Simulation study on residual stress and fatigue life of piston motor’s blind hole rolling strengthening

Feng Xue; Dasen Wang; Ning Pei; Fengming Nie; Qingtang Wu; Huan Wu

doi:10.1117/12.2666611

27 January 2023 Simulation study on residual stress and fatigue life of piston motor’s blind hole rolling strengthening

Feng Xue, Dasen Wang, Ning Pei, Fengming Nie, Qingtang Wu, Huan Wu

Proceedings Volume 12550, International Conference on Optical and Photonic Engineering (icOPEN 2022); 125501V (2023) https://doi.org/10.1117/12.2666611
Event: International Conference on Optical and Photonic Engineering (icOPEN 2022), 2022, ONLINE, China

Abstract

In order to improve the fatigue life of axial piston motor, piston holes were strengthened by inner rolling strengthening process after precision machining. Based on the principle of surface rolling, finite element simulation models of inner rolling and fatigue were established to research mechanism of residual stress and fatigue cycle, respectively. We analyzed the distribution characteristics of residual stress in hole wall and studied the influence law of different rolling process parameters on residual stress. The fatigue life of workpiece with and without residual compressive stress was compared stress life simulation. The results show that the maximum residual compressive stress of 150~210 MPa can be generated after rolling strengthening. The fatigue life was increased by about 21.4% due to residual compressive stress.

Citation Download Citation

Feng Xue, Dasen Wang, Ning Pei, Fengming Nie, Qingtang Wu, and Huan Wu "Simulation study on residual stress and fatigue life of piston motor’s blind hole rolling strengthening", Proc. SPIE 12550, International Conference on Optical and Photonic Engineering (icOPEN 2022), 125501V (27 January 2023); https://doi.org/10.1117/12.2666611

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available