Three-dimensional finite element analysis of fracture behaviour in general yielding fracture mechanics

V. V. CHAUDHARI; rnD. M. KULKARNI; rnR. PRAKASH

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Three-dimensional finite element analysis of fracture behaviour in general yielding fracture mechanics

机译：普通屈服断裂力学中断裂行为的三维有限元分析

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Three-dimensional finite element analysis is performed in order to quantify stress variation, degree of shear lip, amount of necking, and plastic zone. With the help of finite element analysis, state of stress along the crack front and along the unbroken ligament length is studied. The 3-D finite element analysis shows that the location of maximum stress level causing crack initiation is in the vicinity of the crack-tip. The effects of increasing loads on stress triaxiality are studied. At the crack initiation load the predominating plane stress condition is observed. A few observations at macroscopic level are reported which are not observed in linear elastic fracture mechanics as well as in elastic-plastic fracture mechanics. 3-D FE results are validated by experimental results.

机译：进行三维有限元分析，以量化应力变化，剪切唇的程度，缩颈量和塑性区。借助有限元分析，研究了沿裂纹前沿和未断裂韧带长度的应力状态。 3-D有限元分析表明，引起裂纹萌生的最大应力水平位置在裂纹尖端附近。研究了增加载荷对应力三轴性的影响。在裂纹萌生载荷下，观察到主要的平面应力状态。报告了一些宏观水平的观察结果，这些观察结果在线性弹性断裂力学和弹塑性断裂力学中均未观察到。实验结果验证了3-D FE结果。

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来源
《Strojnicky Casopis》 |2010年第3期|p.131-148|共18页
作者
V. V. CHAUDHARI; rnD. M. KULKARNI; rnR. PRAKASH;
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作者单位

Mechanical Engineering Group, Birla Institute of Technology and Science, Pilani, Goa Campus, Goa 403 726, India;

rnMechanical Engineering Group, Birla Institute of Technology and Science, Pilani, Goa Campus, Goa 403 726, India;

rnMechanical Engineering Group, Birla Institute of Technology and Science, Pilani, Ra-jasthan 333 031, India;

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正文语种 eng
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关键词
general yielding fracture mechanics; finite element analysis; plane stress; CT specimen;

机译：一般屈服断裂力学;有限元分析;平面应力CT标本;

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1. Experimental and finite element analysis of fracture criterion in general yielding fracture mechanics [J] . D. M. Kulkarni, Ravi Prakash, A. N. Kumar Sadhana: Academy Proceedings in Engineering Science . 2002,第6期

机译：普通屈服断裂力学中断裂准则的实验与有限元分析
2. SOLVING LINEAR AND NONLINEAR THREE-DIMENSIONAL PROBLEMS OF FRACTURE MECHANICS BY A SEMI-ANALYTIC FINITE ELEMENT METHOD. PART 1. THEORETICAL BACKGROUND AND A STUDY OF EFFICIENCY OF FEM PROCEDURE FOR SOLVING THREE-DIMENSIONAL PROBLEMS OF FRACTURE MECHANICS [J] . V. A. Bazhenov, A. I. Gulyar, S. O. Piskunov Strength of Materials . 2011,第1期

机译：用半解析有限元方法求解断裂力学的线性和非线性三维问题。第1部分。求解断裂力学三维问题的有限元程序的理论背景和效率研究
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4. AUTOMATED FRACTURE MECHANICS AND FATIGUE ANALYSES BASED ON THREE-DIMENSIONAL FINITE ELEMENT FOR WELDING COMPONENTS [C] . Hitoshi Nakamura, Osamu Hazama, Seiichi Tajima, ASME Pressure Vessels and Piping conference . 2014

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5. Fracture mechanics study of tubular joint weld toe defects with three-dimensional finite elements. [D] . Han, Shizhong. 1992

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6. A NEW FRACTURE ASSESSMENT APPROACH COUPLING HR-pQCT IMAGING AND FRACTURE MECHANICS-BASED FINITE ELEMENT MODELING [O] . Ani Ural, Peter Bruno, Bin Zhou, -1

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7. Experimental and finite element analysis of fracture criterion in general yielding fracture mechanics [O] . D M Kulkarni, Ravi Prakash, A N Kumar 2002

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8. Fracture Mechanics Analysis of Some Fatigue and Fracture Test Specimens Using Finite Elements. [R] . Delserro, G. 1987

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Three-dimensional finite element analysis of fracture behaviour in general yielding fracture mechanics

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