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首页> 外文期刊>International Journal of Space Structures >Proposed Equations of Stress Concentration Factor (SCF) for Gap Tubular K-Joints Subjected to Bending Load
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Proposed Equations of Stress Concentration Factor (SCF) for Gap Tubular K-Joints Subjected to Bending Load

机译：弯曲载荷作用下间隙K型节点的应力集中系数（SCF）的建议方程式

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摘要

In this paper, geometrical and numerical modelling for tubular K-joints has been presented. Stress concentration factors (SCFs) along the weld of the joint have been obtained from an experiment on a K-joint specimen subjected to in-plane bending (IPB) load. Experimental results showed that numerical analysis by using the above models is accurate enough. Therefore, this numerical modelling technique can be safely and accurately used to analyze SCF of K-joints. Based on this, about 1,000 numerical models have been analyzed for K-joints under IPB in a special range. Equations to predict SCF of K-joints under IPB thus have been proposed by using curve fitting from numerical analysis results. The equations were validated by comparing with other equations. The comparisons show the proposed SCF equations are accurate enough and thus it is possible to apply these equations in practice conveniently and safely.
机译：在本文中，提出了管状K型接头的几何和数值模型。沿焊缝的应力集中系数（SCFs）是通过对承受平面内弯曲（IPB）载荷的K接头试样进行的实验获得的。实验结果表明，利用上述模型进行数值分析是足够准确的。因此，该数值建模技术可以安全，准确地用于分析K关节的SCF。在此基础上，已经对IPB下特定范围内的K接头进行了大约1,000个数值模型的分析。因此，通过数值分析结果的曲线拟合，提出了预测IPB下K接头SCF的方程。通过与其他方程比较来验证方程。比较表明，所提出的SCF方程足够精确，因此可以方便，安全地在实践中应用这些方程。

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