基于修正剑桥模型的光滑粒子流体动力学的土柱崩塌模拟

发布时间：2018-06-30 18:43

本文选题：土柱崩塌 + 光滑粒子流体动力学(SPH)　；参考：《科学技术与工程》2017年31期

【摘要】：土柱崩塌是一种被广泛研究的岩土大变形模型。考虑非关联流动法则的修正剑桥(MCC)模型描述土体行为;并将其导入光滑粒子流体动力学(SPH)算法来模拟土柱崩塌。在算法设计中,利用有限元方法中常用的中心回映算法来计算应力积分,以提高算法的精度。应用所设计的SPH算法模拟初始高宽比分别为1.5、3和5.5的土柱崩塌模型;并与实验结果比较,表明SPH算法在研究土柱崩塌问题的可靠性。
[Abstract]:Soil column collapse is a widely studied model of large deformation of rock and soil. The modified Cambridge (MCC) model, which takes into account the non-associated flow rule, describes the behavior of soil and introduces it into the smooth particle hydrodynamics (SPH) algorithm to simulate the collapse of soil columns. In order to improve the accuracy of the algorithm, the center reflection algorithm, which is commonly used in finite element method, is used to calculate the stress integral in the design of the algorithm. The SPH algorithm is used to simulate the soil column collapse model with the initial aspect ratio of 1.5 and 5.5 respectively, and the comparison with the experimental results shows that the SPH algorithm is reliable in the study of soil column collapse.
【作者单位】：黄冈师范学院数理学院;河海大学力学与材料学院;云南民族大学数学与计算机科学学院;
【基金】：国家自然科学基金(61462096) 江苏省普通高校研究生科研创新计划项目(KYZZ16_0268) 黄冈师范学院培育基金(201617603)资助
【分类号】：P642.21

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