An approach for fatigue crack propagation analysis by smoothed particle hydrodynamics method

Issue title: Special Issue: Memorial Issue in the Honor of Prof. Takeo Yokobori

Guest editors: Alberto Carpinteri, Yu Shouwen and Teruo Kishi

Article type: Research Article

Authors: Tazoe, Koki^a; | Tanaka, Hiroto^a | Oka, Masanori^a | Yagawa, Genki^b

Affiliations: [a] Research and Development Center, YANMAR Co., Ltd., Umegahara, Maibara, Shiga, Japan | [b] The University of Tokyo and Toyo University, Akatsutsumi, Setagaya, Tokyo, Japan

Correspondence: [*] Corresponding author. Tel.: +81 749 52 8406; Fax: +81 749 52 6346; E-mail: [email protected]

Abstract: In this study, a smoothed particle hydrodynamics (SPH) method for analyzing fatigue crack propagation was developed. In the simulation program, a crack is modeled to propagate virtually in particles based on the linear fracture mechanics and the Paris-Erdogan Law. This is realized by removal of one particle per analysis cycle. The SPH simulation in the case of the half elliptical surface crack propagation has given a smooth crack shape history, which is similar to the fatigue test result.

Keywords: Smoothed particle hydrodynamics, fatigue, crack propagation, fracture mechanics

DOI: 10.3233/SFC-190242

Journal: Strength, Fracture and Complexity, vol. 12, no. 2-4, pp. 127-133, 2020