Finite Element Analysis And Experimental Study On Radial Truck Tire

Taken11.00R20radial truck tire as an example, with the help of pressure mapping system and nonlinear finite element code ABAQUS, a series of studies and analyzes have been carried out by experiments in combination with finite element simulation.Firstly, in order to ensure the accuracy and reliability of the material model, we studied the method to obtain material parameters for rubberlike hyperelastic constitutive model. After comparison Yeoh model with Ogden three-order model, we find that the former is more suitable for describing the rubber constitutive behavior in finite element analysis of tire when fully considering the accuracy and computational efficiency.Secondly, various characteristics of11.00R20radial truck tire have been measured by the experiment, such as inflated section width, inflated outer diameter, sinkage and contact pressure distribution, etc. Footprint pressure distribution has also been measured by the pressure mapping system. Furthermore, we compare these results with those obtained by the finite element models of tire with complex tread patterns using ABAQUS. It is shown that the simulation results are in good agreement with the experiment.Thirdly, the force distribution of steel cords has been investigated by comparison between the tire without pattern and the tire with tread pattern. It is shown that tread pattern should be taken into consideration when we pay attention to crown. Otherwise, if only focusing on bead region, we should ignore tread pattern to reduce the difficulty of the modeling process and to shorten calculation time. Force distributions of steel cords of the tire with tread pattern have been investigated in this study. Furthermore, under different overloading cases and different camber angles, force distribution of steel cords and some other basic characteristics, such as contact area, the contact pressure distribution, stiffness curve, strain energy density, etc. are exhibited.Finally, circumferential force distributions of steel cords have been studied in braking and driving states. After the analysis of strain energy density and contact pressure distribution, we find that the braking force of the tire mainly comes from transverse blocks’front end and the driving force main from transverse blocks’rear end. For a rolling tire, the bead, shoulder, lower sidewall and the block edge region show much higher strain energy density, it may lead to damages in these regions, such as split in shoulder and lower sidewall region, tread blocks’peeling off.In summary, an appropriate rubber-like hyperelastic material constitutive model is selected to fit the material parameters for the finite element analysis of tire. The finite element model of the tire with complex tread pattern has constructed. A series of characteristics have been studied under static, overloading, different camber angles, braking and driving states. We have achieved accurate and reliable results. It is important for impelling the design and evaluating the performance of the radial truck tire.