Accurate prediction of work-hardening behavior of metallic sheets using crystal-plasticity analysis and its application to sheet metal forming simulations

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289271
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Material processing/Microstructural control engineering
• Research Institution: Kyoto University
• Principal Investigator: Hama Takayuki 京都大学, エネルギー科学研究科, 准教授 (10386633)
• Co-Investigator(Kenkyū-buntansha): 高村 正人 国立研究開発法人理化学研究所, その他部局等, 研究員 (00525595) ; 宅田 裕彦 京都大学, エネルギー科学研究科, 教授 (20135528)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 結晶塑性有限要素法 / 加工硬化特性 / プレス加工 / 環境調和型加工

Outline of Final Research Achievements

The purposes of the present study were to develop crystal-plasticity models for prediction of deformation behavior of metallic sheets that are expected to be used for structural components and to apply the developed models to press forming simulations. We proposed new models that could predict deformation behaviors of various metallic materials, such as steels, magnesium alloys, and commercially pure titanium, under different loading paths accurately. The underlying deformation mechanisms were also revealed on the basis of crystalline microscopic deformation behavior using the proposed models. Moreover, we also examined a framework to utilize the proposed models for determining material parameters used in sheet metal forming processes.

Free Research Field

塑性力学