Rigid-Plastic Finite Element Method Using Rate-Type Constitutive Equation

• TOMITA Yoshihiro

• SHINDO Akio

• GOTOH Hirokazu

• CHU Man-Seok

抄録

The rigid-plastic finite element method is frequently used to predict the deformation behavior of the materials during the forming processes. The constitutive equation employed is usually restricted to a flow-type one so that the normality of the strain rate to the yield surface is entailed. Thus, the deformation cannot follow the abrupt change in stress history. This often yields the overstabilization of the deformation. In this paper, in order to overcome this situation, a rate-type constitutive equation with a one-to-one relation between the stress rate and the strain rate is employed, and the formulation of the rigid-plastic finite element method is presented. The method is applied to the prediction of the flow localization of the strip under tension. The features of the present results are clarified by comparing the results with those due to J2-flow and the corner theory.

収録刊行物

• JSME international journal. Ser. 1, Solid mechanics, strength of materials

  JSME international journal. Ser. 1, Solid mechanics, strength of materials 32 (1), 107-112, 1989

  一般社団法人 日本機械学会

キーワード

• Plasticity
• Rate-type Constitutive Equation
• Rigid-Plastic Finite Element Method
• Strain Localization

詳細情報

• CRID: 1390282680410312320
• NII論文ID: 110002348267
• NII書誌ID: AA10680585
• DOI: 10.1299/jsmea1988.32.1_107
• ISSN: 09148809
• Web Site: https://www.jstage.jst.go.jp/article/jsmea1988/32/1/32_1_107/_pdf
• 本文言語コード: en
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可