| Tire is one of the most important parts of the car, The stable and reliable operation of the tire is directly related to the vehicle reliability and personal safety issues. while the Stability and reliability gradually improved, comfort issues also need to develop. Tire FEA technology continues to develop, but its fluid dynamics research is almost a blank. As to environmental protection, the cars spread gradually, the tire rolling noise problems generated and increased seriously and constitutes a part of environmental pollution, it affected people’s normal life. As to Economic development, European and American countries not only improves the standard of tire technology, but also update requirements on tire noise performance. So there’re more restrictions to our country’s tire manufacturing industry. The external flow field characteristics of car tire rolling process is the main cause of tire noise, Therefore, the flow field analysis and evaluation of tire noise is particularly urgent. This paper simulated the external flow field of the tire rolling thus promoting tire noise performance assessment. This study provides preliminary basis for further realization of tire noise reduction and the optimization design of the tire.The tire’s Rolling is a complex process, there is a series of uncertainties impact on external flow field. And this impact is difficult to achieve efficient numerical simulation whether by ordinary finite element method or straightforward computational fluid dynamics methods. In this paper, it analyzes the basic principles of fluid-structure interaction, and utilize solid to fluid-way coupling on the outer wall of the rolling tire, combines the finite element and CFD calculation effectively. This numerical simulation method can simulate the real flow field regional conditions of the tire rolling process effectively.In this issue, From the perspective of CFD(Computational Fluid Dynamics), Choose the all steel radial truck tire12.00R20as the research object which is rolling at the multiple conditions. combined with ABAQUS finite element analysis, achieved a transient numerical simulation of tire rolling process of the external flow field characteristics. Its numerical simulation utilized a discrete way, And studied the unstructured grid data transfer mode, completed the data updates after remeshing in the form of interpolation weights, ensured the fluid compute step by step.At the same time, this paper conducted a comprehensive Secondary development to fluid dynamics analysis software and related features, Integrated a set of packaging process which is available for automation control and operation. The program has specifically targeted and good stability. In this paper, through the platform of VC++6.0, it packaged FEA data, Gambit software, Fluent software, Coupling process program and Grid data transfer program, Automated analysis of tire rolling three-dimensional numerical simulation. Ideas for program development:firstly, classified the Data of tire finite element results. Then, Insert the relevant data into automated modeling and remeshing of the Gambit software and FSI. After the preliminary calculations in Fluent, data integration, grid updates, data transfer and Fluent numerical computing after grid replacement. This process loops until the completion of the entire numerical.By the calculating and analysis of the tire which is under rolling condition.. It verified the Correctness and rationality of the analyze ideas and the program developed of this paper, it analyzed and demonstrated the complexity of the transient aerodynamic characteristics of the tire laws in the process of rolling forward from a different perspective, And made a preliminary exploration of Fluid dynamics analysis for tires study. |
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