What is elastic strain energy?

Up to the elastic limit of a sample, all the work done in stretching it is stored potential energy, or Elastic Strain Energy. This value can be determined by calculating the area under the the force-extension graph.

How is elastic strain energy different from inelastic strain energy?

All Answers (6) In Inelastic case Stress-strain curve is not linear and does not follow hooke’s law( significant permanent strain after removal of loads). Elastic strain is the strain that is completly recoverable when the applied load is removed while plastic strain can’t be recovered.

What is strain energy used for?

Definition of Strain Energy Strain energy is a type of potential energy that is stored in a structural member as a result of elastic deformation. The external work done on such a member when it is deformed from its unstressed state is transformed into (and considered equal to the strain energy stored in it.

What is the formula for strain energy?

When stress σ is proportional to strain ϵ, the strain energy formula is given by, U = 1 / 2 V σ ϵ. Where, σ = stress, ϵ = strain, V = volume of body. Regarding young’s modulus E, the strain energy formula is given as, U = σ 2 / 2E × V.

What are units of strain energy?

The unit of strain energy is the same as work – J (SI) and ft-lb (British). If the force P is gradually removed, the bar will shorten and at least a portion of the strain energy will be recovered in the form of work.

What is the definition of strain energy?

Strain energy is a form of potential energy that is produced by deforming a solid. As a solid item is deformed, the energy used to deform the item is stored. This energy is released when the deformed item returns to its original shape. This stored energy is called strain energy as a way of describing the effect the energy has on the solid.

What is total strain energy?

The total strain energy in a bar composed of several sections is equal to the sum of strain energies in each section; however, it is important to realize that the total strain energy for a bar with several loads is not equal to the sum of strain energies for each load.