Stress concentrations in DT/X square-to-square and square-to-round tubular joints

Journal Article · Sun May 01 04:00:00 EDT 1994 · Journal of Offshore Mechanics and Arctic Engineering; (United States)

DOI:https://doi.org/10.1115/1.2920132· OSTI ID:7043829

Soh, A K; Soh, C K ^[1]

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1. Nanyang Technological Univ., Nanyang (Singapore)

A parametric stress analysis of DT/X square-to-square and square-to-round tubular joints subjected to axial loads, in-plane, and out-of-plane bending moments has been performed using the finite element technique in order to provide a sound basis for using such sections in the design of complex structures. The results of this analysis are presented as a set of equations expressing the stress concentration factor as a function of the relevant geometric parameters for various loading conditions. A comparison is made between the results obtained for square-to-square and square-to-round tubular joints and those obtained for round-to-round tubular joints by other researchers. In general, the stress concentration factors for square-to-square tubular joints are the highest, followed by those of the corresponding round-to-round joints, with those of the corresponding square-to-round joints the lowest when the joints are subject to axial loads. In the case of in-plane bending moment, the stress concentration factors for square-to-square joints are generally still the highest, but followed by those of the corresponding square-to-round joints, with those of the corresponding round-to-round joints the lowest. However, the stress concentration factors for the three types of joint are comparable when they are subject to out-of-plane bending moments.

• OSTI ID: 7043829
• Journal Information: Journal of Offshore Mechanics and Arctic Engineering; (United States), Journal Name: Journal of Offshore Mechanics and Arctic Engineering; (United States) Vol. 116:2; ISSN 0892-7219; ISSN JMOEEX
• Country of Publication: United States
• Language: English

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