Volume 13, Issue 6 (2013)                   Modares Mechanical Engineering 2013, 13(6): 96-102 | Back to browse issues page

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Numerical Simulation of Cutting and Fine Cutting Processes by Lemaitre's Ductile Damage Model in Conjunction with Large Deformation Theory. Modares Mechanical Engineering. 2013; 13 (6) :96-102
URL: http://journals.modares.ac.ir/article-15-10590-en.html
Abstract:   (2717 Views)
Abstract- Damage of metals is a progressive physical process which finally leads to the failure of them. In this study, first, a coupled elastic- plastic- Lemaitre's ductile damage model combined with large deformations theory is developed and implemented as a subroutine into ABAQUS/EXPLICIT code. Then, by performing standard tensile and Vickers micro-hardness tests, mechanical and damage properties for St14 steel are determined. For validation of the damage model and also identified properties, cutting and fine cutting processes are simulated by the model in two cases of large and small deformation theories. Comparison of the numerical simulation results and experimental reports show that Lemaitre's ductile damage model combined with large deformation theory can accurately predict damage evolution, crack initiation, propagation, and ductile fracture in the metal forming processes with large deformations. Keywords: Lemaitre's Ductile Damage Model, Large Deformations Theory, Cutting and Fine Cutting Processes, Ductile Fracture.
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Article Type: Research Article | Subject: Finite Elements Method|Damage Mechanics
Received: 2012/10/14 | Accepted: 2013/02/26 | Published: 2013/07/6

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