颗粒材料崩塌模拟与特征研究

Simulation on Granular Material Collapse and Research on Its Characteristics

颗粒材料所表现出的行为特征是许多工艺技术及自然现象研究的理论基础.为对颗粒材料的崩塌特征进行深入研究,应用离散单元数值方法对颗粒材料崩塌进行了数值模拟,计算通过了试验数据的数值验证,说明计算结果是正确而有效的.在数值计算模拟的基础上,对两类典型颗粒崩塌过程及特征进行了研究与分析,最后利用数值计算结果得到不同崩塌条件下静止核心区的规律曲线并进行了分析.

The behavioral characteristics of granular materials are the theoretical basis for many technologies and natural phenomena research. In order to study the characteristics of the collapse of granular material, the numerical simulation was realized by using the discrete element numerical method, and the results of which were verified through experimental data showing the correctness and effectiveness of the simulation. Based on the numerical simulation,the processes and characteristics of two typical granular collapses were studied and analyzed. At last,the regular curves of the static core area under different collapse conditions were obtained and analyzed.