Failure prediction in bulk metal forming process

Topa, Ameen and Shah, Qasim Hussain (2014) Failure prediction in bulk metal forming process. International Journal of Manufacturing Engineering, 2014. ISSN http://www.hindawi.com/journals/ijme/

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Abstract

An important concern in metal forming is whether the desired deformation can be accomplished without defects in the final product. Various ductile fracture criteria have been developed and experimentally verified for a limited number of cases of metal forming processes. These criteria are highly dependent on the geometry of the workpiece and cannot be utilized for complicated shapes without experimental verification.However, experimental work is a resource hungry process. This paper proposes the ability of finite element analysis (FEA) software such as LS-DYNA to pinpoint the crack-like flaws in bulk metal forming products. Two different approaches named as arbitrary Lagrangian-Eulerian (ALE) and smooth particle hydrodynamics (SPH) formulations were adopted. The results of the simulations agree well with the experimental work and a comparison between the two formulations has been carried out. Both approximation methods successfully predicted the flow of workpiece material (plastic deformation). However ALE method was able to pinpoint the location of the flaws.

Item Type:	Article (Journal)
Additional Information:	3563/39182
Uncontrolled Keywords:	bulk metal forming, arbitrary Lagrangian-Eulerian (ALE), smooth particle hydrodynamics (SPH)
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1125 Machine shops and machine shop practice
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Qasim Hussain Shah
Date Deposited:	18 Nov 2014 16:00
Last Modified:	27 Jul 2015 00:28
URI:	http://irep.iium.edu.my/id/eprint/39182

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