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Date : 2016-06-23 12:24:21

STRAIN ENERGY IN GRADUAL LOAD:

 

U = Average Load x Change in length

     = stress x strain x volume

     Substituting the value of stress, strain, and volume of the section

 

The stress due to gradual load is P/A.

           This is the strain energy stored in a body. – Equation (A)

 

 

 

STRAIN ENERGY IN SUDDEN LOAD:

 

 The stress due to sudden load is found by equating the equation (A) in the following equation. (B)

             U = P x δL                                                                                      ---- Equation (B)

 

Strain energy due to sudden load is found by substituting the stress ζ due to sudden load in the following equation

Strain energy due to sudden load is found by substituting the stress due to sudden load in the following equation:

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