Simple Methods of Estimating the Stress and Strain at the Notch Root

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概要

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• An elastic-plastic analysis of notched plates subjected to tension force or bending moment was made. Based on this analysis, methods of evaluating approximately the stress and strain at the notch root were proposed. Dimensionless master curves were proposed for estimating the stress and strain concentration factors under small-scale yielding condition and the stress and strain at the notch root under large-scale yielding condition. This master-curve approach was found valid in all the cases analysed in this study. A simple formula was further developed by which the stress and strain at the notch root could approximately be calculated under load conditions below and above the gross yield stress by using the J-integral, together with a formula for estimating the J-integral. The estimated values of the notch stress and strain by this set of the approximation formulae agreed well with the results of numerical analysis.

• 一般社団法人日本機械学会の論文

著者

• OHJI Kiyotsugu

  Faculty of Engineering, Osaka University

• OGURA Keiji

  Faculty of Engineering, Osaka University

• Ogura Keiji

  Faculty Of Engineering Science Osaka University

• MIKI Noriyuki

  Faculty of Engineering Ehime University

• Ohji Kiyotsugu

  Faculty Of Engineering Osaka University

関連論文

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• The Effect of Torsional Prestrain on the Tensile and Low-Cycle Fatigue Properties of Mild Steel
• Biaxial Low-Cycle Fatigue of Anisotropic Rolled Steel Plates
• Estimation of Stress and Strain at the Notch Root in the Elastic-plastic Range using the J-integral
• Simple Methods of Estimating the Stress and Strain at the Notch Root
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• On the Anisotropy of Low-Cycle Fatigue Properties of Rolled Plates
• A Comparison of the Axial and Reversed-Torsional Strain Cycling Low-Cycle Fatigue Strength of Several Structural Materials
• Creep of Mild Steel under Periodic Stresses of Rectangular Wave : (III) Prediction of the Creep Deformation under Periodic Stresses
• Creep of Mild Steel under Periodic Stresses of Rectangular Wave : (II) Creep Deformation under Unsymmetrical Periodic Stress Waves
• Creep of Mild Steel under Periodic Stresses of Rectangular Wave
• The Elastic Analogue in Creep Stress Analysis

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