Open Access

ARTICLE

Determination of Yield Lines for Circular Tubular T-joints under Axial Compression

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1 Dalian Maritime University, Dalian, China
2 Yantai University, Yantai, China
3 Yantai University, Yantai, China
4 Nanyang Technological University, Singapore

Structural Longevity 2009, 2(2), 129-137. https://doi.org/10.3970/sl.2009.002.129

Abstract

Yield line theory is commonly used for predicting the load carrying capacity of a tubular joint. Theoretical method and numerical investigation have both been carried out to determine the profile of yield lines on the chord surface for a circular tubular T-joint under axial compression. Two yield lines in a form of closed space curve are assumed to initiate when the axial compressive load reaches a critical value. The first yield line is located along the weld toe, and the second yield line is determined by minimum energy principle. Through finite element simulation and verification, the theoretical method is evaluated to be effective and reliable.

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