Tire Temperature Model for Real-Time Simulation
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Solution Overview
Problem
Existing tire performance simulation models are not suitable for real-time implementation on commercially available hardware and struggle to integrate with the Magic Formula, requiring extensive computational resources and parameter identification through complex measurements.
Innovation Solution
A computer-implemented tire temperature model using the Fourier law of diffusion for three-dimensional temperature distribution within the tire, considering heat sinks and sources, and averaging thermal properties to reduce computational effort, allowing for real-time calculations and integration with existing models like the Magic Formula.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a detailed three-dimensional temperature distribution model is used, then temperature prediction accuracy is improved, but computational resource requirements increase
Solution Approach 1:
The tire is divided into multiple thermal zones (contact patch, shoulder, sidewall, bead area) along the circumferential direction, with each zone having its own temperature prediction. This segmentation allows the model to capture spatial temperature variations without requiring a full three-dimensional finite element analysis, thus reducing computational burden while maintaining prediction accuracy.
Solution Approach 2:
Instead of modeling the entire three-dimensional temperature field, the patent applies thermal analysis only to the contact patch and adjacent zones where temperature effects are most critical for performance prediction. This partial action approach provides sufficient accuracy for performance modeling while significantly reducing computational resource requirements.
2Measurement precision
If a complex tire model integrating Magic Formula is used, then simulation accuracy is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal temperature prediction framework that can be integrated with various existing tire models including the Magic Formula. The thermal zone approach serves multiple purposes: predicting temperature distribution, calculating heat generation, and modifying material properties, thereby reducing the need for separate complex integration routines.
Solution Approach 2:
The model modifies material parameters (such as rubber compound properties) as functions of temperature rather than using constant values. This parameter change approach allows the Magic Formula to be adapted to varying thermal conditions through simple parameter lookup tables, avoiding complex coupled differential equations while maintaining simulation accuracy.
3Speed
If real-time calculation is implemented, then responsiveness is improved, but computational resources are consumed
Solution Approach 1:
The patent pre-calculates and stores thermal zone temperature profiles and material property variations as lookup tables that can be quickly queried during real-time simulation. This preliminary action allows the model to provide rapid temperature predictions without performing computationally intensive calculations at each time step, thus achieving real-time responsiveness with reduced computational resource consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The model efficiently predicts tire temperature distribution and tire performance, reducing computational resources and enabling real-time simulations, while maintaining accuracy by averaging thermal properties and simplifying thermodynamic problems, thus improving tire performance prediction in motorsport conditions.
Implementation Method 1
A computer-implemented tire temperature model using the Fourier law of diffusion for three-dimensional temperature distribution within the tire
Implementation Method 2
averaging thermal properties to reduce computational effort
Data Source
AI summary
A computer implemented method for simulation of tire performance of a vehicle is provided. The method includes providing a computer implemented tire model that receives as an input a vehicle velocity related parameter and generates as an output a tire driving force related parameter. To improve accuracy and performance of simulation of tire performance, a computer implemented tire property model is provided. The tire property model includes a tire temperature model that receives as an input the vehicle velocity related parameter. The tire temperature model also receives as an input from the tire model the tire driving force related parameter. The tire temperature model generates as an output a temperature parameter characteristic for the tire temperature, and transmits the tire temperature parameter to the tire model as an additional input. Systems for such simulations and tire modeling devices including computers with simulation software are also disclosed.