Abstract
A simplified method for estimating the elastoplastic stress and strain distribution on 60°V notch section from a result of elastic analysis was presented. Elastic and elastoplastic analyses of 60°V notched bars and plates subjected to tensile force were carried out by FEM. It was found from these analyses that the distributions on notch section of equivalent strains obtained from equivalent stresses, stress ratios and strain ratios in elastic condition were analogous to those distributions in elastoplastic condition. The proposed simplified method was based on these analogies, the total strain theory and equilibrium condition of axial force. Good estimated results of the stress and strain distribution, the maximum notch strain and the plastic zone size were obtained. The maximum notch strain estimated by the simplified method was also compared with that by Neuber's and Glinka's methods.
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