| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Mathematical modeling of tire structure vibration and radiation noise by road surface excitation has been achieved. Also, a mathematical model of aerodynamic pumping sound generation by road surface contact was constructed. As a result, more accurate prediction of the influence of main tire dimensions, structural design factors, and road surface roughness on radiated noise became possible. Further, a new technology was created to reduce tire vibrations without increasing the rolling resistance by placing non - Newtonian damping material inside the tread. As a result, creation of the next generation tire concept having large diameter, narrow width and high inflation pressure superior in both environmental and safety performance. The design concept was confirmed its validity through experiments.
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