The variational technique is applied to calculate the stresses for a thin-walled structure composed of a closed cell connected to a fourflanges open cell. The structure has one built-in end, the other end is free, loaded by torque moment,a rectangular model is constructed for application of the obtained general results found by variational technique. Experimental measurements are carried out on it using semiconductor strain gauges.The theoretical and experimental results of normal stress distribution in flanges are in good agreement.
The effect of shell ends on the contact problems of saddle sup-: porting cylindrical shell is solved using the semi-bending • theory of shells. The saddle / cylinder interface pressure and the stress distributions are found for different saddle angles, for both welded saddle and not welded saddle. The min. distance of the saddle position from the shell end is found such : that the end has no effect on the stress at the saddle positions. The circumferential stresses at the plane of middle profile of the saddle are found experimentally using strain gauge. The experimental results are in good agreement with those' obtained from numerical analysis.
In this paper a variation of the usual Vrefftz method is presented and applied to harmonic problems. Here, the fundamental solutions of the given problem are employed as expansion functions and their singularities are located outside the domain of the problem to avoid any handling of a singular quantities. This method has a significant computationsal advantage in that ho:::e no integrations are required. Test problems have been analysed using tie proposed method and the results compared with those generated by the ReHlar Boundary Element Method using continuous and partially -discontin. as elements.
Ste CAIRO -EGYPT 7 SM-6 501 r 1 USING THE SEMIBENDING THEORIES IN SOLVING THIN 2 WALLED CYLINDRICAL SHELL CONSTRUCTIONS. 3 ZAKARIA Z. MOMEH 4 ABSTRACT The semibending theories of thin walled cylindrical shell construction neglect the increment in curvature of the shell in the axial direction. The basic differential equations of the shells using the semibending theories are derived for three different cases and are named as simplified semibending, semibending theory with incompressible middle surface and semibending theory with compressible middle surface. The differences between these theories depend on the values of the circumferential normal strain and the shear strain. The derived differential equations are solved and applied to the prnblems of influence lines of stresses and deformations for different loading conditions on a long shells. * Col. Dr.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.