CRACK EXTENSION MODELLING OF A DUCTILE FRACTURE DAMAGE

机译：韧性断裂损伤的裂纹扩展建模

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In order to analyse the ductile tearing in the Nickel-Chrome steel case, Gurson-Tvergaard-Needelman (GTN) model has been used in this study. Both experimental and numerical results have been obtained for notched round and CT specimens. Indeed, the crack growth resistance, defined by J-Δa curve, has been correctly simulated using the numerical calculations by adjusting the different parameters of this model in the calibration procedure. But, it is difficult to determine an unique parameters set to account for the material properties.

机译：为了分析镍铬钢外壳中的延性撕裂，本研究使用了Gurson-Tvergaard-Needelman（GTN）模型。缺口圆形和CT试样均获得了实验和数值结果。实际上，通过在校准程序中调整该模型的不同参数，使用数值计算已正确模拟了由J-Δa曲线定义的抗裂纹扩展性能。但是，很难确定用于说明材料属性的唯一参数集。

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来源
《2002 ASME Pressure Vessels and Piping Conference, Aug 5-9, 2002, Vancouver, British Columbia, Canada》|2002年|p.99-104|共6页
会议地点 Vancouver(CA)
作者
A. IMAD; M. NAIET ABDELAZIZ;
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作者单位

Ecole des Hautes Etudes Industrielles, Laboratoire d'Etudes des Structures, 13 rue de Toul, 59046 Lille Cedex, France;

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原文格式 PDF
正文语种 eng
中图分类力学;
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4. CRACK EXTENSION MODELLING OF A DUCTILE FRACTURE DAMAGE [C] . A. IMAD, M. NAIET ABDELAZIZ, American Society of Mechanical Engineers, ASME Pressure Vessels and Piping Conference . 2002

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CRACK EXTENSION MODELLING OF A DUCTILE FRACTURE DAMAGE

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