A comparative investigation on theoretical models for forming limit diagram prediction of automotive sheet metals
| Autor: | Young-Suk Kim, Thi-Bich Mac, Duc-Toan Nguyen, Quoc Tuan Pham |
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| Rok vydání: | 2021 |
| Předmět: |
Coupling
Series (mathematics) business.industry Mechanical Engineering General Mathematics Flow (psychology) Automotive industry Aerospace Engineering Ocean Engineering Mechanics Condensed Matter Physics Instability Power (physics) Forming limit diagram Mechanics of Materials Automotive Engineering Hardening (metallurgy) business Civil and Structural Engineering |
| Zdroj: | Mechanics Based Design of Structures and Machines. 51:3890-3904 |
| ISSN: | 1539-7742 1539-7734 |
| DOI: | 10.1080/15397734.2021.1945461 |
| Popis: | This study provides a coherent comparison among four theoretical models including Swift’s instability, Hill’s localized neck, Storen-Rice bifurcation analysis, and Hora’s MMFC criteria for explicitly estimating the forming limit diagram (FLD) of sheet metals. These explicit solutions for FLD are derived based on a power hardening law coupling with J2 flow theory. Accordingly, the advantages and limitations of each model are discussed from the points of view of metal physics, which appears to be a useful suggestion for selecting a proper theoretical model to evaluate FLD of sheet metals without conducting experimental tests. To verify the effectiveness of those suggestions, the predicted FLD of AA6016 and DP590 sheet materials are compared with experimentally measured data from a series of Nakazima tests. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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