Stress and strainĀ·ln two dimensions, Principal stresses and strains, Mohr's construction, linear elastic materials, isotropy and anisotropy, stress-strain, uniaxial loading, thermal stresses, Beams: Bending moment and shear force diagram, bending stresses and deflection of beams, Shear stress distribution. Torsion of shafts, helical springs. Combined stresses, thick and thin walled pressure vessels. Structs of columns. Strain energy concepts and theories of failure.