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Similarities between Small-Scale Yielding interfacial free – edge joint and crack tip field

Domenii publicaţii > Stiinte ingineresti + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Marsavina L., Nurse A.D.

Editorial: University of Nis, Facta Universitatis, Series: Mechanics, Automatic Control and Robotics, 3 (13), p.623 - 634, 2003.


The problem of the small-scale yielding (SSY) plane-strain asymptotic fields for the interfacial free-edge joint singularity is examined in detail and comparisons are made with the interfacial crack tip. The geometries are idealised as isotropic elasto-plastic materials with Ramberg-Osgood power-law hardening properties bonded to a rigid elastic substrate. A fourth-order Runge-Kutta numerical method provides solutions to fundamental equations of equilibrium and compatibility. Asymptotic fields for stress and displacement are developed for a range of hardening parameters and comparisons made between the joint and crack geometries. It is shown that there is some significant similarity between the asymptotic fields particularly for perfectly plastic behaviour.

Cuvinte cheie: Small scale yielding, free edge bonded joint, interface crack