Title: Fatigue life estimation of metal materials based on finite element analysis

Authors: Junfeng Wu; Lei Wang; Bing Chen

Addresses: Faculty of Engineering, Huanghe Science and Technology University, Zhengzhou, 450063, China; Henan Engineering Research Center of Acoustic Meta-Structure, Huanghe Science and Technology University, Zhengzhou, 450063, China ' Faculty of Engineering, Huanghe Science and Technology University, Zhengzhou, 450063, China; Henan Engineering Research Center of Acoustic Meta-Structure, Huanghe Science and Technology University, Zhengzhou, 450063, China ' Faculty of Engineering, Huanghe Science and Technology University, Zhengzhou, 450063, China; Henan Engineering Research Center of Acoustic Meta-Structure, Huanghe Science and Technology University, Zhengzhou, 450063, China

Abstract: The fatigue life of metal materials determines the application performance of metal materials. A fatigue life estimation method of metal materials based on finite element analysis is proposed. The finite element model of metal materials is constructed through the steps of material property setting, mesh generation, etc. The influence mechanism of stress concentration degree, metal material size, and other factors is analysed; the fatigue damage evolution process of metal materials is simulated using a finite element model; the cyclic stress-strain characteristics of metal materials are extracted; the current fatigue damage accumulation state of metal materials is identified; and the estimation results of fatigue life of metal materials are obtained from two aspects of crack formation life and crack growth life. The experimental results show that the estimation error of this method is reduced by about 9.17 h, and the running speed is significantly improved.

Keywords: finite element analysis; metal materials; fatigue life estimation; cyclic stress-strain characteristics; crack formation life; crack growth life.

DOI: 10.1504/IJMPT.2024.136847

International Journal of Materials and Product Technology, 2024 Vol.68 No.1/2, pp.86 - 106

Received: 13 Jul 2023
Accepted: 06 Nov 2023
Published online: 22 Feb 2024 *

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