建立了非连续接触下筒体-滚圈接触压力的计算模型，得出了滚圈弯矩及弯曲应力计算公式。应用名义应力法和局部应力应变法，建立了滚圈疲劳寿命预测模型。通过实例分析，得出了如下结论：通过调窑，将滚圈的最大支承载荷控制在2500kN以内，能显著提高滚圈的疲劳寿命；在传统设计中，将滚圈支承角定为30°不合理；存在一个最佳滚圈支承角，此时滚圈疲劳寿命最大。

The mathematical models of contact pressure distribution between rolling ring and shell under intermittent contact are set up, the formulae of bending moment and bending stress of tyre are obtained. By applying nominal stress method and local stress-strain method, the fatigue life prediction model of rolling ring is built. The results show that the fatigue life can be improved greatly if the rolling ring load can be controlled within 2 500 kN after kiln alignment. The support angle 30° of rolling ring is unreasonable. There exits an optimal angle which will enhance rolling ring life to the utmost.