Influence of technological parameters on the behaviour in operation of the asphalt milling equipment

Abstract

Within the work will be studied, in particular, the aspects related to the mechanical stresses that manifest themselves at the level of the cutter teeth used to strip the worn asphalt clothing. Studies in the field have focused on the interaction between the teeth of the milling drum and the asphalt clothing. The literature provides information and results focused, especially, on the aspects related to the way in which the dislocation of the asphalt concrete components occurs (the mixture of aggregates and filler / bitumen in solid state) under the action of the milling tooth. The authors present a method of simulating (using the combination of FEM-DEM numerical methods) of the cutting process by which it is ensured the highlighting of the developed tensions at the level of the active part of the tooth. In this way, it is attempted to bring to the fore the operating conditions specific to the milling equipment and to identify how they influence the interaction between the asphalt and the active part of the cutter teeth.