Discrete element method (DEM) contact model building method for reflecting weakening of seepage on rock and soil mass strength
US11977825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2020 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Jun 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/25
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.