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A buckling model for flange wrinkling in hot deep drawing aluminium alloys with macro-textured tool surfaces

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Title: A buckling model for flange wrinkling in hot deep drawing aluminium alloys with macro-textured tool surfaces
Authors: Zheng, K
Lee, J
Lin, J
Dean, TA
Item Type: Journal Article
Abstract: The work described in this paper is the development of a buckling model based on the classical energy method of flange area material using a one-dimensional beam geometry assumption to predict flange wrinkling in hot deep drawing aluminium alloys with macro-textured blankholder surfaces. A series of deep drawing experiments utilising different macro-textured tool surfaces were performed to investigate the effects of process parameters and texture features on flange wrinkling. The results have shown that wrinkling occurs when the hollow dimension of radially grooved textures reached a certain magnitude dependent on process conditions. A dislocation-driven based continuum damage mechanism (CDM) material model for aluminium alloys at elevated temperatures was used to model the viscoplastic behaviour during deformation. The newly developed buckling model was validated by comparison with experimental results. The predicted results showed that the resistance to wrinkling increases with increasing forming temperature and decreasing forming speed, depending on the particular viscoplastic characteristics of the work-piece. The effects of texture ratio and draw ratio on wrinkling were found to be more significant than the effects of the temperature and strain rate. The buckling model developed in this paper can be used to model the flange wrinkling phenomena, as well as the non-isothermal feature in the hot stamping condition using the macro-textured tool surfaces.
Issue Date: 1-Mar-2017
Date of Acceptance: 16-Dec-2016
URI: http://hdl.handle.net/10044/1/82505
DOI: 10.1016/j.ijmachtools.2016.12.008
ISSN: 0890-6955
Publisher: Elsevier
Start Page: 21
End Page: 34
Journal / Book Title: International Journal of Machine Tools and Manufacture
Volume: 114
Issue: 1
Copyright Statement: © 2016 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Commission of the European Communities
Commission of the European Communities
Funder's Grant Number: 723517
NMP3-SE-2013-604240
Keywords: Science & Technology
Technology
Engineering, Manufacturing
Engineering, Mechanical
Engineering
Hot stamping
Aluminium
Macro-textured tool
Flange wrinkling
Buckling model
SOLUTION HEAT-TREATMENT
YIELD FUNCTION
SHEET
PREDICTION
BEHAVIOR
Science & Technology
Technology
Engineering, Manufacturing
Engineering, Mechanical
Engineering
Hot stamping
Aluminium
Macro-textured tool
Flange wrinkling
Buckling model
SOLUTION HEAT-TREATMENT
YIELD FUNCTION
SHEET
PREDICTION
BEHAVIOR
Industrial Engineering & Automation
0910 Manufacturing Engineering
Publication Status: Published
Online Publication Date: 2018-12-18
Appears in Collections:Mechanical Engineering
Faculty of Engineering



This item is licensed under a Creative Commons License Creative Commons