On Stress-Strain Fields near Mode i Ductile Crack Tip in Elastic-Plastic Fracture

Q4 Physics and Astronomy

Defect and Diffusion Forum Pub Date : 2023-08-22 DOI:10.4028/p-qztRb0

S. Bhat, C. Solaimuthu

引用次数: 0

Abstract

A mode I, centre crack, in ductile steel plate of finite dimensions is modeled in ANSYS software. Non-linear stress-strain data of steel are used. Plane strain case is adopted. A suitable value of far field tensile stress (pressure) is chosen such that EPFM condition prevails at the crack tip. Process and plastic zones are obtained at the crack tip. Desired values are noted. Areas of high stress and high strain are identified. Validation of void nucleation taking place ahead of crack tip and not exactly at the crack tip and coalescence of voids happening at the crack tip are confirmed from the results. Plots between the distance of desired location from the crack tip and load line stresses and strains are drawn. The plots are in accordance with the expectations.

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弹塑性断裂i型延性裂纹尖端附近的应力-应变场

在ANSYS软件中对有限尺寸延性钢板中的一种模式I，即中心裂纹进行了建模。使用了钢的非线性应力-应变数据。采用平面应变情况。选择合适的远场拉伸应力（压力）值，使得EPFM条件在裂纹尖端盛行。在裂纹尖端获得工艺区和塑性区。记录所需的值。确定了高应力和高应变区域。结果证实了在裂纹尖端之前而不是在裂纹尖端发生的孔隙成核以及在裂纹尖端处发生的孔隙聚结。绘制了所需位置与裂纹尖端的距离与载荷线应力和应变之间的曲线图。这些情节符合预期。

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

Defect and Diffusion Forum Physics and Astronomy-Radiation

CiteScore

1.20

自引率

0.00%

发文量

127

期刊介绍： Defect and Diffusion Forum (formerly Part A of ''''Diffusion and Defect Data'''') is designed for publication of up-to-date scientific research and applied aspects in the area of formation and dissemination of defects in solid materials, including the phenomena of diffusion. In addition to the traditional topic of mass diffusion, the journal is open to papers from the area of heat transfer in solids, liquids and gases, materials and substances. All papers are peer-reviewed and edited. Members of Editorial Boards and Associate Editors are invited to submit papers for publication in “Defect and Diffusion Forum” . Authors retain the right to publish an extended and significantly updated version in another periodical.