A Path Independent Forming Limit Criterion for Sheet Metal Forming Simulations

A new strain-based forming limit criterion is proposed to assess the localized necking failure for sheet metal forming simulations when deformation paths deviate significantly from linearity. Different from the traditional strain-based Forming Limit Diagrams (FLD) in terms of major and minor strains, the new FLD is constructed based on effective strains and material flow direction at the end of forming. This new criterion combines the advantages of stress-based FLD for its path-independence and the traditional linear strain path FLD for its easy interpretation. The proposed FLD is validated through both theoretical prediction with Marciniak-Kuczynski (M-K) model and available experimental data in literature, and its relationship with stress-based FLDs is discussed.

• Record URL:
  • https://doi.org/10.4271/2008-01-1445
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19463979
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Zeng, Danielle
  • Chappuis, Laurent
  • Xia, Z
  • Zhu, Xinhai
• Conference:
  • SAE World Congress & Exhibition
  • Location: Detroit Michigan, United States
  • Date: 2008-4-14 to 2008-4-17
• Publication Date: 2008-4-14

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References;
• Pagination: pp 809-817
• Serial:
  • SAE International Journal of Materials and Manufacturing
  • Volume: 1
  • Issue Number: 1
  • Publisher: SAE International
  • ISSN: 1946-3979
  • EISSN: 1946-3987
  • Serial URL: https://www.sae.org/publications/collections/content/E-JOURNAL-05

Subject/Index Terms

• TRT Terms: Deformation; Deformation curve; Failure analysis; Forming; Sheet metal; Simulation; Steel; Ultimate load design
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01637159
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2008-01-1445
• Files: TRIS, SAE
• Created Date: May 31 2017 4:09PM