Compression behaviour of Q355 steel angles with local defect at bolt holes

IF 2.6 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Frontiers in Materials Pub Date : 2024-09-05 DOI:10.3389/fmats.2024.1467087

Jinglu Zhang, An He, Yu Liu, Shao-Bo Kang

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引用次数: 0

Abstract

This paper presents experimental and numerical studies on compression behaviour of equal-leg steel angles with bolted connection and subjected to local defect at the bolt hole. To simulate corrosion, a mechanical cutting method was used in the experimental test to increase the diameter of bolt holes, and a total of 18 steel angles were investigated in the study. The parameters considered included the slenderness and the diameter of bolt holes. The slendernesses of steel angles were 80 and 140, and the diameter of bolt holes ranged from 21.5 to 27.5 mm. Additionally, numerical models were established for the steel angles. The accuracy of the numerical model was verified by comparing experimental data with numerical results. Based on the validated numerical model, a parametric analysis was conducted to quantitatively assess the influences of the slenderness and the diameter of bolt holes on the load capacity of specimens against global buckling. Experimental and numerical results showed that the defect at the bolt hole affected the load capacity of specimens when the diameter of the bolt hole was increased to 27.5 mm and the slenderness was not greater than 100.

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存在螺栓孔局部缺陷的 Q355 角钢的压缩性能

本文介绍了对螺栓连接的等脚钢角钢在螺栓孔局部缺陷作用下的压缩行为进行的实验和数值研究。为模拟腐蚀，在实验测试中使用了机械切割方法来增大螺栓孔的直径，共研究了 18 个角钢。考虑的参数包括细长度和螺栓孔直径。角钢的细长率分别为 80 和 140，螺栓孔直径范围为 21.5 至 27.5 毫米。此外，还为角钢建立了数值模型。通过比较实验数据和数值结果，验证了数值模型的准确性。在验证数值模型的基础上，进行了参数分析，以定量评估细长度和螺栓孔直径对试样全局屈曲承载能力的影响。实验和数值结果表明，当螺栓孔直径增大到 27.5 毫米且细长度不大于 100 时，螺栓孔缺陷会影响试样的承载能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers in Materials Materials Science-Materials Science (miscellaneous)

CiteScore

4.80

自引率

6.20%

发文量

749

审稿时长

12 weeks

期刊介绍： Frontiers in Materials is a high visibility journal publishing rigorously peer-reviewed research across the entire breadth of materials science and engineering. This interdisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers across academia and industry, and the public worldwide. Founded upon a research community driven approach, this Journal provides a balanced and comprehensive offering of Specialty Sections, each of which has a dedicated Editorial Board of leading experts in the respective field.