现代交通技术2025，Vol.22Issue(3)：1-6,6.
基于用户自定义离散元模型的沥青混合料虚拟车辙试验
Virtual Rutting Test of Asphalt Mixtures Using a User-defined Discrete Element Model
摘要
Abstract
The permanent deformation behaviors of asphalt mixtures are closely related to their microscopic characteristics.The microscopic components of asphalt mixtures were reconstructed using the discrete element software PFC3D based on a user-defined discrete element model for asphalt mixtures,and the virtual specimens of asphalt mixtures for rutting test were de-veloped.The micromechanical models were employed to represent the interactions within the microscale components of virtu-al specimens of asphalt mixtures.Then the virtual rutting test of asphalt mixtures was conducted,and its variability was also verified.It is found that the deformation law of asphalt mixtures can be simulated accurately during virtual rutting test,and the test results were very closed to the laboratory measurements.The variability of virtual rutting test is significantly lower than the specification requirements.The microscopic components of asphalt mixtures can be conveniently and accurately modeled using the user-defined discrete element model for asphalt mixtures proposed in this paper,which will provide a new means for further investigating the microscopic characteristics of the permanent deformation behaviors of asphalt mixtures.关键词
沥青混合料/永久变形/虚拟车辙试验/变异性/用户自定义离散元模型Key words
asphalt mixture/permanent deformation/virtual rutting test/variability/user-defined discrete element model分类
交通工程引用本文复制引用
张德育,韦有信,潘大荣..基于用户自定义离散元模型的沥青混合料虚拟车辙试验[J].现代交通技术,2025,22(3):1-6,6.基金项目
江苏省高等学校基础科学(自然科学)面上项目(21KJB580002) （自然科学）
江苏省博士后科研资助计划项目(2019K138) （2019K138）
江苏省基础研究计划(自然科学基金)项目(BK20140109) （自然科学基金）
南京工程学院校级科研基金项目(YKJ201512) （YKJ201512）
