engineering recuitment AAI JE Technical Mock Test 2020-21 Design of Machine Elements Design For Static Loading Stress Concentration
If a prismatic bar having an elliptical hole in the centre with semi-major axis b perpendicular to the direction of loading and semi-minor axis an along the direction of loading is subjected to pull P, then the maximum stress induced at the edge of the hole will be.
σ = stress for uniform bar having no hole
1
σ × (1 + b/a)
2
σ × (1 + 2b/a)
3
σ × (1 + b/2a)
4
σ × (1 + 3b/a)