Criterion and Mechanical Characteristics of the Initial Critical Softening Point of Porous Materials

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概要

• 論文の詳細を見る

• This paper deals with the criterion and mechanical characteristics of the initial critical softening point of porous materials under different loading triaxiality. First, the concept of the initial critical softening point (hereafter abbreviated by ICSP) is defined. The close relations between the ICSP and other important phenomena, such as the failure initiation, void coalescence, localization, instability and ductile fracture in a porous material element are carefully annotated. Second, a criterion for predicting the ICSP is suggested and examined on the basis of a new rigid plastic constitutive model published previously. Third, the mechanical characteristics at or around the ICSP are systematically analyzed by numerical calculations. This research reveals the potentiality of applying the ICSP and corresponding criterion to control the fracture initiation and strength distribution in porous materials and prevent the materials from ductile fracture during plastic forming.

• 一般社団法人日本機械学会の論文
• 2000-01-15

著者

• Yin Yajun

  Department Of Engineering Mechanics Tsinghua University

• XUE Mingde

  Department of Engineering Mechanics, Tsinghua University

• Xue M

  Tsighua Univ. Beijing Chn

• Xue Mingde

  Department Of Engineering Mechanics Tsinghua University

• Yin Yajun

  Department of Engineering Mechanics

関連論文

• Micro Damage Evolution Analysis of Target Impacted by Projectile (Solid Mechanics and Material Engineering)
• LRI Model-Lower-Bound Rigid-Plastic Constitutive Model for Isotropic-Hardening Materials with Micro Void Evolution Process
• Lower-bound and Upper-bound Rigid-plastic Constitutive Models for Porous Materials : Comparison and Examination
• Criterion and Mechanical Characteristics of the Initial Critical Softening Point of Porous Materials

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