Ah&act-In
this paper theoretical and experimental investigations have been carried out to determine the effect of an asymmetrical V-shaped notch on the load carrying capacity of eccentrically loaded columns. The depth of the notch was kept constant whereas the notch angle, notch root radius; eccentricity of loading and length of the column was varied. It has been concluded that an asymmetrically placed V-notch decreases the load carrying capacity of the column. The load carrying capacity is not affected appreciably upto a notch angle of approx. 90", but beyond 90" it increases. The load carrying capacity of the column also increases as the notch root radius increases but it decreases as the eccentricity of load and slenderness ratio increase. NOTATION A area of cross section a depth of notch b depth of column below the notch c distance of outermost fibres from neutral axis E modulus of elasticity e eccentricity I moment of inertia & Neuber's stress-concentration factor Kb stress-concentration factor under bending K, stress-concentration factor under tension I length of the column I, equivalent length of the column M bending moment P eccentric load PE Euler's buckling load, x2 EI/I, (x, y) Cartesian coordinates a notch flank angle p notch root radius ub bending stress ud direct stress 0, resultant stress e,, yield strength.