Study On The Tire Contact Pressure Of Heavy Truck

In this thesis, according to the tire in the actual situation set up the system dynamicmodel of tire-asphalt pavement by using ABAQUS.Research on the characteristics of thestatic and rolling tires load action to the pavement, put forward the tire ground–contactpressure model. Provide a basis for further research on mechanical behavior of asphaltpavement, analyzes the cause of early damage mechanics, extend the service life of thepavement, etc.According the Natural balance profile theory as well as the national standard “GB/T2977-2977truck tire specifications, size, pressure and load” to sure the section contourparameters of11.00R20radial tire. For the actual structure of tire, the material of tire toreasonable simplification, the following factors are taken in to accounted: the nonlinearity ofgeometry, the nonlinearity of rubber material, the nonlinearity of contact and the mechanicalproperties of composite material anisotropy. Among them, adapt the rebar unit replace therubber cord material in the model. Due to the actual structure of pavement is morecomplicated, so to simplify the structure of pavement in the model by using finite elementmethod, think in each layer materials of the pavement are isotropic elastic materials,continuous and homogeneous.Using the finite element software ABAQUS, set up the whole model of11.00R20radialtire and the structure of the4-6-12pavement.Were considered about the nonlinear boundaryconditions for the tire contact with the pavement in the model. For free air, the staticground-contact and the steady state rolling conditions using the established model for finiteelement calculation. Based on the static load conditions for research on the relationshipamong subsidence and tire pressure, and load and the relationship between the analysis resultsare compared with the test results.To verify the feasibility of tire analysis by using the finiteelement.Set up the model of subsidence and load and tire pressure. Can draw at any load andtire pressure of the subsidence by using the MATLAB software，at the same time get itsvertical stiffness of tire.Provide the basis for the vehicle dynamic, or other research. Based onthe steady state rolling condition, research the tire ground-contact pressure under different tire pressure and load, and set up the model of tire ground-contact pressure.