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基于断裂力学方法的冷再生基层材料疲劳寿命研究

Research on Fatigue Life of Cold Recycling Base Material Based on Fracture Mechanics Method
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摘要 利用断裂力学方法对冷再生基层材料的疲劳裂纹扩展进行分析,选择合适的断裂力学公式及参数,进而推导出疲劳寿命预估方程,分析方程中参数的取值并给出算例通过算例得到的结果对影响疲劳寿命的因素进行分析,并与通过试验得到的数据进行对比结果表明,用断裂力学方法预测含裂缝冷再生基层材料的疲劳寿命更合理。 The method of fracture mechanics was used to analyse the propagation of fatigue cracks of cold recycling base material.The suitable fracture mechanics formula and parameters were chosen and then the fatigue life forecast equation was deduced.The parameters determination method was analysed and the example was giren.The conclusion was gained through comparing with the database obtained from the tests.The results show that it is more reasonable to forecast the fatigue life of materials of cracked cold recycling base based on the method of fracture mechanics.
出处 《筑路机械与施工机械化》 2012年第4期60-63,共4页 Road Machinery & Construction Mechanization
基金 交通部西部交通建设科技项目(2009318812069)
关键词 断裂力学 疲劳寿命 参数 寿命预估方程 fracture mechanics; fatigue life; parameter; life forecast equation
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