Abstract
This paper reports the strength reduction factors of cracked multi-planar tubular DT-joints subjected to three simple loadings. The three strength reduction factors are used to calculate the static strength of the cracked tubular DT-joints and they have never been reported in any reference. Mesh of the cracked tubular DT-joints is created using a set of mesh generation code, and then FE (Finite Element) analyses are carried out using commercial software. The strength reduction factor is defined as the ratio of the static strength of the cracked joint over the uncrack joint. The effect of the crack area on the static strength of tubular DT-joints is investigated prudently. It is found that when the crack area is 25% of the product of chord thickness and weld length, the static strength of the cracked tubular DT-joint can decrease more compared to the corresponding uni-planar tubular T-joint, and the decrease magnitude is up to 23.2%, 37.4% and 31.2% of the static strength of the uncracked tubular DT-joint for axial tensile, IPB (In-Plane Bending) and OPB (Out-of-Plane Bending) loading, respectively. Finally, based on the FE results, three linear equations are recommended for calculating the strength reduction factors of cracked tubular DT-joints.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.