Study Of UniTire Modeling Method Based On Tire Design Parameters

Car tire as the only part of the car connect with the road have an important impact onthe operational stability of the car and ride．Establish a simple and high precision tire modelhave an great significance with regard to Vehicle dynamics research．Tire model for vehicledynamics research is mainly theoretical model, semi-empirical models and empirical models,The semi-empirical and empirical models need to be got through the tire test．In real life，Constrained by the test conditions, the costs and cycle，Tire test difficult to proceedsmoothly．People began to seek a way that the tire mechanical properties can be obtainedthrough virtual test．Finite element model is a theoretical model，Tire UniTire modelObtained by Kong Hui Guo academician research have High accuracy in the expression ofthe mechanical characteristics of the tire. Therefore this article is necessary to usehigh-precision finite element model simulation of the mechanical properties of the tire.Having to fight the Tire UniTire model through Parameter identification for tire modelvehicle matching research. Achieving method from tire design parameters to UniTiremodeling.development to today，complex Geometry，great nonlinear Material，These featuresmake the tire difficult on the finite element method．Tire finite element model shouldconsider both the accuracy of the tire and the calculation speed．The tire structure, tire andrim assembly and the process of movement of the tire and the road surface need a truereproduction in the finite element software．In the paper，Establishing a tire finite element model with the geometric model, materialmodel, friction model．Boundary conditions and load constraints should be considered in thetire．According to the research content．Mainly carried out tires virtual testing static stiffnessand steady-state cornering roll virtual test．Do comparison between mechanical propertiesand test data.Verify finite element model of tire，like this Mainly carried out the followingresearch：Firstly，The tire modeling parameters of the materials needed for the sensitivity analysis carry on analysis．Increasing and decreasing one of the parameters，Conduct steady-statecornering test，Contrast Tire Mechanical Properties，Informed that their relative impactparameters．obtaining the tire modeling parameters have the importance of great significance．Secondly，tires in the steady-state roll conditions two different sports get the tiremechanical properties are study different．In ABAQUS，Two movements applied the force tothe tire differently．Affect the mechanical characteristics of the tire．After solver extract inthe pavement roll real tire mechanical characteristics Contrast with tire mechanicalcharacteristics of the tire roll. Both lateral force almost consistent. Information the two sportsto achieve just a tire condition.To strengthen the use of the finite element model of the tire, Study on The predictiveability of the finite element model of tire. Tire finite element model based on proven, largeload Tire Mechanical Properties fit through small load tire mechanical properties of thesteady-state cornering. Virtual test data Contrast with test data. Validating the model’spredictive ability. We can see that in a certain range of tire finite element model has goodpredictive ability.Actually required mechanical properties at different tire pressure used for vehiclematching. Finally tire test replaced by virtual simulation get the tire mechanical properties atdifferdent tire pressure. Parameter identification get the tire UniTire model, Obtaining fromthe tire design parameters to the mechanical properties of the tire can be achieved.