摘要
颗粒流程序可将细观物理力学性质参数与宏观力学参数联系起来模拟连续介质的基本力学特性,粘结单元模型可实现细观层面上对岩土体的损伤、破裂等过程以及破坏机制进行研究。针对目前的商用颗粒流软件中存在颗粒单元单一,粘结模型参数较多且无物理意义等不足,介绍了一种使用Fortran语言开发的颗粒流软件的开发。该程序包括棒状、圆盘状、任意多边形等基本形状的颗粒单元,通过初始孔隙率调整单元间的叠合量来控制粘结力的大小,避免计算时需要输入实验无法测定的粘结模型参数;同时,对于岩石材料的宏细观参数开展初步的研究,探讨不同宏细观参数之间的定性关系,为后续的相关研究工作奠定重要的基础。
Particle flow code mesoscopic physics mechanics parameters can be linked with macroscopic mechanical parameters of the simulation the basic mechanical characteristics of continuum, bonding element model which can realize the damage and fracture process of rock mass and failure mechanism at the mesoscopic level were studied. In view of the single particles in present commercial particle flow software unit, a lot of binding model parameters of the deficiencies is without physical meaning. In this paper, a particle flow using Fortran language development software development. The program includes basic shapes such as stick, disc, arbitrary polygon particles units, composite volume between the control unit is used to control the size of the cohesive force, greatly reduce the bonding parameters in the model; At the same time, the preliminary research of the macro mesoscopic parameters of rock material was conducted, the qualitative relationship between different macro mesoscopic parameters are discussed. The research of this paper has laid an important foundation for the follow -up research work.
作者
彭宁波
孙博
PENG Ning-bo;SUN Bo(Faculty of Architecture and Civil Engineering,Huaiyin Institute of Technology,Huaian Jiangsu 223001,China;Northwest Research Institute Co.Ltd.of China Railway Engineering Corporation,Lanzhou 730000,China)
出处
《淮阴工学院学报》
CAS
2017年第3期41-47,共7页
Journal of Huaiyin Institute of Technology
基金
江苏省自然科学基金项目(BK20160426)
淮安市科技项目(HAG201606)
关键词
颗粒流
岩石
单元形状
粘结模型
双轴实验
particle flow code
rock
element shape
bonded modelling
biaxial test
