Moving surfaces and interfaces : application to damage, fracture and wear contact
Résumé
The full scenario of the degradation of solids under mechanical loading is described by
modelling the gradual loss of rigidity. This common approach is purely local. Another way to describe
the damage evolution is to consider the propagation of the surface separating sound material and damaged
material. When this surface is moving, a flux of matter is induced, that is useful for describing the
loss of material during wear mechanisms or brittle fracture. The article proposes modelling of moving
surface and interface in order to describe such behaviours. The problem of evolution is written, analysis
of stability and bifurcation of the propagation is also presented. Applications to brittle fracture,
transition from fracture to damage and wear contact are briefly investigated.