DEFINITION OF STRAIN ENERGY

Definition -  Whenever a body is strained, the energy is absorbed in the body. The energy, which absorbed in the body due to straining effect is known as strain energy. The straining effect may be due to gradually applied load or suddenly applied load or load with impact. Hence the 'strain energy' will be stored in the body when the load is applied gradually or suddenly or with an impact. The strain energy stored in the body is equal to the work done by the applied load in stretching the body.

Strain energy - The work done in straining the material, within the elastic limits, is known as strain energy.

Proof resilience - The maintain strain energy that can be stored in a material without permanent deformation is called proof resilience.

Modulus of resilience - The maximum strain energy stored in the body per unit volume is known as modulus of resilience.

Proof load - The maximum load which can be applied to a member without its being permanent deformed is called proof load.