STRESSES IN BEAMS AND SHAFTS
4.1 STRESSES IN BEAMS DUE TO BENDING
TYPES OF BENDING STRESSES – NEUTRAL AXIS – THEORY OF SIMPLE BENDING – ASSUMPTIONS – MOMENT OF RESISTANCE – DERIVATION
OF FLEXURE/BENDING EQUATION M / I = E / R = /Y – BENDING Σ
STRESS DISTRIBUTION – CURVATURE OF BEAM – POSITION OF N.A
AND CENTROIDAL AXIS – STIFFNESS EQUATION – FLEXURAL RIGIDITY –
STRENGTH EQUATION – SIGNIFICANCE OF SECTION MODULUS –
NUMERICAL PROBLEMS.
4.2 STRESS IN SHAFTS DUE TO TORSION
DEFINITIONS OF: SHAFT, COUPLE, TORQUE (OR) TWISTING MOMENT –
TYPES OF SHAFTS (ONE END FIXED AND THE OTHER ROTATING, BOTH
ENDS ROTATING AT DIFFERENT SPEEDS) – THEORY OF PURE TORSION
– ASSUMPTIONS -DERIVATION OF TORSION EQUATION, T / IP =
Λ Ө MAX/ R = G / L – SHEAR STRESS DISTRIBUTION IN CIRCULAR
SECTION DUE TO TORSION – STRENGTH AND STIFFNESS OF SHAFTS –
TORSIONAL RIGIDITY – TORSIONAL MODULUS – COMPARATIVE
ANALYSIS OF HOLLOW AND SOLID SHAFTS – POWER TRANSMITTED BY
A SHAFT – NUMERICAL PROBLEMS.
PIN JOINTED FRAMES BY METHOD OF JOINTS AND
GRAPHICAL METHODS