【摘要】 对液体橡胶基混凝土(LRBC)材料进行了压缩疲劳和冲击循环交叠加载,测量了弹性模量随着加载试验的变化情况。考虑到累积耗散能对于疲劳损伤可以看成是一个独立的因素,采用耗散能的累积定义损伤,对加载过程中的冲击损伤和疲劳损伤进行了耦合分析。结果表明:冲击损伤和疲劳损伤是相互耦合的;冲击损伤对疲劳损伤的扩展产生了明显影响。更多还原

【Abstract】 The change of elastic modulus of liquid rubber based concrete(LRBC) with the loading was measured by the alternate compressive fatigue and impact loading test.Considered that the cumulative dissipated energy can be regarded as an independent factor to the fatigue damage and used to define the damage,the coupling effects of impact damage and fatigue damage in the loading process were analyzed.The analyzed results show that the impact damage and fatigue damage are coupled each other;and the impact damage affects the evolution of fatigue damage evidently.更多还原