Numerical Simulation of Rigid Cylindric Plate's Sinkage on Soil Based on SPH/FEM Method

2014 ◽  
Vol 1049-1050 ◽  
pp. 483-486
Author(s):  
Ting Xia ◽  
Gang He ◽  
Peng Hu ◽  
Xiao Long Li
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Dynamic Simulation ◽  
Smoothed Particle Hydrodynamics ◽  
Mechanical Design ◽  
Material Model ◽  
Fem Method ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Simulation Results

Based on smoothed particle hydrodynamics (SPH) and FEM method, the dynamic simulation of rigid cylindric plate's sinking process on soil is studied with LS-DYNA software, and MAT 147 material model is used to describe soil's attributes. The stress distribution and flowing trend of the soil are compared at different period. The simulation results show that the SPH/FEM method is useful to analyze large deformation of soil, and our findings can give helps to the mechanical design of the components interacting with soil.

Numerical Simulation of Flow in Complex Geometries by Using Smoothed Particle Hydrodynamics

2020 ◽  
Vol 59 (40) ◽  
pp. 18236-18246
Author(s):  
Tianwen Dong ◽  
Yadong He ◽  
Jianchun Wu ◽  
Shiyu Jiang ◽  
Xingyuan Huang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Smoothed Particle Hydrodynamics ◽  
Complex Geometries ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

scholarly journals Application of Smoothed Particle Hydrodynamics (SPH) for the Simulation of Flow-like Landslides on 3D Terrains

2022 ◽  
Author(s):  
Binghui Cui ◽  
Liaojun Zhang
Keyword(s):  
Risk Assessment ◽  
Smoothed Particle Hydrodynamics ◽  
Disaster Mitigation ◽  
Sph Method ◽  
Landslide Event ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Simulation Results ◽  
Mitigation Design ◽  
The Impact

Abstract Flow-type landslide is one type of landslide that generally exhibits characteristics of high flow velocities, long jump distances, and poor predictability. Simulation of it facilitates propagation analysis and provides solutions for risk assessment and mitigation design. The smoothed particle hydrodynamics (SPH) method has been successfully applied to the simulation of two-dimensional (2D) and three-dimensional (3D) flow-like landslides. However, the influence of boundary resistance on the whole process of landslide failure is rarely discussed. In this study, a boundary algorithm considering the friction is proposed, and integrated into the boundary condition of the SPH method, and its accuracy is verified. Moreover, the Navier-Stokes equation combined with the non-Newtonian fluid rheology model was utilized to solve the dynamic behavior of the flow-like landslide. To verify its performance, the Shuicheng landslide event, which occurred in Guizhou, China, was taken as a case study. In the 2D simulation, a sensitivity analysis was conducted, and the results showed that the shearing strength parameters have more influence on the computation accuracy in comparison with the coefficient of viscosity. Afterwards, the dynamic characteristics of the landslide, such as the velocity and the impact area, were analyzed in the 3D simulation. The simulation results are in good agreement with the field investigations. The simulation results demonstrate that the SPH method performs well in reproducing the landslide process, and facilitates the analysis of landslide characteristics as well as the affected areas, which provides a scientific basis for conducting the risk assessment and disaster mitigation design.

Simulation Analysis on Strength of Bucket Tooth with Various Soil

2012 ◽  
Vol 619 ◽  
pp. 62-65 ◽  
Author(s):  
Ying Ying Zhang ◽  
Fan He ◽  
Cheng Long Li ◽  
Yang Gao ◽  
Peng Gao
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Large Scale ◽  
Maximum Stress ◽  
Simulation Analysis ◽  
Solid Model ◽  
Finite Element Software ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Smoothed Particle Hydrodynamics Method ◽  
Simulation Results

This paper applies large-scale finite element software ANSYS and the module of LS-DYNA to establish the solid model of bucket teeth, and according to Smoothed Particle Hydrodynamics Method (SPH) establishes the soil constitutive model. Emulating the process that bucket teeth excavate soil of three different grade ruggedness coefficients obtains the stress and statistical value of bucket tooth point; Simulation results show that: the stress concentration of bucket teeth point is more serious. When the ruggedness coefficient is0.6< f <1.0, the corresponding maximum stress is 197 ~ 309MPa, which meets the strength requirement .The damage is caused by the fatigue failure.

Numerical Simulations of the Spall Damage of the Target Material Induced by Laser Driven Flyer Impacting

2010 ◽  
Vol 156-157 ◽  
pp. 1305-1312
Author(s):  
He Jun Wang ◽  
Hui Xia Liu ◽  
Zong Bao Shen ◽  
Wei Li ◽  
Yuan Yuan Zheng ◽  
...  
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Target Material ◽  
Surface Velocity ◽  
Free Surface Velocity ◽  
Damage Distribution ◽  
Spall Damage ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Simulation Results ◽  
Constant Interest

The spall phenomenon has been a subject of constant interest for many years, and it is still widely investigated in various ways including the experiment. This paper uses the method of smoothed particle hydrodynamics and the model of Johnson-Cook tensile cumulative damage to simulate the process of spall induced by the laser-driven flyer loading. Using this method, some numerical simulation results can be obtained, like the different time of the 2D image of damage distribution and the rear free surface velocity histories of target material. These results could offer some useful messages for the study on spall damage.

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