公开(公告)号：US11977825B2

公开(公告)日：2024-05-07

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

CPC classification number: 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.