南京大学地球科学与工程学院,江苏 南京 210023
刘春(1984—),男,教授,博导,博士。主要从事计算工程地质方面的研究。E-mail:chunliu@nju.edu.cn
收稿:2025-03-26,
修回:2025-04-07,
纸质出版:2025-10-28
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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(05):997-1004.
LIU Chun,YANG Zerong,LIU Hui.Development and Application of Domestic High‑performance Discrete Element Software MatDEM[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(05):997-1004.
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(05):997-1004. DOI: 10.13409/j.cnki.jdpme.20250326001.
LIU Chun,YANG Zerong,LIU Hui.Development and Application of Domestic High‑performance Discrete Element Software MatDEM[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(05):997-1004. DOI: 10.13409/j.cnki.jdpme.20250326001.
离散元法(DEM)能够有效模拟岩土体的非连续性与大变形破坏过程,在工程领域具有广泛的应用前景。然而,离散元法在工程应用中面临三大核心挑战:精确建模难度大、多场耦合理论不完善以及计算效率低下。针对这些问题,国产高性能离散元软件MatDEM实现了以下创新突破:基于岩土体跨尺度建模方法与离散元宏微观转换公式,开发了离散元材料自动训练技术,显著降低了精确建模的复杂度;提出了离散元孔隙密度流法,实现了多场、流固耦合与溶质运移一体化数值模拟;采用原创的矩阵离散元计算法,高效处理数百万颗粒的大规模数值模拟。目前,MatDEM已集成前处理、求解、后处理及扩展模块等核心功能,形成了完善的软件生态系统。经过十余年的持续研发与优化,软件已成功应用于地质灾害、岩土工程、矿业工程及油气开采等领域。未来,将通过持续深化软件的工程场景适配能力,为我国防灾减灾与工程设计提供强有力的技术支撑。
The discrete element method (DEM) can effectively simulate the discontinuity and large-deformation failure processes in geotechnical materials
holding broad application prospects in the engineering field. However
the DEM faces three major challenges in engineering applications: great difficulty 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 methods 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 accurate modeling. A discrete element pore density flow method is proposed
enabling integrated numerical simulations of multi-field
fluid-solid coupling
and solute transport. By adopting an original matrix-based discrete element algorithm
it efficiently handles large-scale numerical simula-tions involving millions of particles. Currently
MatDEM integrates core functions such as pre-processing
solving
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 scenarios
MatDEM will provide strong technical support for disaster prevention
mitigation
and engineering design in China.
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