Model studies of fibre breakage and debonding in a metal reinforced by short fibres
Identifieur interne : 002F71 ( Main/Exploration ); précédent : 002F70; suivant : 002F72Model studies of fibre breakage and debonding in a metal reinforced by short fibres
Auteurs : Viggo Tvergaard [Danemark]Source :
- Journal of the Mechanics and Physics of Solids [ 0022-5096 ] ; 1992.
Abstract
Forametal reinforced by short, brittle fibres the development of damage by fibre cracking or decohesion is studied, taking into account the interaction between these two types of damage. The metal matrix composite, containing a periodic array of aligned fibres, is represented in terms of a cell model, and solutions for the stress and strain fields are determined numerically. Failure at the interface is modelled in terms of a cohesive zone model that accounts for decohesion by normal separation as well as by tangential separation, whereas fibre fracture is simply represented by a critical value of the average tensile stress on a cross-section. The effect of various material parameters and of the macroscopic stress state on the two types of damage is investigated, together with the subsequent mode of void growth.
Url:
DOI: 10.1016/0022-5096(93)90081-P
Affiliations:
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