材料科学
接头(建筑物)
十字形
纯弯曲
非线性系统
作者
Spyros A. Karamanos,Arie Romeijn,Jaap Wardenier
标识
DOI:10.1016/s0951-8339(01)00020-x
摘要
Abstract Welded tubular connections exhibit significant stress concentrations at the weld vicinity, which may result in fatigue failure. Stress concentration factors (SCFs) in DT-joint are computed, based on an extensive finite element study. The present paper develops a methodology for the calculation of the maximum local stress, referred to as “hot-spot stress”, in a multi-planar DT-joint, with particular emphasis on the effects of bending moments on the braces and the chord. Special attention is focussed on the location where critical stress concentration occurs, as well as on the so-called “carry-over phenomenon” and its implications on the hot-spot stress value. Simplified design equations for fatigue design are proposed to determine SCF values due to bending in order to improve predictions with respect to existing design tools.
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