Abstract
The traveling performance of off-the-road vehicles, such as exploration rover and construction machineries, significantly depends on an interaction between the ground and traveling devices since inelastic ground deformation and frictional sliding phenomena are induced by their movement. Furthermore, the tire-soil interaction problem falls within the framework of moving boundary problems; therefore, it is difficult to treat the contact condition. In general, wheels having surfaces with an algorithmic structure called texture are used in a steadily widening range of fields because newer designs and controls require high-performance mechanical systems that utilize the textured surfaces. Needless to say, textured surface causes anisotropic frictional behaviors. To rationally describe anisotropic frictional sliding behavior, we formulate an anisotropic friction model with the orthotropy and rotation of a sliding surface based on the elastoplastic theory and the subloading-surface concept. In this study, we conduct the finite element analysis of anisotropic frictional sliding between tire and ground by using an acceptable frictional model describing the effect of texture.
