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Keywords: ductile fracture
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Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. June 2021, 143(6): 061013.
Paper No: MANU-20-1102
Published Online: February 2, 2021
... in the symmetry section of the front ridge was calculated. Furthermore, the ductile fracture law was also included to predict the mechanism and the initiation location of fracture in the scratching process. The predictive results were further validated by scanning electron microscope (SEM) observations...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. December 2018, 140(12): 121014.
Paper No: MANU-18-1205
Published Online: October 8, 2018
... ) = σ y 0 + K ( ε ¯ p ) n where σ y 0 stands for the initial yield stress, n is the strain hardening exponent, and K is the strength coefficient. The ductile fracture takes place in three stages: (i) nucleation, (ii) growth, and (iii) coalescence...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. December 2011, 133(6): 061008.
Published Online: December 1, 2011
... Thomason , P. F. , 1998 , “ A View on Ductile-Fracture Modeling ,” Fatigue Fract. Eng. Mater. Struct. , 21 ( 9 ), pp. 1105 – 1122 . 10.1046/j.1460-2695.1998.00077.x 15 Tasan , C. C. , Hoefnagels , J. P. M. , and Geers , M. G. D. , 2009 , “ A Brittle-Fracture Methodology...
Journal Articles
Article Type: Technical Briefs
J. Manuf. Sci. Eng. April 2010, 132(2): 024503.
Published Online: April 21, 2010
...Sergei Alexandrov; Lihui Lang This paper deals with some general properties of a ductile fracture criterion, which generalizes two ductile fracture criteria conventionally adopted for metal forming analysis and design. The results are valid for a wide class of material models applicable to both...
Journal Articles
Article Type: Special Section: Micromanufacturing
J. Manuf. Sci. Eng. June 2008, 130(3): 031115.
Published Online: May 23, 2008
... 01 2008 23 05 2008 carbon nanotubes cutting ductile fracture failure analysis finite element analysis machining polymers carbon nanotube composites machining model Part I of this paper dealt with the development of a microstructure-level finite element machining...
Journal Articles
Article Type: Technical Papers
J. Manuf. Sci. Eng. August 2005, 127(3): 612–621.
Published Online: July 21, 2004
.... An elastic-plastic constitutive model with experimentally validated damage models are incorporated through the user subroutine VUMAT in ABAQUS , for modeling deformation and ductile fracture in the material. Macroscopic experiments with microscopic observations are conducted to characterize the material...
Journal Articles
Article Type: Technical Briefs
J. Manuf. Sci. Eng. August 2005, 127(3): 698–702.
Published Online: June 23, 2004
... on the current value of the void volume fraction. Two other criteria which are basically due to Thomason’s internal necking condition ( Thomason, P. F., 1990, Ductile Fracture of Metals, Pergamon, Oxford ) as well as McClintock’s shear band formation criterion are applied ( McClintock, F. A., Kaplan, S. M...
Journal Articles
Article Type: Technical Papers
J. Manuf. Sci. Eng. August 2002, 124(3): 528–535.
Published Online: July 11, 2002
... towards the free surface. Depending on the work material hardness and cutting conditions, catastrophic failure within the upper region of the primary shear zone occurs through either ductile fracture or large strain plastic deformation. Prior to the onset of chip segmentation, which occurs with increases...
Journal Articles
Article Type: Technical Papers
J. Manuf. Sci. Eng. May 2002, 124(2): 416–419.
Published Online: April 29, 2002
..., resulting in up to 1400 elements in the entire mesh. This element size is not necessary to predict the process force correctly, but it will be vital to accurately describe the field variables, needed to precisely predict ductile fracture initiation. The punch moves down and penetrates the specimen...
Journal Articles
Article Type: Technical Papers
J. Manuf. Sci. Eng. August 2000, 122(3): 476–483.
Published Online: October 1, 1999
...A. M. Goijaerts; L. E. Govaert; F. P. T. Baaijens This study is focused on the description of ductile fracture initiation, which is needed to predict product shapes in the blanking process. Two approaches are elaborated using a local ductile fracture model. According to literature, characterization...