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首页> 外文期刊>Advances in Structural Engineering >Design of cold-formed stainless steel lipped channel sections with web openings subjected to web crippling under end-one-flange loading condition
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Design of cold-formed stainless steel lipped channel sections with web openings subjected to web crippling under end-one-flange loading condition

机译:端部一法兰加载条件下带腹板开口的腹板开口的冷弯不锈钢唇形通道部分的设计

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摘要

This article presents a numerical investigation on the web crippling strength of cold-formed stainless steel lipped channel sections with circular web openings under end-one-flange loading condition. In order to take into account the influence of the circular web openings, a parametric study involving 1992 finite element analyses was performed, covering duplex EN1.4462, austenitic EN1.4404 and ferritic EN1.4003 stainless steel grades; from the results of the parametric study, strength reduction factor equations are proposed. The web crippling strengths predicted by the reduction factor equations are first compared to the strengths calculated using the equations recently proposed for cold-formed carbon steel lipped channel sections. It is demonstrated that the strength reduction factor equations proposed for cold-formed carbon steel are unconservative for the stainless steel grades by up to 7%. Unified strength reduction factor equations are then proposed that can be applied to all three stainless steel grades.
机译:本文提出了一种在端部一凸缘加载条件下具有圆形腹板开口的冷弯不锈钢带槽型材的腹板抗压强度的数值研究。为了考虑圆形网孔的影响,进行了涉及1992年有限元分析的参数研究,涉及双相EN1.4462,奥氏体EN1.4404和铁素体EN1.4003不锈钢等级;根据参数研究的结果,提出了强度折减系数方程。首先将由折减系数方程式预测的腹板抗折强度与使用最近针对冷弯碳钢唇槽型材提出的方程式计算的强度进行比较。结果表明,针对冷弯碳钢提出的强度折减系数方程对于不锈钢等级的保守性最高可达7%。然后提出统一的强度折减系数方程式,该方程式可应用于所有三个不锈钢等级。

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