Experimentally determined material parameters for temperature prediction of an automobile tire using finite element analysis.

[摘要] ENGLISH ABSTRACT: The following report documents the experimental determination and validationof a tires material parameters for use in a thermalnite element simulationprocedure. Uni-axial tensile tests were performed on tire samples. Theforce displacement response of each was used to determine material propertiesby means of direct curvets and iterative numerical procedures. Equivalent nite element simulation models were used to validate the properties. Hysteresisbehaviour of the rubber regions were identi ed by dynamic mechanicalanalysis. Material de nitions were incorporated into existingnite elementmodels developed by Maritz (2015) to predict the steady-state heat generationand temperature distribution within a tire due to hysteresis. The useof material properties from literature resulted in inaccurate model predictionswhen compared to experimental measurements. A series of validation experimentsand equivalent simulations were performed in order to evaluate theresulting structural response. The updated models provided accurate predictionsof structural deformation and tread contact pressure distributions undera variety of loading conditions. Experimental rolling tire temperature measurements were taken on a test bench. A comparison of the results with those obtained from the equivalent thermal models revealed remarkable similarities and improvements.

[发布机构] Stellenbosch University