NDLI: Numerical Simulation of Fatigue Crack Growth Based on Strip Yield Model Considering Work Hardening of Materials

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Gotoh, Koji Harada, Keisuke
Copyright Year	2010
Abstract	This paper presents the improved numerical simulation of fatigue crack growth considering the crack opening / closing behaviour based on the strip yield model with the stress intensity factor weight function. The mechanical property in the primitive model corresponds to rigid-plastic material and is replaced to the elastic - perfectly plastic material in order to describe the elastic behaviour of material around a crack tip during the unloading process. However, the simulation model based on the elastic - perfect plastic material gives poor growth estimations under rapidly changing of loading histories, e.g. the spike loading. The possibility is pointed out that insufficient considerations of work hardening effect of materials lead the excess crack closure in the numerical simulations. Authors propose the improved numerical simulation fatigue crack growth considering the work hardening effect of materials in this paper. Comparison of proposed simulation results with previous ones and with measured results confirms the primacy of proposed method over previous ones.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	151
Ending Page	156
Page Count	6
File Format	PDF
ISBN	9780791849149
DOI	10.1115/OMAE2010-20726
e-ISBN	9780791838730
Volume Number	29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 6
Conference Proceedings	ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2010-06-06
Publisher Place	Shanghai, China
Access Restriction	Subscribed
Subject Keyword	Strips Work hardening Simulation results Computer simulation Simulation models Weight (mass) Elasticity Mechanical properties Fracture (materials) Plastics Fatigue cracks Stress
Content Type	Text
Resource Type	Article

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