防灾减灾工程学报2025，Vol.45Issue(5)：997-1004,8.DOI:10.13409/j.cnki.jdpme.20250326001
国产高性能离散元软件MatDEM的研发与应用
Development and Application of Domestic High-performance Discrete Element Software MatDEM
摘要
Abstract
The discrete element method(DEM)can effectively simulate the discontinuity and large-de-formation failure processes in geotechnical materials,holding broad application prospects in the engi-neering field.However,the DEM faces three major challenges in engineering applications:great diffi-culty in accurate modeling,incomplete multi-field coupling theory,and low computational efficiency.To address these issues,the domestically developed high-performance discrete element software,MatDEM,has achieved the following innovative breakthroughs.Based on cross-scale modeling meth-ods and DEM macro-micro conversion formulas for geotechnical materials,an au-tomatic training technology for discrete element materials is developed,significantly reducing the complexity of accu-rate modeling.A discrete element pore density flow method is proposed,enabling integrated numeri-cal simulations of multi-field,fluid-solid coupling,and solute transport.By adopting an original ma-trix-based discrete element algorithm,it efficiently handles large-scale numerical simula-tions involv-ing millions of particles.Currently,MatDEM integrates core functions such as pre-processing,solv-ing,post-processing,and extension modules,forming a complete software ecosystem.After more than a decade of continuous development and optimization,the software has been successfully applied in fields such as geological disasters,geotechnical engineering,mining engineering,and oil and gas extraction.In the future,by further enhancing the adaptability of the software to engineering scenari-os,MatDEM will provide strong technical support for disaster prevention,mitigation,and engineer-ing design in China.关键词
MatDEM/离散元法/数值模拟/多场耦合/工程应用Key words
MatDEM/discrete element method/numerical simulation/multi-field coupling/engineer-ing application分类
天文与地球科学引用本文复制引用
刘春,杨泽荣,刘辉..国产高性能离散元软件MatDEM的研发与应用[J].防灾减灾工程学报,2025,45(5):997-1004,8.基金项目
国家重点研发计划项目(2023YFC3707900)、国家自然科学基金项目(42222707,42477211)资助 （2023YFC3707900）
