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Numerical Analysis of Brittle Fracture for Steel Nodes of Web of Beam with Circular Aperture
Author(s): 
Pages: 81-84
Year: Issue:  4
Journal: Journal of Gansu Sciences

Keyword:  J积分焊缝裂纹尖端梁腹板开圆孔脆断性能;
Abstract: 焊缝裂纹是断裂问题分析中一个重要组成部分,其中对带裂纹的新型钢节点分析是近几年的趋势.针对梁腹板开圆孔的节点形式,利用J积分理论,模拟了焊缝裂纹尖端的应力应变场.分析结果表明:裂纹尖端处的J积分在一定范围内与圆孔直径D成正比,与梁弱轴的回转半径成正比,然而与圆孔中心至柱翼缘的距离d无关.此外,方钢柱节点的承载能力和局部稳定性明显优于工字钢柱节点.
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