OS0306 結晶塑性モデルによる純マグネシウムの局所くびれ挙動解析(非立方晶型金属材料の変形現象とそのモデル化,オーガナイズドセッション)

概要

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Plastic formability of HCP metal has disadvantage comparing with FCC and BCC because HCP has few number of active slip systems, typically three on the early stage of deformation at room temperature, and other slip systems have the higher critical resolves shear stress. To improve the formability of HCP, the development of a numerical procedure based on the multiscale modeling is expected. Polycrystal information such as texture In this study, Local necking behavior is the important phenomenon to trigger ductile failure of metal materials. Therefore, in this study, a macro-micro coupled analysis scheme based on the homogenization method is utilized for HCP materials and a macroscopic necking behavior caused by strain localization is analyzed. The effects of microstructures on the macroscopic strain localization are discussed.
一般社団法人日本機械学会の論文
2009-07-24