基于颜色函数的柔性膜边界方法在颗粒材料三轴试验DEM模拟中的应用

IF 6.2 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Geotechnics Pub Date : 2025-09-23 DOI:10.1016/j.compgeo.2025.107657

Hongze Li , Chun Feng , J.L. Feng

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引用次数: 0

摘要

本技术笔记提出了一种新的柔性膜算法，用于基于dem的三轴试验模拟。该算法利用颜色函数计算膜粒子的法向量，可以模拟柔性膜在大变形和曲率下的力学响应。利用虚粒子提高了高曲率区域法向量的计算精度。经过实验室试验结果验证，该算法有效再现了试件在三轴压缩下的应力应变行为，为研究颗粒状材料的力学响应提供了更加精确、可靠的工具。

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A novel flexible membrane boundary method based on color function in DEM simulations for triaxial tests of granular materials

This technical note presents a novel flexible membrane algorithm for DEM-based triaxial test simulations. Using color functions to calculate the normal vectors of membrane particles, the algorithm can model mechanical response of flexible membrane under large deformations and curvatures. It also uses imaginary particles to improve calculation accuracy of normal vector nearby high curvature area. After validation based on lab test result, the algorithm effectively reproduces the stress–strain behavior of specimens under triaxial compression, offering a more precise and reliable tool for studying the mechanical response of granular materials.

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来源期刊

Computers and Geotechnics 地学-地球科学综合

CiteScore

9.10

自引率

15.10%

发文量

438

审稿时长

45 days

期刊介绍： The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.