Journal ArticleDOI
A general forming limit criterion for sheet metal forming
TLDR
In this article, it is shown that the forming limit for both proportional loading and non-proportional loading can be explained from a single criterion which is based on the state of stress rather than the state-of-stress.About:
This article is published in International Journal of Mechanical Sciences.The article was published on 2000-01-01. It has received 397 citations till now. The article focuses on the topics: Stamping & Sheet metal.read more
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Journal ArticleDOI
A comparative study of three forms of an uncoupled damage model as fracture judgment for thin-walled metal sheets
TL;DR: In this paper, two uncoupled damage models of the MMC4 and DF2016 are embedded into an anisotropic yield function first, and then the above-mentioned three forms of the two models are separately applied for fracture prediction in shear test, dog-bone specimen tensile test, hole specimen-tensor test, notched specimen-test, bulging test, and a complex non-proportional loading process of spin forming, respectively.
Journal ArticleDOI
A Study on Infrared Local Heat Treatment for AA5083 to Improve Formability and Automotive Part Forming
TL;DR: In this article, an IR local heat treatment, heating only small areas where the heat treatment is required, for an aluminum alloy to improve the formability with a reduction of heating energy.
Journal ArticleDOI
Numerical Investigation on Stress based Forming Limit Diagram for Ti-6Al-4V Alloy
TL;DR: In this paper, the experimental FLD and theoretical FLD curves obtained from Marciniak-Kuczynski (MK) analysis are converted to FLSDs and compared. But, these are only reliable for operations with linear strain paths.
Proceedings ArticleDOI
Prediction of stress- and strain-based forming limits of automotive thin sheets by numerical, theoretical and experimental methods
TL;DR: In this article, the effect of the hardening model parameters on defining of limit stress values during Nakazima tests for automotive dual phase (DP) steels was investigated, and the results showed that each model parameters could produce some discrepancies between the limit stress states in the range of higher equivalent strains than uniaxial stretching.
Prediction of forming limit curves (FLD, MSFLD and FLSD) and necking time for SS304L sheet using finite element method and ductile fracture criteria
TL;DR: In this article, the authors used the simulation of Erichsen test (out-of-plane stretching test) using hemispherical punch to derive the forming limit diagram (FLD) of SS304L sheet.
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