The roles of yield function and plastic potential under non-associated flow rule for formability prediction with perturbation approach Hu, Q and Yoon, Jeong Whan 2020, The roles of yield function and plastic potential under non-associated flow rule for formability prediction with perturbation approach, in IDDRG 2020 : Proceedings of the 39th International Deep-Drawing Research Group Annual Conference 2020, IOP Publishing, Bristol, Eng., pp. 1-7, doi: 10.1088/1757-899X/967/1/012027. Attached Files Name Description MIMEType Size Downloads Title The roles of yield function and plastic potential under non-associated flow rule for formability prediction with perturbation approach Author(s) Hu, Q Yoon, Jeong Whan orcid.org/0000-0002-7616-5253 Conference name International Deep-Drawing Research Group. Conference (39th : 2020 : Online from Seoul, South Korea) Conference location Online from Seoul, South Korea Conference dates 2020/10/26 - 2020/10/30 Title of proceedings IDDRG 2020 : Proceedings of the 39th International Deep-Drawing Research Group Annual Conference 2020 Editor(s) [Unknown] Publication date 2020 Series International Deep-Drawing Research Group Conference Start page 1 End page 7 Total pages 7 Publisher IOP Publishing Place of publication Bristol, Eng. Keyword(s) perturbation approach non-associated flow rule (non-AFR) yield function plastic potential function Summary In this study, the perturbation approach for predicting material's forming limit strains under non-associated flow rule (non-AFR) is proposed. The influence of yield function and plastic potential function on the forming limit curve (FLC) evaluated by the perturbation approach are discussed through analyzing the normalized growth rate of a perturbation. In the framework of non-AFR, Hill'48 and Yld2000-2d are chosen for AA5754-O. The results show that the left side of FLCs predicted with the different forms of yield function and plastic potential nearly overlap. Hence, it is concluded that the yield function and plastic potential have a negligible influence on the forming limit strain under a negative strain path. However, the FLC under a positive strain path is principally dependent on the relationship between strain ratio β and stress ratio α, which can be determined by the plastic potential. Additionally, in comparison to the FLC under AFR, an increase in the forming limits strain is observed near the plain strain region, when the derivative of the normalized yield function concerning α is positive and vice versa. ISSN 1757-8981 1757-899X Language eng DOI 10.1088/1757-899X/967/1/012027 Indigenous content off HERDC Research category E1 Full written paper - refereed Free to Read? Yes Persistent URL http://hdl.handle.net/10536/DRO/DU:30146487 Document type: Conference Paper Collections: Faculty of Science, Engineering and Built Environment School of Engineering Open Access Collection Related Links Link Description Link to full-text (open access)     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au. Versions Version Filter Type Thu, 07 Jan 2021, 11:44:50 EST Thu, 07 Jan 2021, 11:46:08 EST Fri, 08 Jan 2021, 04:01:45 EST Fri, 08 Jan 2021, 05:06:25 EST Wed, 24 Feb 2021, 14:44:40 EST Wed, 24 Feb 2021, 14:46:08 EST Wed, 24 Feb 2021, 15:00:49 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 21 Abstract Views, 2 File Downloads  -  Detailed Statistics Created: Thu, 07 Jan 2021, 11:46:08 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.