公开(公告)号：US20210090326A1

公开(公告)日：2021-03-25

申请号：US16862878

申请日：2020-04-30

Applicant: CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Huanan YU ,  Shunjun LI ,  Guoping QIAN ,  Xiangbing GONG ,  Xuan ZHU

IPC: G06T17/00

Abstract: A modeling method for an asphalt mixture by coupling a discrete element method (DEM) and a finite difference method (FDM). Aggregates of an asphalt mixture are processed by a DEM, and a finite difference method is used to implement continuous medium simulation of an asphalt binder in the asphalt mixture. The influence of the coupling of the DEM and the finite difference method on mechanical properties of the asphalt mixture such as the strength and modulus are considered, to implement simulation of the deformation, shrinkage, cracking, etc. of a multiphase material in the asphalt mixture under different load. The method can accurately restore a void structure and true shapes and sizes of the aggregates and a binder in the asphalt mixture, and can characterize distribution characteristics thereof.