| SIMULATION ANALYSIS OF TIRE INFLATION PRESSURE LOSS UNDER
SYNERGY OF TEMPERATURE AND OXIDATION |
| Chen Liang , Dong Hui Sun , Chang Da Li , Liu Ji , Te Ma , Zhi Gao |
| School of Automotive and Traffic Engineering, Jiangsu University |
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| ABSTRACT |
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The functions of the tire can be fully performed only under the appropriate inflation pressure. Tire inflation
pressure loss rate (IPLR) is an important indicator used to evaluate tire inflation pressure retention performance. When the
tire is under a rolling state, the temperature will increase leading to an accelerated oxidation process. Standard tire IPLR test
is costly and time-consuming. In order to simulate the tire IPLR under the steady rolling state, the permeability parameters of
rubbers and rubber-cord components (belts & carcass) are tested. Moreover, the oxidation reaction is coupling with the IPLR
model based on the basic autoxidation scheme (BAS). The simulation results show that the IPLR of the tire under rolling state
increases obviously. A novel calculation method of rubber oxygen consumption is proposed and applied to the oxygen
consumption of different parts of the tire. Two approaches are adopted to reduce tire IPLR based on the innerliner structure
design. This simulation method can predict tire IPLR not only under steady rolling state but also under static state and even
under tire aging condition in oven. It also provides an important model basis for tire aging and life prediction research in the
future. |
| Key Words:
Tire inflation pressure loss rate, Oxidation reaction, Temperature field, Finite element analysis, Tire aging |
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Corresponding Author.
Chen Liang , Email. 
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