论文部分内容阅读
黏土的宏观力学性质与其微观结构密切关联,而离散单元法是研究岩土材料力学行为宏微观联系的重要工具。但是目前绝大多数离散元程序主要针对无黏性颗粒土而开发,能用于黏土研究的离散元程序十分少见。介绍了自主开发的考虑黏土颗粒的薄板形状以及颗粒间复杂物理-化学作用力的黏土离散元模拟程序,以及程序中碰撞检测和颗粒间双电层斥力、范德华力以及Born斥力的计算模块。最后,给出了一个基于该程序的简单模拟实例,初步验证了其合理性。
The macroscopic mechanical properties of clay are closely related to its microstructure, while the discrete element method is an important tool to study the macroscopic and microscopic relations of mechanical behavior of geomaterials. However, at present, the vast majority of discrete element programs are mainly developed for non-sticky granular soils, and the discrete element programs that can be used for clay research are very rare. In this paper, we introduce a self-developed clay platelet shape simulation program and clay discrete element simulation program with complex physico-chemical forces between particles, as well as the calculation module of collision detection and interparticle double layer repulsion, van der Waals forces and Born repulsion in the program. Finally, a simple simulation example based on the program is given, and its rationality is verified.