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基于扩展有限元方法的沥青混合料劈裂试验的数值模拟分析

Simulation of splitting test of Asphalt Mixtures based on Extend Finite Element Method
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摘要 为了更好的认识和分析沥青混合料的破坏机理,包括沥青路面结构行为、损伤规律、裂缝形成与扩展,本文引入了扩展有限元方法,以沥青混合的劈裂试验为依据,采用有限元软件和双线性内聚力对沥青混合料圆形试件(DCT)进行了开裂扩展模拟,并将数值结果和试验结果进行了对比。结果表明,扩展有限元方法的数值结果和试验结果吻合很好,比方法可以用于沥青路面结构的力学计算分析。 In order to recognize and analyze the damage process of asphalt mixture, including damage behav- ior, crack formation and development regularity, extended finite dement method (XFEM) was introduced. The fi- nite element software and bilinear cohesive force were adopted to simulate crack extension of asphalt mixture circu- lar specimen according to splitting test of asphalt mixture. The The results show that value of extended finite element is similar in mechanical analysis. numerical and experimental results were analyzed. experimental value, which simulate method can use in mechanical analysis.
作者 刘喆 Zhe Liu(Shanxi Railway Institute, Weinan 714000, China)
出处 《青海交通科技》 2017年第4期49-51,共3页 Qinghai Transportation Science and Technology
关键词 沥青混合料 劈裂 数值模拟 有限元 asphalt pavement asphalt mixture splitting test extended finite element method
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