Simulation of elastic-plastic heterogeneous rolling contact
[K.Amuzuga,”Damage mechanism related to plasticity around heterogeneous inclusions under rolling contact loading in hybrid bearings ceramic/steel”, University of Lyon, 2016 ]
 

Equivalent stress field under a rolling contact over a visco-elastic heterogeneous body
[K.E. Koumi,”Modeling contact between heterogeneous materials: application to blade/disk contact”, University of Lyon PhD, 2015

Semi-analytical methods are a class of numerical methods, used in particular for solving contact problems, enabling rapid resolution of complex problems. For the past ten years, the team has been developing these methods, mainly within the Isaac code, as alternatives to classical methods such as finite elements, for solving contact problems between materials with highly non-linear behavior. Today's integrated developments enable the resolution of contact problems between bodies with plastic, heterogeneous or anisotropic behavior, and under rapid or dynamic loading (viscoelastic behavior). Numerous applications have been developed in the fields of rolling elements (rolling fatigue, effect of overloads), fretting stresses (blade-disc contact in aeronautical turbines), contact between composite materials, impact (shot blasting) or aging of pavements, for example.