Surplus Fatigue Life Prediction of Diesel Engine Piston by the Equivalent J-Integral Approach

Abstract:

Three dimension temperature fields and stress-strain fields of the 6110-type diesel engine piston were analyzed by using the program ANSYS. The simulating tests of crack propagation under high temperature low cycle fatigue were carried out with pre-crack notched specimens. According to the theory of high temperature strength and fracture, the equivalent J-integral range ΔJf were induced to predict the surplus fatigue life of diesel engine piston. It was concluded that this approach is suitable and provides valuable reference for designers of diesel engine.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 2305-2308
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.2305
• Online since: November 2011
• Authors: Wen Xiao Zhang, Guo Dong Gao, Guang Yu Mu
• Keywords: Crack Propagation, Diesel Engine, Fatigue, Ĵ-Integral, Piston, Surplus Life

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