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A prismatic bar of 25 mm diameter and 2 m long is subjected to 60 KN axial tensile load. Young's modulus of elasticity of bar material is 200 GPa. Find the strain energy and resilience if the?
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A prismatic bar of 25 mm diameter and 2 m long is subjected to 60 KN a...
Calculation of Strain Energy and Resilience in a Prismatic Bar


Given Data:


  • Diameter of the bar = 25 mm

  • Length of the bar = 2 m

  • Applied axial tensile load = 60 KN

  • Young's modulus of elasticity of bar material = 200 GPa



Calculation of Area of Cross-section:

Area of cross-section of the bar can be calculated using the formula:

Area = π/4 * d2

Where,


  • π = 3.14

  • d = Diameter of the bar = 25 mm = 0.025 m


Putting the values in the formula, we get:

Area = 3.14/4 * (0.025)2 = 0.00049 m2


Calculation of Stress:

Stress can be calculated using the formula:

Stress = Applied load / Area of cross-section

Putting the values in the formula, we get:

Stress = 60,000 N / 0.00049 m2 = 122448.98 N/m2


Calculation of Strain:

Strain can be calculated using the formula:

Strain = Stress / Young's modulus of elasticity

Putting the values in the formula, we get:

Strain = 122448.98 N/m2 / 200,000,000,000 N/m2 = 0.000000622


Calculation of Strain Energy:

Strain energy can be calculated using the formula:

Strain energy = (1/2) * Stress * Strain * Volume

Where,


  • Volume = Area of cross-section * Length of the bar


Putting the values in the formula, we get:

Volume = 0.00049 m2 * 2 m = 0.00098 m3

Strain energy = (1/2) * 122448.98 N/m2 * 0.000000622 * 0.00098 m3 = 0.00003795 J


Calculation of Resilience:

Resilience can be calculated using the formula:

Resilience = (1/2) * Stress * Strain

Putting the values in the formula, we get:

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A prismatic bar of 25 mm diameter and 2 m long is subjected to 60 KN axial tensile load. Young's modulus of elasticity of bar material is 200 GPa. Find the strain energy and resilience if the?
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