Micromechanical modeling of low cycle fatigue under complex loadings. I: Theoretical formulation. II: Applications
type: Item
instance of: scholarly article
title: Micromechanical modeling of low cycle fatigue under complex loadings. I: Theoretical formulation. II: Applications
zbMATH Open document ID: 0888.73046
DOI: 10.1016/S0749-6419(96)00043-5
author: J. Ning
published in: International Journal of Plasticity
publication date: 1997-10-20T00:00:00Z
review text: A micromechanical model of the early fatigue damage initiation is proposed based on the slip theory. For each slip system, a local micro-damage variable is introduced to describe globally all phenomena related to the level lower than the crystallographic slip system, such as dislocations, atoms, molecules, lattice defects, etc. of FCC polycrystalline materials. This transgranular damage variable is fully coupled with micro inelastic constitutive equations. It is supposed that the local damage appears when the dislocation density reaches some critical values. The obtained model describes the cyclic behavior of metallic materials under proportional and non-proportional loading paths neglecting the quasi-unilateral effect as well as the localization of the fatigue damage on the free surface of the specimen. A number of numerical tests are carried out to demonstrate the possibilities of the model.
Mathematics Subject Classification ID: 74R99
Mathematics Subject Classification ID: 74A60
Mathematics Subject Classification ID: 74M25
zbMATH DE Number: 1077129
zbMATH Keywords: slip theory
zbMATH Keywords: local micro-damage variable
zbMATH Keywords: FCC polycrystalline materials
zbMATH Keywords: transgranular damage variable
zbMATH Keywords: dislocation density
MaRDI profile type: Publication
full work available at URL: s0749-6419(96)00043-5
OpenAlex ID: W1967013268
description: scientific article; zbMATH DE number 1077129