Predicting Fatigue Crack Initiation Life of Plate-Like Component by Coupied Variational Principle

Abstract:

Using coupied variational principle, predicting fatigue crack initiation life of plane stress state plate-like component which leads to large range damage is analysed. The closed form solution about predicting fatigue crack initiation life of plane stress state plate-like component which leads to large range damage is derived. The method adopted in this paper is definite in mechanical concept，it can be widely used in analysis of predicting fatigue crack initiation life of various plate-like component which leads to large range damage. A new thinking and new method is provided for predicting crack initiation life of plate-like component.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 2193-2196
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.2193
• Online since: December 2012
• Authors: Wen Feng Tan
• Keywords: Coupied Variational Principle, Damage Mechanic, Fatigue Crack, Plate-Like Component, Prediction of Life

References

[1] X. Zhang, J. Zhao: Applied Fatigue Damage Mechanics of Metallic Structural Members (National Defence Industry Press, China 1998). (in Chiness).

[2] B. L. Fu: The Variational Principles of Coupled Systems in Photoelasticity. Applied Mathematics and Mechanics, Vol. 15(1994), p.37.

[3] B. Y. Yang, Y. T. Zhang: Engineering elastic-plastic mechanics (Mechanical Industry Press, China 2003). (in Chiness).