Journal ArticleDOI
Experimental and numerical evaluation of forming limit diagram for Ti6Al4V titanium and Al6061-T6 aluminum alloys sheets
Faramarz Djavanroodi,A. Derogar +1 more
TLDR
In this article, the effects of process parameters on forming limit diagrams have been evaluated and simulated using ABAQUS/Standard and the simulated results are in good agreement with the experiment.About:
This article is published in Materials & Design.The article was published on 2010-12-01. It has received 109 citations till now. The article focuses on the topics: Forming limit diagram & Formability.read more
Citations
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Formability of lightweight alloys by hot incremental sheet forming
TL;DR: In this paper, three lightweight alloys, typically utilized in the aircraft and aerospace industries, were formed by supplying a continuous current in order to generate a local heating, which allows a higher formability as compared to cold forming.
Journal ArticleDOI
Ultrasonic-assisted manufacturing processes: variational model and numerical simulations
Amir Siddiq,Tamer El Sayed +1 more
TL;DR: A fully variational porous plasticity model is modified to include ultrasonic softening effects and then utilized to account for instantaneous softening when ultrasonic energy is applied during deformation.
Journal ArticleDOI
Tube hydroforming process: A reference guide
TL;DR: In this article, an overall review of tube hydroforming studies is presented so that other researchers at different parts of the world can use it for further investigations in this area, and a guideline for employing finite element modeling (FEM) in the process analysis is proposed.
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Development of experimental and theoretical forming limit diagrams for warm forming of austenitic stainless steel 316
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Experimental and theoretical investigation of forming limit diagram for Ti-6Al-4 V alloy at warm condition
TL;DR: In this article, the authors used a hemispherical dome test with specimens of different widths to determine the forming limit diagram (FLD) for Ti-6Al-4 V alloy at 400°C.
References
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Journal ArticleDOI
A theory of the yielding and plastic flow of anisotropic metals
TL;DR: In this article, a theory is suggested which describes the yielding and plastic flow of an anisotropic metal on a macroscopic scale and associated relations are then found between the stress and strain-increment tensors.
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Limit strains in the processes of stretch-forming sheet metal
TL;DR: In this paper, a theoretical analysis of the process of the generation of the groove based on anisotropic plasticity theory is presented, and the system of equations derived was solved numerically with the aid of a computer, which enabled the limiting strain of the sheet metal to be determined as a function of the material.
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Plastic instability under plane stress
TL;DR: In this paper, conditions for instability of plastic strain under plane stress for a material conforming to the Mises-Hencky yield condition and strain-hardening according to a unique relationship between root-mean-square values of shear stress (q) and incremental strain (δψ).
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Localized necking in thin sheets
Sigurd Støren,James R. Rice +1 more
TL;DR: Using a simplified constitutive model of a pointed vertex on subsequent yield loci, the onset of localized necking under biaxial stretching has been predicted and this result supports the hypothesis of vertex-formation on the yield locus under continued plastic flow.