Cord-Rubber Tire Composite for Ride Comfort and High-Speed Stability
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Solution Overview
Problem
There is no established method for quantitatively evaluating the orientation of short fiber fillers in tires, which affects the understanding and achievement of ride comfort and steering stability during high-speed running.
Innovation Solution
A tire design incorporating a cord-rubber composite with a short fiber filler that has a dispersion V of 0.6 or less, where the composite includes an organic fiber cord, a topping rubber coating, and a short fiber filler, specifically cellulose nanofibers or carbon nanotubes, oriented to achieve optimal stress distribution and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the tire weight is reduced to improve ride comfort, then steering stability during high-speed running deteriorates
Solution Approach 1:
The patent uses a composite cord-rubber structure combining organic fiber cords with short fiber fillers (cellulose nanofibers or carbon nanotubes) dispersed in the rubber matrix. This composite structure provides both light weight and high strength, enabling the tire to achieve ride comfort through weight reduction while maintaining steering stability via the enhanced mechanical properties of the composite material system.
Solution Approach 2:
The patent controls the dispersion parameter V of short fiber fillers within a specific range (0.4 ≤ V < 0.6) to optimize the balance between ride comfort and steering stability. By adjusting the dispersion state and orientation of short fiber fillers, the patent achieves optimal stress distribution in the cord-rubber composite, allowing the tire to simultaneously provide comfort and stability despite reduced weight.
2Stress or pressure
If the dispersion V of short fiber filler is reduced to improve stress distribution, then manufacturing precision deteriorates
Solution Approach 1:
The patent defines a specific dispersion parameter V range (0.4 ≤ V < 0.6) that balances stress distribution and manufacturing precision. By controlling the dispersion state within this optimized range, the patent achieves effective stress distribution while maintaining feasible manufacturing precision through electron microscope-based measurement and control methods.
Data Source
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AI summary
It is an object of the present disclosure to provide a tire that achieves both ride comfort and steering stability during high speed running. Provided is a tire comprising a cord-rubber composite, wherein the tire has a tire weight (WT) of 20 kg or less, wherein the cord-rubber composite comprises an organic fiber cord, a topping rubber coating the organic fiber cord, and a short fiber filler, and wherein the short fiber filler has a dispersion V of 0.6 or less defined by the predetermined equation.