• ISSN 0258-2724
  • CN 51-1277/U
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Volume 21 Issue 3
Jun.  2008
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Article Contents
ZHU Chengjiu, CHEN Mengcheng, YU Huiqin. Surface Crack Problem of Half Space under Rolling Load[J]. Journal of Southwest Jiaotong University, 2008, 21(3): 356-360.
Citation: ZHU Chengjiu, CHEN Mengcheng, YU Huiqin. Surface Crack Problem of Half Space under Rolling Load[J]. Journal of Southwest Jiaotong University, 2008, 21(3): 356-360.

Surface Crack Problem of Half Space under Rolling Load

  • Received Date: 26 Sep 2007
  • Publish Date: 25 Jun 2008
  • To simplify the calculations of wheel-rail contact force and governing equations,a surface crack problem in a semi-infinite space was reduced to solving a set of hyper-singular integral equations with displacement jumps as unknown functions.The boundary element method was used in numerical analyses to disperse the integral equations,and a special numerical treatment for the hyper-singular integrals was proposed.Finally,the surface crack problem in a semi-infinite space with or without internal oil infiltration between crack surfaces under rolling load was discussed.The research result shows that oil infiltration will accelerate the propagation of surface cracks.

     

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  • KAPOOR A,FRANKLIN F J,WANG S K.Surface roughness and plastic flow in rail wheel contact[C] ∥Proceeding of the 5th International Conference on Contact Mechanics and Wear of Wheel/Rail System.Tokyo:[s.n.] ,2000:321-328.[2] KLAUS K.轮轨接触力学的最新发展[J].国外铁道车辆,2002,39(5):27-33.KLAUS K.The latest development of wheel-rail contact mechanics[J].Foreign Rolling Stock,2002,39(5):27-33.[3] 金学松,沈志云.轮轨滚动接触力学的发展[J].力学进展,2001,31(1):33-46.JIN Xuesong,SHEN Zhiyun.Development of rolling contact mechanics of wheel/rail systems[J].Advances in Mechanics,2001,31(1):33-46.[4] SMITH J O,LIU C K.Stress due to tangential and normal loads on an elastic solid with application to some contact stress problems[J].Journal of Applied Mechanics,1953,20(2):157-166.[5] 陳夢成,野田尚昭.三次元異種接合弹性体中に存在すゐ微小き裂による応力場[J].機械の研究,2003,55(5):567-578.CHEN Mengcheng,NODA Naoaki.Stress fields due to cracks in three-dimensional dissimilar materials[J].Science of Machine,2003,55(5):567-578.[6] 秦太验.三维断裂力学的有限部积分-边界元法研究[D].上海:上海交通大学工程力学系,1993.[7] 陈梦成.两相材料界面附近(含界面)三维断裂力学问题的超奇异积分方程方法[D].上海:上海交通大学工程力学系,1997.[8] 周维垣,肖洪天,吴劲松.三维间断位移法及强奇异和超奇异积分的处理方法[J].力学学报,2002,34(5):645-651.ZHOU Weiyuan,XIAO Hongtian,WU Jinsong.Three-dimensional discontinuous displacement method and the strongly singular and hypersingular integrals[J].Acta Mechanica Sinica,2002,34(5):645-651.[9] 江晓禹,金学松.轮轨间的液态介质和表面微观粗糙度对接触表面疲劳损伤的影响[J].机械工程学报,2004,40(8):18-23.JIANG Xiaoyu,JIN Xuesong.Influence of liquid and micro-roughness between wheel and rail on the fatigue damage of contact surface[J].Chinese Journal of Mechanical Engineering,2004,40(8):18-23.
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