Journal ArticleDOI
A method of elastic-plastic stress and strain calculation at a notch root
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TLDR
In this article, an energy-based method of local elastic-plastic stress and strain calculation is presented, where the theoretical stress concentration factor k t can be related to the unit elastic strain energy at a notch root.About:
This article is published in Materials Science and Engineering.The article was published on 1981-09-01. It has received 418 citations till now. The article focuses on the topics: Stress concentration & Elastic energy.read more
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A finite-volume-energy based approach to predict the static and fatigue behavior of components with sharp V-shaped notches
Paolo Lazzarin,R. Zambardi +1 more
TL;DR: In this article, an energetic approach is proposed to predict the static and fatigue behavior of components weakened by sharp reentrant corners, where the energy in a small volume of material surrounding the notch tip has a finite value and such a value is thought of as the entity that controls the failure.
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Recent developments in brittle and quasi-brittle failure assessment of engineering materials by means of local approaches
Filippo Berto,Paolo Lazzarin +1 more
TL;DR: In this article, the authors present a review of some local approaches applicable near stress raisers both sharp and blunt V-notches, which has been recently applied to assess the brittle failure of a large number of materials.
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A review of the volume-based strain energy density approach applied to V-notches and welded structures
Filippo Berto,Paolo Lazzarin +1 more
TL;DR: In this paper, a large bulk of experimental data from static tests of sharp and blunt V-notches and from fatigue tests of welded joints are presented in an unified way by using the mean value of the Strain Energy Density (SED) over a given finite-size volume surrounding the highly stressed regions.
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Some Expressions for the Strain Energy in a Finite Volume Surrounding the Root of Blunt V-notches
Paolo Lazzarin,Filippo Berto +1 more
TL;DR: In this article, the authors derived closed form expressions for the strain energy averaged in a finite size volume surrounding the root of blunt V-shaped notches under Mode I loading, which matches Williams and Creager-Paris' solutions in the particular cases of sharp V-notches or blunt cracks.
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Energy density approach to calculation of inelastic strain-stress near notches and cracks
TL;DR: In this article, an energy-based method of calculating elastic-plastic strains and stresses near notches and cracks is presented, where the strain energy density in the plastic zone ahead of a notch can be calculated on the basis of the elastic stress-strain solution.
References
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Journal ArticleDOI
Theory of Stress Concentration for Shear-Strained Prismatical Bodies With Arbitrary Nonlinear Stress-Strain Law
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Neuber's rule applied to fatigue of notched specimens
TL;DR: In this article, a method for predicting the fatigue life of notched members from smooth specimen fatigue data is presented, where inelastic behavior of the material at the notch root is treated using Neuber's rule which states that the theoretical stress concentration factor is equal to the geometric mean of actual stress and strain concentration factors.
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Elastic-plastic fracture mechanics for initiation and propagation of notch fatigue cracks
TL;DR: In this paper, the authors considered the extent of total plastic shear deformation φ to determine the initiation and propagation of a crack in a plastically deformed zone, where φp is the component of φt due to notch bulk plasticity and φe, is a linear elastic fracture mechanics (LEFM) analysis of the crack tip plasticity field.
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Verification of a neuber-based notch analysis by the companion-specimen method
TL;DR: In this article, the authors used cyclicly stabilized specimens and cyclic hardening, stress-strain hysteresis-loop shape, and material memory to predict local stress strain.