Chapter 2

Fundamental Linear Elastic Fracture Mechanics

Abstract

Fundamental linear elastic fracture mechanics are described in this chapter. The concept of energy release and balance is introduced during crack growth. Stress fields are provided for mode I, II, and III cracks at the crack tip location. The concepts of stress intensity factor and material fracture toughness are introduced. An analytical method is given to determine the stress intensity factor and energy release rate. Three kinds of complex fracture theories are discussed: the maximum circumference tension stress intensity factor theory, the minimum strain energy density stress intensity factor theory and the maximum energy release rate theory. The crack orientation angle, fracture ...

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