| Analysis of Stiffness and Fatigue Life of Top Cover of Truck and Bus Tire Mold |
| Received:August 20, 2017 Revised:August 20, 2017 |
| DOI：10.12136/j.issn.1000-890X.2019.04.0307 |
| Key Words: tire mold；top cover；stiffness；fatigue life；finite element analysis |
| Author Name | Affiliation | E-mail | | HU Haiming | Qingdao University of Science and Technology | 978004588@qq.com | | WANG Shasha* | Qingdao University of Science and Technology | 978004588@qq.com |
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| Abstract: |
| Based on the stress analysis of the top cover of truck and bus tire mold under the curing condition and the calculation theory of circular thin plate in the theory of plate and shell，the formula for calculating the maximum deflection and stress of top cover was obtained. The finite element simulation was used to verify the stiffness of top cover，and the minimum thickness and fatigue life of the top cover with different materials were obtained by calculation. The results showed that，the minimum thickness of the top cover with different material was different.The maximum deformation of 45# steel and Q235 steel top cover was reduced by 0.05 mm，which met the design requirements of top cover stiffness.Compared with Q235 steel top cover，the minimum thickness of 45# steel top cover was 1 mm less，the fatigue life was extended by 2.09%，the service life was extended by 2.22%，and the 45# steel top cover had better performance. |
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