| Fatigue Life Analysis of Tire Stepped Direct-pressure Vulcanization Inner Mold |
| Received:March 29, 2022 Revised:March 29, 2022 |
| DOI：10.12136/j.issn.1000-890X.2023.11.0911 |
| Key Words: tire；stepped direct-pressure vulcanization inner mold；fatigue life；finite element analysis |
| Author Name | Affiliation | E-mail | | YANG Weimin | Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Technology | yangwm@mail.buct.edu.cn | | CHEN Hao | Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Technology | | | JIN Xiaozhe | Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Technology | | | TAN Jing | Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Technology | | | YAN Hua | Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Technology | | | JIAO Zhiwei* | Beijing University of Chemical Technology；National Engineering Laboratory of Tire Design and Manufacturing Technology | jiaozw@126. com |
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| Abstract: |
| The fatigue life of tire stepped direct-pressure vulcanization inner mold（referred to as inner mold） was analyzed by finite element method.The results showed that，the fatigue life of the inner mold was 7.682×105 times under normal working conditions，if the inner mold would work continuously 24 h a day，with a vulcanization time of 20 min each time and a 5 min interval between the two vulcanization processes，the actual working time of inner mold would be 29.2 a.Compared with traditional vulcanization capsules，the fatigue life of inner mold was significantly extended，and the vulcanization accuracy of finished tire could be improved，thereby improving the vulcanization quality. |
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