engineering recuitment GATE CE 2023-24 Test Series Strength of Materials Simple Stress and Strain Volumetric Strain
A bar of steel is 40 mm × 40 mm in section and is 120 mm long. It is subjected to a tensile load of 200 kN along the longitudinal axis and tensile loads of 500 kN and 400 kN on the lateral faces.
Take E = 2 × 105 N/mm2 and \(\frac{1}{m} = 0.3\)1
Elongation along the longitudinal length of bar is 41.25 × 10-3 mm
2
Elongation along the depth of bar is 29.3 × 10-5 mm
3
Change in volume of bar is 120 mm3
4
Axial longitudinal tensile load of 110 kN acting alone longitudinally can produce same longitudinal strain.