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Chapter 6a – Plane Stress/Strain Equations
www.ce.memphis.eduChapter 6a – Plane Stress/Strain Equations Learning Objectives • To review basic concepts of plane stress and plane strain. • To derive the constant-strain triangle (CST) element stiffness matrix and equations. • To demonstrate how to determine the stiffness matrix and stresses for a constant strain element.
Materials Data Book - University of Cambridge
www-mdp.eng.cam.ac.uk6 FAST FRACTURE The stress intensity factor, K: K = Y σ πa Fast fracture occurs when K = KIC In plane strain, the relationship between stress intensity factor K and strain energy release rate G is: E G EG