基于数字图像的非均质岩土材料细观结构PFC^(2D)模型

PFC^(2D) model for mesostructure of inhomogeneous geomaterial based on digital image processing

提出了一种基于数字图像处理的非均质岩土材料细观结构PFC2D数值计算模型自动生成方法,并采用VC++.NET编写了相应的接口程序.从而实现了非均质材料细观结构PFC2D软件建模的快速、真实及自动化等优点.通过对土石混合体这一典型非均质岩土材料的建模及分析实例,建立了土石混合体真实的细观结构PFC2D数值计算模型.分析计算表明,基于数字图像处理的PFC2D模型生成技术不但提高了建模和数值模拟分析的精度,而且对于进一步研究土石混合体等非均质材料的细观力学特征具有重要的意义.

A method was proposed to build PFC^2D numerical model for mesostructure of inhomogeneous geomaterial by digital image processing, and a interface program was compiled with VC ＋ ＋. NET language. So the model generation of the really microstructure model of the inhomogeneous geomaterials became quickly, really and automatically. Through an example of the model building and numerical analysis of soil/rock mixture using this method, the numerical model of PFC^2D for actual mesostructure of soil/rock mixtures was built. The simulation results indicate that digital image processing based model building of PFC^2D not only improve the precision of the modeling and numerical simulation, but also has great significations on the deep study on the mesomechanics of soil/rock mixtures and other inhomogeneous materials.