Question

What is strain energy

Answer 1

Answer:

Strain energy is defined as the energy stored in a body due to deformation. The strain energy per unit volume is known as strain energy density and the area under the stress-strain curve towards the point of deformation.

Answer 2

Answer:

In physics, strain energy is the energy stored by a system undergoing deformation. For linearly elastic materials, strain energy is:

{\displaystyle U={\frac {1}{2}}V\sigma \epsilon ={\frac {1}{2}}VE\epsilon ^{2}={\frac {1}{2}}{\frac {V}{E}}\sigma ^{2}} U={\frac 12}V\sigma \epsilon ={\frac 12}VE\epsilon ^{2}={\frac 12}{\frac VE}\sigma ^{2}

where σ is stress, ε is strain, V is volume, and E is Young's modulus:

{\displaystyle E={\frac {\sigma }{\epsilon }}} E={\frac \sigma \epsilon }

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