Ductile damage model based on void growth analysis by unit cell
نویسندگان
چکیده
منابع مشابه
Two mechanisms of ductile fracture: void by void growth versus multiple void interaction
Two distinct mechanisms of crack initiation and advance by void growth have been identified in the literature on the mechanics of ductile fracture. One is the interaction a single void with the crack tip characterizing initiation and the subsequent void by void advance of the tip. This mechanism is represented by the early model of Rice and Johnson and the subsequent more detailed numerical com...
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15 صفحه اولResponse to “Shear Impossibility—Comments on ‘Void Growth by Dislocation Emission’ and ‘Void Growth in Metals’”
We thank the authors of Ref. [1] for their comments and interest in our work [2–6]. We agree that the emission of shear loops on one single shear plane cannot lead to void growth. However, our simulations suggest that coordinated shear on non-parallel planes can lead to void growth/shrinkage [3–5]. Detailed descriptions of this process are still being worked out and represent an exciting area f...
متن کاملShear impossibility: Comments on “Void growth by dislocation emission” and “Void growth in metals: Atomistic calculations”
Recently it was proposed that voids in crystals could grow by emission of shear dislocation loops [V.A. Lubarda, M.S. Scheider, D.H. Kalantar, B.A. Remington, M.A. Meyers, Acta Materialia 52 (2004) 1397–1408]. Even more recently, this proposal was ostensibly supported by molecular simulations of voids in strained single crystals [S. Traiviratana, E.M. Bringa, D.J. Benson, M.A. Meyers, Acta Mate...
متن کاملSimulation of Intergranular Ductile Cracking in β Titanium Alloys Based on a Micro-Mechanical Damage Model
The intergranular crack propagation of the lamellar structure β titanium alloys is investigated by using a modified Gurson-type damage model. The representative microstructure of the lamellar alloy, which consists of the soft α phase layer surrounding the hard grain interiors, is generated based on an advanced Voronoi algorithm. Both the normal fracture due to void growth and the shear fracture...
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ژورنال
عنوان ژورنال: QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY
سال: 2019
ISSN: 0288-4771
DOI: 10.2207/qjjws.37.59