公开(公告)号：US20220318462A1

公开(公告)日：2022-10-06

申请号：US17299100

申请日：2020-10-23

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Zongqing ZHOU ,  Liping LI ,  Weimin YANG ,  Chunjin LIN ,  Shaoshuai SHI ,  Chenglu GAO ,  Chengshun SHANG ,  Yang GENG ,  Songsong BAI

IPC: G06F30/25

Abstract: A discrete element method contact model building method includes: selecting a filling body in a disaster-causing structure to obtain a change rule of cumulative loss of the filling body ; performing test simulation, and determining a relation function of each group of corresponding mesoscopic mechanical parameters in each time period and mesoscopic parameters of a DEM contact model representing a change rule of macroscopical parameters of the filling body; embedding each mesoscopic parameter relation function into an existing particle contact model, performing test simulation, and updating a fracture failure criterion of the contact model according to a corresponding relation of macro-mesoscopic strength during model failure; and based on a seepage failure indoor test, building a seepage failure discrete element calculation model, and simulating the seepage failure process of a rock and soil mass by using the obtained particle contact model and the fracture criterion of the particle contact model.