Vertical wall formation and material flow control for incremental sheet forming by revisiting multistage deformation path strategies

Liu, Zhaobing, Li, Yanle and Meehan, Paul Anthony (2013) Vertical wall formation and material flow control for incremental sheet forming by revisiting multistage deformation path strategies. Materials and Manufacturing Processes, 28 5: 562-571. doi:10.1080/10426914.2013.763964


Author Liu, Zhaobing
Li, Yanle
Meehan, Paul Anthony
Title Vertical wall formation and material flow control for incremental sheet forming by revisiting multistage deformation path strategies
Journal name Materials and Manufacturing Processes   Check publisher's open access policy
ISSN 1042-6914
1532-2475
Publication date 2013-05-01
Sub-type Article (original research)
DOI 10.1080/10426914.2013.763964
Open Access Status DOI
Volume 28
Issue 5
Start page 562
End page 571
Total pages 10
Place of publication Philadelphia, PA, United States
Publisher Taylor & Francis
Language eng
Subject 2500 Materials Science
2211 Mechanics of Materials
2210 Mechanical Engineering
2209 Industrial and Manufacturing Engineering
Abstract In this article, multistage deformation path strategies for single point incremental forming (SPIF) are revisited with the purpose of controlling material flow (improving sheet thickness distribution) and forming a vertical wall surface for cylindrical cups. It is noted that stretching and thinning are two main deformation modes during SPIF. How to control material flow in an optimal way is a key point for successful forming. Multistage incremental forming shows more advantages than single-stage forming, especially dealing with shapes with steep walls. In this study, three basic multistage deformation path strategies have been proposed, that is: A. incremental part diameter; B. incremental draw angle; and C. incremental part height and draw angle. Those strategies and their combinations have been evaluated in terms of formability and compared in order to understand the material allocation mechanism and optimize the multistage forming process. In addition, approximate plane-strain analysis models have been given to provide formability predictions between single-stage and multistage strategies, and between strategies B and C, respectively. The prediction results show good agreement with the experimental results. It is demonstrated that the strategic combination A + B is the optimal way to achieve the forming target.
Keyword Aluminum
Deformation
Flow
Formability
Forming
Fracture
Material
Multistage
SPIF
Thickness
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
 
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