Influence of prestress grinding hardening residual stress on rolling contact fatigue

Abstract

The rolling contact fatigue is commonly seen in industrial applications. Studies mainly focus on fatigue evolution caused by heat treatment. However, the combined machining includes thermal-mechanical coupling and transformation. The generated residual stress can be another factor to decide contact fatigue. A sequent study is conducted to investigate the influence of residual stress on contact fatigue after prestress grinding hardening. To figure out the rolling crack initiation and propagation on residual stress surface, a united calculation combined with finite element method and analytic method is proposed. Based on the above analysis, the rolling contact fatigue can be adjusted by controlling the initial residual stress of machining surface, which is meaningful for surface anti-fatigue manufacturing with longer life span requirements.

KEYWORDS:

• Rolling contact fatigue;·prestress grinding hardening;·residual stress;·crack initiation and propagation

Disclosure statement

No potential conflict of interest was reported by the author(s).

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Additional information

Funding

This project is supported by the National Natural Science Foundation of China [grant number 52105433], the National Natural Science Foundation of China (grant number 52175383), Fundamental Research Funds for the Central Universities [N2103014] and Postdoctoral Foundation of Northeastern University [20200326], the Liaoning Province Natural Science Foundation Project [grant number 2019-ZD-0518].