摘要
在对沥青路面心样进行轴向压缩疲劳试验时,结合CT扫描技术拍摄了不同疲劳阶段下沥青混凝土的细观结构图像,利用细观力学及断裂力学方法建立了一细观模型,运用有限元程序对试件的宏观裂纹形成这一复杂过程进行了模拟。结果表明,该模型能有效模拟材料的损伤演化过程,在有限的实验研究基础上,运用细观力学方法数值模拟沥青混凝土的力学性能是可行的,以弥补试验的不足。
The model of micro-mechanics damage of asphalt concrete is presented based on micro-structure images by using CT（Computerized Tomograph） scanning in fatigue experiment of asphalt concrete. The evolution of the damage in asphalt concrete is caclulated with FEM（Finite Element Method）. The results of numerical simulation showed that the model is valid and the method is workable. An economical and fast way is provided by numerical simulation for research of asphalt concrete mechanics performance.
出处
《交通科技》
2006年第1期56-58,共3页
Transportation Science & Technology
基金
国家自然科学基金项目资助(批准号10372075)
关键词
沥青混凝土
细观损伤
数值模拟
asphalt concrete
micro-mechanics damage
numerical simulation
