This paper presents an improved numerical simulation procedure for fatigue crack growth based on the strip yield model with a weight function. In the previous numerical model, one-dimensional bar elements plugged up the chink corresponding to the virtual crack opening displacement in the plastic zone to describe the crack wake over fatigue crack surfaces. However, this numerical simulation method gives poor growth estimations under large variable loading histories, e.g. spike overloading. It is possible that insufficient consideration of the strain hardening effect of materials leads to excess crack closure. The authors develop the numerical simulation model of fatigue crack growth by considering the strain hardening effect of materials using the modified strip yield model. Numerical simulations of fatigue crack growth under many types of loading are performed to investigate the validity of our new proposed model. Comparison of proposed simulation results with previous results and with experimental measurements confirms the superiority of the proposed method.
Skip Nav Destination
ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
July 1–6, 2012
Rio de Janeiro, Brazil
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4493-9
PROCEEDINGS PAPER
Improvement of Fatigue Crack Growth Simulation Based on the Strip Yield Model Considering the Strain Hardening Effect of Materials
Keisuke Harada
Keisuke Harada
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Koji Gotoh
Kyushu University, Fukuoka, Japan
Keisuke Harada
Kyushu University, Fukuoka, Japan
Paper No:
OMAE2012-83664, pp. 187-194; 8 pages
Published Online:
August 23, 2013
Citation
Gotoh, K, & Harada, K. "Improvement of Fatigue Crack Growth Simulation Based on the Strip Yield Model Considering the Strain Hardening Effect of Materials." Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Materials Technology; Polar and Arctic Sciences and Technology; Petroleum Technology Symposium. Rio de Janeiro, Brazil. July 1–6, 2012. pp. 187-194. ASME. https://doi.org/10.1115/OMAE2012-83664
Download citation file:
13
Views
Related Proceedings Papers
Related Articles
Plane Strain Crack Growth Models for Fatigue Crack Growth Life Predictions
J. Pressure Vessel Technol (February,1996)
Fully Plastic Solutions and Large Scale Yielding Estimates for Plane Stress Crack Problems
J. Eng. Mater. Technol (October,1976)
Numerical Simulation of Cropping
J. Appl. Mech (July,2014)
Related Chapters
Direct Observation and Mechanism of Fatigue Crack Propagation
Fatigue Mechanisms
A Novel Clustering Approach for Manets Based on Mobility
International Conference on Computer and Computer Intelligence (ICCCI 2011)
A New Formula on Fatigue Crack Propagation
International Conference on Mechanical and Electrical Technology 2009 (ICMET 2009)