PLANE-STRAIN FLOW LOCALIZATION IN TENSION BLOCKS OBEYING STRAIN-GRADIENT-DEPENDENT CONSTITUTIVE EQUATION
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概要
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Plane-strain dynamic flow localization in tension blocks under a wide range of deformation rates has been investigated numerically.The material is characterized by a thermo-elasto-viscoplastic constitutive equation with strain-gradient-dependent flow stress.The mixed type variational principle for the corresponding materials is developed to satisfy this continuity requirement of the higher-order derivative of velocity.In this variational principle, the velocity and representative strain rate are regarded as independent variables.The finite element method developed using the variational principle has been employed to explore the effects of deformation rate applied, and shape and size of the blocks on the flow localization behavior.
- 社団法人日本材料学会の論文
- 1995-12-15
著者
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TOMITA Yoshihiro
Faculty of Engineering, Kobe University
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Fujimoto T
Kobe Univ. Mercantile Marine
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FUJIMOTO Takehiro
Graduate School of Science and Technology, Kobe University
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Tomita Yoshihiro
Faculty Of Engineering Kobe University
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Tomita Yoshihiro
Faculty Of Engineering Fukui University Of Technology
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FUJIMOTO Takehiro
Graduate School of Maritime Sciences, Kobe University
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