A parametric stress analysis of T/Y and K square-to-square tubular joints

Abstract

A parametric stress analysis of T/Y and K square-to-square tubular joints subjected to axial loads, in-plane and out-of-plane bending moments has been performed using the finite element technique. Twenty-two and 26 sets of geometric parameters were used for the study of T/Y and K joints respectively. This study was carried out with the purpose of providing a sound basis for using square tubular sections in the alternative design of conductor guides which are important items of a drilling platform. The results of this analysis are presented as a set of 21 equations expressing the stress concentration factor as a function of the relevant geometric parameters for various loading conditions. The present results for square-to-square tubular joints are compared with others obtained for round-to-round and square-to-round tubular joints. In general, the stress concentration factors obtained from round-to-round and square-to-round tubular joints are closer, compared with those of the corresponding square-to-square tubular joints. © 1990.