Method for determining surface stresses under the roller of a vibrating roller

Aim. Identification of the main factors for solving the surface contact problem and subsequent determination of surface stresses under the flat wheel roller in a vibration mode. Materials and Methods. The Hertz–Belyaev theory was selected as a basis for the estimation relations. The works of Kharkhuta, Zakharenko, Nosov, Savelyev and other researchers were also analyzed. The inertial component of the roller mass and a periodic nature of the impact of the external force on the soil are taken into account. Results. The basic principles of calculating surface stresses are identified. The physical significance of the coefficients that facilitate the transition from static to vibration compaction has been determined. Following the analysis, we put forward a new approach that takes into account previously unconsidered characteristics of the compaction process. In addition, the properties inherent in dispersive soil are taken into account. Conclusion. The paper studies the interaction of the roller wheel with the soil in terms of arising surface stresses. The proposed method characterizes surface stresses depending on the variables of time and roller speed. The result of the computing experiment is compared against the actual data.