Unit 1
Stress at a point – stress on an arbitrarily oriented plane – stress transformations – strain theory – principal stresses & strains (2D& 3D) – Generalized Hooke’s law – Equations of thermo-elasticity for isotropic materials – strain energy density – stress concentration.
Failure & Failure criteria: Modes of failure – yield failure criteria – introduction to fracture mechanics – cracks & brittle fracture – fatigue – elastic and inelastic buckling.