| 外轮廓和结构参数对载重子午线轮胎疲劳寿命的影响 |
| Influence of Contour and Structure Parameters on the Fatigue Life of Tuck and Bus Radial Tire |
| 投稿时间：2015-03-10 修订日期：2015-03-10 |
| DOI： |
| 中文关键词: 载重子午线轮胎 应变能密度梯度 外轮廓 结构参数 疲劳寿命 有限元分析 |
| 英文关键词: truck and bus radial tire strain energy density gradient contour structure parameter fatigue life FEA |
| 基金项目:中国博士后科学基金 |
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| 中文摘要: |
| 以载重子午线轮胎11.00R20为研究对象，用应变能密度梯度（SEDG）作为轮胎疲劳寿命的评价指标，探讨轮胎外轮廓和关键结构参数对轮胎疲劳寿命的影响。结果表明：胎圈处曲率半径减小，轮胎疲劳寿命降低，反之则提高；胎肩处曲率半径减小，轮胎疲劳寿命提高，反之则降低；采用4层带束层并合理设定胎体帘布反包端高度及其与钢丝加强层间的高度差级，能有效降低轮胎的SEDG模，从而提升轮胎的疲劳寿命。 |
| 英文摘要: |
| 11.00R20 truck and bus radial tire was taken as the research object，strain energy density gradient was proposed to evaluate tire fatigue life，and the influence of contour and structure parameters on the fatigue life of tuck and bus radial tire was investigated.The results showed that，with the radius of curvature of bead reducing，the tire fatigue life decreased，otherwise the tire fatigue life increased.With the radius of curvature of shoulder reducing，the tire fatigue life increased，otherwise the tire fatigue life decreased.With using 4 layers of belt，seting reasonable carcass turnup ends and the height difference between the steel wrie reinforcing layer and carcass turnup ends，the SEDG mode of the tires could be effectively reduced，so that the fatigue life of tire was improved. |
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