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Finite element predictions of residual stresses in cold-formed sections
Quach, W. M.1; Teng, J. G.2; CHUNG , K. F.2
2003-06-22
Conference NameThe International Conference on Advances in Structures (ASSCCA'03), Sydney, Australia, 22-25 June 2003
Source PublicationAdvances in Structures: Proceedings of the International Conference on Advances in Structures (ASSCCA'03), Sydney, Australia, 22-25 June 2003
Volume1
Pages325-331
Conference Date22-25 June 2003
Conference PlaceSydney, Australia
Publication PlaceNetherlands
PublisherA.A. Balkema
Abstract

Residual stresses in cold-formed sections may play a significant role in determining their behavior and strength. Laboratory measurements of residual stresses by destructive methods are not only time-consuming but also of limited accuracy. This paper describes a finite element-based method for predicting residual stresses in press-braked thin-walled sections, which overcomes these difficulties. The method offers a powerful tool for exploring the effect of different forming parameters on the magnitude and distribution of residual stresses so that these forming parameters can be optimized. In this method, the effects of coiling and uncoiling are accounted for analytically, with the resulting residual stresses specified as initial stresses in a subsequent finite element simulation of cold bending. Numerical results from this method are shown to agree closely with laboratory measurements, demonstrating the validity and accuracy of the method. The present method provides residual stress distributions over the cross-section as well as across the thickness, and also explains why residual stresses may differ considerably in otherwise identical sections.

Indexed ByEI
Language英語English
The Source to ArticlePB_Publication
Document TypeConference paper
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorQuach, W. M.
Affiliation1.University of Macau, Macau, China
2.Hong Kong Polytechnic University
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Quach, W. M.,Teng, J. G.,CHUNG , K. F.. Finite element predictions of residual stresses in cold-formed sections[C], Netherlands:A.A. Balkema, 2003, 325-331.
APA Quach, W. M.., Teng, J. G.., & CHUNG , K. F. (2003). Finite element predictions of residual stresses in cold-formed sections. Advances in Structures: Proceedings of the International Conference on Advances in Structures (ASSCCA'03), Sydney, Australia, 22-25 June 2003, 1, 325-331.
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