模拟细观非均质材料破坏演化的物理元胞自动机理论

根据非均质材料的细观特征,从基本的能量传递定律出发,建立了一种新的描述细观非均质材料破坏演化的物理元胞自动机(PCA)理论.该理论能够对岩石、混凝土等非均质材料破坏演化进行有效模拟,突破了传统元胞自动机仅限于数学规则运算的框架,使之成为一种有效的物理力学方法.与岩石力学实验结果对比分析表明,PCA模拟结果与实验结果基本符合 关键词： 元胞自动机 细观非均质材料

PHYSICAL CELLULAR AUTOMATON THEORY FOR SIMULATING THE FAILURE PROCESS OF MICRO-HETEROGENEOUS MATERIAL

Based on the physical and mechanical characters of micro-heterogeneous material such as rock and concrete,a new theory of physical cellular automaton (PCA) for simulating the failure evolving process of micro-heterogeneous materials is set up,according to the basic law of the transfer of energy.PCA breaks through the traditional cellular automaton method which is only a mathematical operation.It is shown by some laboratory tests that the simulating results by PCA can agree with the laboratory results perfectly,thus,PCA is an effective physical and mechanical method.