Numerical analysis of column collapse by smoothed particle hydrodynamics with an advanced critical state-based model 基于高级临界状态模型对土柱坍塌进行光滑粒子流体动力学模拟

Jin，Zhuang1,2; Lu，Zhao3,4; Yang，Yi5

2021-11-01

10.1631/jzus.A2000598

Journal of Zhejiang University-SCIENCE A   影响因子和分区

1673-565X

1862-1775

The complex behavior of granular material considering large deformation and post-failure is of great interest in the geotechnical field. Numerical prediction of these phenomena could provide useful insights for engineering design and practice. In this paper, we propose a novel numerical approach to study soil collapse involving large deformation. The approach combines a recently developed critical state-based sand model SIMSAND for describing complex sand mechanical behaviors, and the smoothed particle hydrodynamics (SPH) method for dealing with large deformation. To show the high efficiency and accuracy of the proposed approach, a series of column collapses using discrete element method (DEM) and considering the influence of particle shapes (i.e. spherical shape (SS), tetrahedral shape (TS), and elongated shape (ES)) were adopted as benchmarks and simulated by the proposed method. The parameters of SIMSAND were calibrated from the results of DEM triaxial tests on the same samples. Compared with the results of DEM simulations and reference solutions derived by published collapse experiments, the runout distance and final height of specimens with different particle shapes simulated by SPH-SIMSAND were well characterized and incurred a lower computational cost. Comparisons showed that the novel SPH-SIMSAND approach is highly efficient and accurate for simulating collapse, and can be a useful numerical analytical tool for real scale engineering problems.

Collapse Critical state Granular material Large deformations Smoothed particle hydrodynamics (SPH) TU434

EI

中文

第一

20214711218851

Critical current density (superconductivity) ; Deformation ; Finite difference method ; Granular materials

Electricity: Basic Concepts and Phenomena:701.1 ; Numerical Methods:921.6 ; Materials Science:951

2-s2.0-85119531473

Scopus

1.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou),Guangzhou,511458,China
3.Civil and Environmental Engineering,University of Macau,Taipa,Macao
4.Research and Development Center,Shenzhen Foundation Engineering Co. LTD,Shenzhen,518000,China
5.Department of Civil Engineering,Chu Hai College of Higher Education,Tuen Mun,Hong Kong

Jin，Zhuang,Lu，Zhao,Yang，Yi. Numerical analysis of column collapse by smoothed particle hydrodynamics with an advanced critical state-based model 基于高级临界状态模型对土柱坍塌进行光滑粒子流体动力学模拟[J]. Journal of Zhejiang University-SCIENCE A,2021,22(11):882-893.

Jin，Zhuang,Lu，Zhao,&Yang，Yi.(2021).Numerical analysis of column collapse by smoothed particle hydrodynamics with an advanced critical state-based model 基于高级临界状态模型对土柱坍塌进行光滑粒子流体动力学模拟.Journal of Zhejiang University-SCIENCE A,22(11),882-893.

Jin，Zhuang,et al."Numerical analysis of column collapse by smoothed particle hydrodynamics with an advanced critical state-based model 基于高级临界状态模型对土柱坍塌进行光滑粒子流体动力学模拟".Journal of Zhejiang University-SCIENCE A 22.11(2021):882-893.