SOM ASSIGNMENT –TORSION OF SHAFTS A torque of 10 k N m acts on a 100 mm diameter steel shaft. Determine the maximum shearing stress in the shaft. Also calculate the stresses and strains at 20mm, 40mm, 60mm and 80 mm diameters. Show the stress variation and strain variation. Given G = 80 GN/m2. ANS: […]
INTERVIEW SHORT QUESTION ANSWERS ON STRENGTH OF MATERIALS – Numerical problems on (Second moment of inertia, elongation due to self weight and external load, Section modulus, Deflection at free end of a cantilever, Ratio of torsional moments of solid and hollow shafts, ratio of maximum bending and shear stresses in a shaft under M and […]
SOM—INTERVIEW SHORT QUESTION ANSWERS ON STRENGTH OF MATERIALS – –deflection, torque, ratio of maximum bending and shear stress, difference between Neutral layer and neutral axis, difference between torsional rigidity and lateral rigidity If the deflection at the free end of a cantilever of rectangular cross—section due to certain loading is 0.8 cm, find the […]
S O M MECHANICAL ENGINEERING M C Q INTERVIEW SHORT QUESTION ANSWERS ON STRENGTH OF MATERIALS –Question Answers–Neutral axis, equivalent length of a column, thermal stresses, principal planes, point of Contra-flexure, parallel axis theorem, Compare hollow and solid shaft, difference between Close coiled and Open coiled springs, composition and application of springs Neutral axis of a beam. It is a […]
Multiple Choice Questions (mcq) on Strength of Materials in Power Transmitting Shafts Variation of shear stress in a shaft is (a) Parabolic (b) Linear (c) Cubical (d) None (Ans: b) Power in watts in a shaft having N RPM is given by the equation (a) Power = 2π NT/60 (b) Power = 2π N T […]
S O M — Short Interview Question Answers on Bending Stress, Torsional Stress, Buckling Stress and Complex Stress 11. What is a bending stress? What is its symbol? What are its units? Bending stress is caused due to load perpendicular to the length (lateral load) in a beam. Bending of beams causes both tensile and […]
SOM — Short Interview Question Answers on Torsion equation, Power equation, stresses in hollow and solid shafts Explain each term in the torsion equation and state the assumptions used in deriving torsion equation. T / J = τ / r = G θ / L T = torque acting on the shaft, Nm J polar momentof inertia, […]
Torsion of Shafts —- Design of Shafts DESIGN OF SHAFTS/ STRESSES IN SHAFTS CASE 1 Only T is acting Uses only torsion equation Tmax / J = τ/r = Gθ/L CASE 2 When T and M are acting. (i) Find Equivalent torque Teq =( T2 + M2)0.5 Equivalent torque is one which acting alone produces the combined shear effect of […]
TORSION OF SHAFTS–1–Various Forces/Moments Acting on Shafts, STRESSES AND STRAINS IN SHAFTS, VARIOUS SHAPES OF SHAFTS, POWER TRANSMISSION EQUATION AND MAXIMUM TORQUE Q. VARIOUS FORCES/MOMENTS ACTING ON A SHAFT Torque, bending moment and axial thrust. 1. Turning moment OR Torque to rotate the shaft. It is a must for every shaft. Use torsion equation Tmax / J = τ/r […]