| Research on Fatigue Lives of Tire under Different Working Conditions |
| Received:December 26, 2022 Revised:December 26, 2022 |
| DOI：10.12136/j.issn.1000-890X.2024.09.0643 |
| Key Words: tires；fatigue life；finite element analysis |
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| Abstract: |
| Under the working conditions, the tire would generally bear more complex periodic alternating loads，and the fatigue damage caused by the alternating loads greatly affects its lives.At present, it is difficult to predict the lives of the tire under different working conditions.Taking 205/55R16 PCR tire as an example, with finite element analysis，the alternating loads of each component of the tire under different working conditions were calculated, and the typical spectrum segments for fatigue calculation were obtained.On this basis, the fatigue lives of the tire under different working conditions was obtained by rain flow counting method and cumulative damage method with Fe-safe software.The results showed that the vicinities of the tread groove and the belt layer were fatigue risk areas of the tire under rolling conditions.The fatigue lives of the tire under braking and driving conditions were shorter than that under free rolling condition，and the difference was most obvious for the tread compound.The fatigue life of the tire under the cornering condition is the shortest，and the fatigue life of the sidewall at the deflection direction was larger than that of the opposite dierection. |
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