Tire Noise Simulation Reducing Computational Time
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current computerized simulation methods for evaluating tire noise performance require excessive computational time due to the need to constantly redefine the fluid domain based on the changing shape and position of the tire's ground contacting area, leading to lengthy calculations.
Innovation Solution
A method that generates a finite element model of the tire and road surface, performs a rolling simulation, stores chronological data for the tire's outer surface, defines a fluid domain with a small gap between the tire and road surface, and computes physical quantities using this data, reducing the need for frequent redefinition of the fluid domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the fluid domain is redefined according to the changing shape and position of the ground contacting area in each time step, then the accuracy of tire noise performance evaluation is improved, but the computational time is excessively long
Solution Approach 1:
The patent pre-calculates and stores the chronological data of the outer surface of the tire model before conducting the fluid simulation. This preliminary action allows the fluid domain to be defined based on pre-existing data rather than recalculating the tire geometry during each fluid simulation time step, thereby maintaining accuracy while significantly reducing computational time
Solution Approach 2:
The patent extracts only the necessary chronological data of the outer surface of the tire model from the rolling simulation results. By taking out only the essential geometric information needed for fluid domain definition rather than re-simulating the entire tire rolling process, the method reduces computational burden while preserving the accuracy needed for noise performance evaluation
2Measurement precision
If the ground contacting area is computed in steps of a minute unit time to define the fluid domain, then the accuracy of fluid simulation is improved, but the computational complexity increases
Solution Approach 1:
The tire rolling simulation is performed in advance to obtain chronological data of the outer surface, which is then stored for use in the fluid simulation. This preliminary computation separates the complex tire deformation calculation from the fluid simulation, reducing the computational complexity of the fluid domain definition while maintaining accuracy through the use of pre-computed geometric data
Solution Approach 2:
The patent uses the chronological data of the outer surface obtained from the rolling simulation as a copy or representation of the actual tire geometry during fluid simulation. Instead of re-computing the complex tire deformation in each fluid simulation step, the method uses this pre-generated geometric data to define the fluid domain, thereby reducing computational complexity while preserving simulation accuracy
Data Source
AI summary
A computerized simulation method for evaluating a tire performance is disclosed. Firstly, a simulation of a rolling tire is made by contacting a tire model with a road surface model, and chronological data about node points of the tire model which node points appear in the outer surface of the tire model during rotating are stored. Then, a domain of a fluid is defined, and a simulation of the fluid is made by the use of the chronological data, wherein a small gap is formed between the tire model and the road surface model, and the fluid domain is also defined in the gap.