Determination of strain criterion of Portevin-Le Chatelier effect for aluminum alloy sheets

According to the deformation state in skin stretch forming, an experiment was investigated to determine the critical strain, which make the slip line occur, and the strain criteria under different strain paths are obtained. The uniaxial tension tests of different specimens were carried out to determ...

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Published inTransactions of Nonferrous Metals Society of China Vol. 16; no. A03; pp. 1499 - 1503
Main Author 万敏 韩金全 金海霞 伍惠 董锦亮 李兵 顾伟
Format Journal Article
LanguageEnglish
Published School of Mechanical Engineering and Automation, Beihang University, Beijing 100083, China%Chengdu Aircraft Industrial Co Ltd, Chengdu 610092, China 01.12.2006
Subjects
应变分析
有色金属
金属加工
铝合金
airplane skin
strain path
slip line limited curve(SLC)
PLC effect
stretch forming
aluminum alloy
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ISSN1003-6326

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Summary:According to the deformation state in skin stretch forming, an experiment was investigated to determine the critical strain, which make the slip line occur, and the strain criteria under different strain paths are obtained. The uniaxial tension tests of different specimens were carried out to determine the critical strains of different strain paths. Then, the slip line limited curve（SLC） is available from these critical strains. Two kinds of aluminum alloys, 2024-T3 and 2524-T3, were studied, and two SLCs are gained. The application of the SLC to an airplane skin stretch forming simulation was investigated, and the results show that the SLC can be used to control the slip lines occurring in practice.
Bibliography:airplane skin
43-1239/TG
aluminum alloy
strain path
PLC effect
slip line limited curve（SLC）
stretch forming
TG146.21
aluminum alloy; PLC effect; strain path; slip line limited curve（SLC）; stretch forming; airplane skin
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1003-6326