EVALUATION OF STRESSES IN A U-SHAPED MEMBER BY THE SHEAR DIFFERENCE METHOD

Abstract

The theoretical stress analysis of a U-shaped member is quite complicated and such members find frequent application in the grips of riveters and punches.This paper treats of the evaluation of stresses on a section of symmetry of the U-shaped member by the Shear Difference Method when loaded as shown in Fig. 1, as it is felt that the section of syinmetry seems to be the highly stressed region.In working out this problem, the isochrumatic fringe pattern on dark and bright back-ground and the isoclinic sketch Only are made use of and the Shear Difference Method has been used. The values arrived at by the above method have been checked by  the equilibrium and boundary conditions and the percentage error is only of the order of 1.5%. The authors feel that this is a quick and an accurate method by which the stresses across any section can be evaluated.