Effect of slip to roll ratio on cyclic plastic deformation response at subsurface during rolling contact fatigue

Forces in Mechanics

Mayank Tiwari¹  Xiao Zhongmin²  Surajit Kumar Paul² 

[1]Corresponding author.

[2]Mechanical Engineering Department, Indian Institute of Technology Patna, Bihta, Patna 801106, India

关键词: Rolling contact fatigue;    Slip;    Ratcheting;    Cyclic plastic deformation;   

DOI  :  

来源: DOAJ

【 摘 要 】

The objective of this investigation is to evaluate the cyclic plastic deformation response at the subsurface during rolling contact fatigue (RCF) under the conditions of pure rolling and rolling-sliding. The finite element simulation results indicate that the slip-to-roll ratio (SRR)has an immense effect on the cyclic plastic deformation evolution at the subsurface during RCF. At SRR of 0% (pure rolling), symmetric shear stress cycling is evident at the subsurface, and as a result plastic shakedown takes place. On the other hand, at SRR of 5% (rolling-sliding), asymmetric shear stress cycling is noticed at the subsurface, and consequently ratcheting i.e. progressive accumulation of shear strain is evident. Rolling-sliding results in the shear flow of the subsurface material along the sliding direction.

【 授权许可】

Unknown