engineering recuitment BHEL Engineer Trainee Mock Test 2025 Strength of Materials Simple Stress and Strain Volumetric Strain
The volumetric strain of a rectangular body subjected to three mutually perpendicular forces is
(where σx, σy and σz are the stresses in x, y and z direction respectively. E and ν are Young’s modulus and Poisson’s ratio respectively)
1
\(\rm \frac{\sigma_x+\sigma_y+\sigma_z}{E}\)
2
\(\rm \frac{\sigma_x+\sigma_y+\sigma_z}{E}(1-2v)\)
3
\(\rm \frac{\sigma_x}{E}\)
4
\(\rm \frac{\nu(\sigma_x+\sigma_y+\sigma_z)}{E}\)