Numerical simulation of ductile fracture behavior for aluminum alloy sheet under cyclic plastic deformation

A numerical analysis of mechanical behavior of aluminum alloy sheet under cyclic plastic deformation was investigated. Forming limit at fracture was derived from Cockcroft-Latham ductile damage criterion. The strain path of bending center of incremental roller hemming could be accepted as a kind of...

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Published inTransactions of Nonferrous Metals Society of China Vol. 21; no. 7; pp. 1595 - 1601
Main Authors HU, Xing, ZHAO, Yi-xi, LI, Shu-hui, LIN, Zhong-qin
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2011
Subjects
aluminum alloy
Aluminum base alloys
Bending
China
Computer simulation
cyclic plastic deformation
ductile damage
Ductile fracture
incremental forming
Numerical analysis
Plastic deformation
Rollers
cyclic plastic deformation
ductile damage
incremental forming
aluminum alloy
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Summary:A numerical analysis of mechanical behavior of aluminum alloy sheet under cyclic plastic deformation was investigated. Forming limit at fracture was derived from Cockcroft-Latham ductile damage criterion. The strain path of bending center of incremental roller hemming could be accepted as a kind of plane strain bending deformation process. Incremental rope roller hemming could be used to alleviate ductile fracture behavior by changing the stress state of the hemming-effected area. SEM observation on the fracture surface indicates that cyclic plastic deformation affects ductile fracture mechanism.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1003-6326
DOI:10.1016/S1003-6326(11)60902-3