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The shape of stress vs strain graph within elastic limit is :

Elasticity: Longitudinal Stress & strain | Shear stress & shear strain | Volumetric stress and strain

On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, "Stress"/"strain" = a constant for the material of wire. Just on crossing the yield region, the material will have

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On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, "Stress"/"strain" = a constant for the material of wire. Two wires of same material have length and radius (L,r) and (2L , r/2) . The ratio of their young's modulii is

Elasticity: Longitudinal, Shear, Volumetric stress and strain | Elongation of rod under own weight Thermal stress | Elastic energy | Torsion

Define stress and strain and derive their units. What is Hooke's law? Write its one limitation.

The ratio stress/strain remains constant for small deformation. What will be the effect on this ratio when the deformation made is very large?