘要: 采用有限元法建立了M50钢滑滚摩擦副的弹塑性接触模型, 在接触应力约为4.0GPa、线速度约为50m·s-1的高速重载工况下, 分析了其等效应力、剪切应力场与表层塑性变形, 研究了摩擦因数与相对滑动速度对M50钢滑滚摩擦副接触行为的影响, 并对比了M50钢双滚子滑滚试验中的表层塑性变形。计算结果表明: M50钢摩擦副的最大接触应力和椭圆接触区长、短轴长度的有限元分析结果与Hertz理论计算结果的偏差分别为2.66%、0.26%、6.43%;当摩擦因数由0.1增加到0.5时, 最大等效应力的位置由摩擦副次表层约0.5mm处逐渐向接触表面发展; 摩擦副表面发生胶合失效时的摩擦因数大于0.3, 接触表面最大等效应力大于1 700 MPa; 胶合失效发生时, M50钢摩擦副的应力和塑性应变具有特定的方向性, 表现在滑滚比分别为0.12、0.15条件下, 接触点处线速度较高的表面最大等效应力分别达到2 847、2 689 MPa, 产生较大的塑性应变, 最大值分别达到0.062、0.061, 而线速度较低的表面最大等效应力分别为2 269、2 101 MPa, 产生的最大塑性变形相对较小, 分别为0.040、0.039。

     

  • 图  1  双滚子滑滚摩擦副接触模型

    Figure  1.  Contact model of two-disk sliding-rolling friction pair

    图  2  工况1表层塑性变形

    Figure  2.  Plastic deformations of surface layers under condition 1

    图  3  工况2表层塑性变形

    Figure  3.  Plastic deformations of surface layers under condition 2

    图  4  双滚子摩擦副静态接触应力

    Figure  4.  Static contact stresses of two-disk friction pair

    图  5  摩擦因数对滑滚摩擦副等效应力场的影响

    Figure  5.  Influence of friction coefficient on Von Mises stress of sliding-rolling friction pair

    图  6  滑滚摩擦副沿深度方向的等效应力

    Figure  6.  Von Mises stresses of sliding-rolling friction pair in depth direction

    图  7  工况1时滑滚摩擦副的等效应力

    Figure  7.  Von Mises stresses of sliding-rolling friction pair under condition 1

    图  8  工况2时滑滚摩擦副的等效应力

    Figure  8.  Von Mises stresses of sliding-rolling friction pair under condition 2

    图  9  工况1时滑滚摩擦副的剪切应力

    Figure  9.  Shear stresses of sliding-rolling friction pair under condition 1

    图  10  工况2时滑滚摩擦副的剪切应力

    Figure  10.  Shear stresses of sliding-rolling friction pair under condition 2

    图  11  两种工况下滑滚摩擦副的塑性应变

    Figure  11.  Plastic strains of sliding-rolling friction pair under conditions 1, 2

    表  1  摩擦副分析工况

    Table  1.   Analysis conditions of friction pair

    下载: 导出CSV

    表  2  室温下M50钢的材料属性

    Table  2.   Material properties of M50steel at room temperature

    下载: 导出CSV

    表  3  计算结果对比

    Table  3.   Comparison of calculation results

    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-12-25
  • 刊出日期:  2017-06-25

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