Reserch of Horizontal Dynamic Stress Distribution on Dynamic Consolidation of Discarded Iron Slag

2011 ◽  
Vol 250-253 ◽  
pp. 2959-2964
Author(s):  
Xiu Guang Song ◽  
Zhi Gang Dou ◽  
Kai Yao ◽  
Yang Yang
Keyword(s):  
Numerical Simulation ◽  
Dynamic Stress ◽  
Simulation Analysis ◽  
Dynamic Compaction ◽  
Experimental Program ◽  
Practical Application ◽  
Iron Slag ◽  
Dynamic Consolidation ◽  
Finite Element Numerical Simulation ◽  
Dynamic Stress Distribution

Dynamic consolidation has been widely used in many engineering fields. But in the use of discarded iron slag filled embankment, because the discarded iron slag is naturally piled up, multi-size particle mixture and backfilling height is relatively high, the effect of simple dynamic compaction is not obvious. This paper, combined with engineering examples, through the dynamic consolidation test, describes the experimental program, arrangement and spacing of tamping point, and matters need to be taken care in construction. It also explains the horizontal effects in consolidation by detection data analysis of waste iron slag roadbed. In this paper, we have established finite element numerical simulation analysis of dynamic consolidation by using FLAC3D. It is available in roadbed practical application and can be reference in similar projects of dynamic consolidation.

Monitoring Measurement of Vehicular Tunnels and Finite Element Numerical Simulation Analysis

2012 ◽  
Vol 204-208 ◽  
pp. 2832-2836
Author(s):  
Lei Chen ◽  
Lei Wang ◽  
Lin Zhang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Comparative Analysis ◽  
Linear Regression ◽  
Simulation Analysis ◽  
Field Monitoring ◽  
Monitoring Data ◽  
Finite Element Numerical Simulation ◽  
Simulation Results

The vault settlement, the horizontal convergence of Fangdoushan tunnel are monitored and measured. The changing curves with time are drawn; while the data of convergence measurement is analyzed with linear regression. The whole constructing process is simulated to analyze based on FLAC3D. The results of comparative analysis of the data from field monitoring and the data from numerical simulation shows that the simulation results accord well with the actual monitoring data, which will furthermore optimize both the design and the scientific construction

Finite Element Numerical Simulation Analysis on Deformation of Adjacent Building with Shallow Foundation due to Excavation

2013 ◽  
Vol 353-356 ◽  
pp. 403-406
Author(s):  
Yong Kang Yang ◽  
Xiao Yuan Li ◽  
Wu Yang ◽  
Chun Yan Feng
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Horizontal Displacement ◽  
Element Model ◽  
Vertical Displacement ◽  
Shallow Foundation ◽  
Foundation Pit ◽  
Adjacent Building ◽  
Finite Element Numerical Simulation

Based on deformation of adjacent building with shallow foundation of foundation pit excavation, Midas GTS is adopted to establish the finite element model. Through the numerical simulation, the maximum horizontal and vertical displacement in different conditions, Influence of different SMW pile stiffness and influence of different anchor position are analyzed. The results show that (1) horizontal deformation of SMW pile is decreased at the anchor construction; (2) compared with maximum horizontal displacement of SMW pile with 25a25b28a, the maximum horizontal displacement of SMW pile with 28b is increased by 50.9, 43.3, 11.5% respectively; (3) compared with the second anchor at 1.5, 3.5m, the horizontal displacement of adjacent building is minimal by the second anchor at 2.5m.

Study on Deformation of Thin-Walled Workpieces Milling Machining Based on Finite Element Method

2014 ◽  
Vol 644-650 ◽  
pp. 4971-4975
Author(s):  
Ji Qun Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Thin Plate ◽  
Simulation Analysis ◽  
Geometric Model ◽  
Mode Selection ◽  
Machining Process ◽  
Machining Accuracy ◽  
Finite Element Numerical Simulation ◽  
Thin Walled

In the mechanical products, there are always some poor stiffness and high precision thin-walled workpieces which will produce deformation in the machining process easily, so it is difficult to control the machining accuracy and to meet the requirement of higher machining accuracy. Based the finite element numerical simulation key technology, this paper analyzes the machining deformation, including geometric model simplification, mode selection, dynamic loading, a 3D simulation model of thin plate features establishment. Through the finite element numerical simulation analysis of the thin plate, we analyze the influence on processing deformation from different processing parameters and different constraints.

Mechanical Behavior of Broken Stone Fills under Dynamic Consolidation

2012 ◽  
Vol 446-449 ◽  
pp. 1696-1702
Author(s):  
Zheng Guo Gao ◽  
Yu Long Du ◽  
Xiao Bo Huang ◽  
Xin Huang
Keyword(s):  
Numerical Simulation ◽  
Significant Relationship ◽  
Dynamic Compaction ◽  
Reinforcement Effect ◽  
In Situ Test ◽  
Response Characteristics ◽  
Dynamic Consolidation ◽  
Dynamic Response Characteristics ◽  
Better Than

This paper studies the dynamic response characteristics of broken stone fills. Numerical simulation and in-situ test of the acceleration and settlement of a high fill under dynamic consolidation are carried out. The result shows that increasing compact energy and the compact numbers can improve the reinforcement effect. There is no significant relationship between the dynamic compaction number reaching the stable settlement and compact energy. When the compact energy is the same, compaction with a heavier hammer is better than compaction with a lighter hammer.

Field Test Study on Dynamic Stress Characteristics of Sand Soil

2011 ◽  
Vol 243-249 ◽  
pp. 3285-3288
Author(s):  
Xiu Guang Song ◽  
Kai Yao ◽  
Zhi Gang Dou ◽  
Yang Yang
Keyword(s):  
Field Test ◽  
Dynamic Stress ◽  
Large Field ◽  
Sand Soil ◽  
The Third ◽  
Iron Slag ◽  
Test Study ◽  
Stress Diffusion ◽  
Dynamic Consolidation ◽  
Soil Dynamic

In order to understand the dynamic stress diffusion rule of the waste iron slag (sand soil) during dynamic consolidation, we conducted a large field test. The propagation and attenuation of dynamic stress in each ramming strike was recorded through the resistance strain gauge. It was shown that the dynamic stress caused by dynamic consolidation is pretty obvious. The dynamic stress dissipates extremely fast during the dynamic consolidation, the time is only 0.5s after plus the aftermath. The soil dynamic stress has heart-shaped distribution during the compaction. The dynamic stress value increases with the tamping hit number, but it keeps stable after about the third hits.

Numerical Simulation on the Flow Field in Melt Pump

2012 ◽  
Vol 220-223 ◽  
pp. 1719-1722
Author(s):  
Jin Song Wen ◽  
Xi Ling Zhou
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Flow Field ◽  
Pressure Field ◽  
Simulation Analysis ◽  
Distribution Characteristics ◽  
Inflow Rate ◽  
Molding Process ◽  
3D Finite Element ◽  
Finite Element Numerical Simulation

In this paper, 3D finite element numerical simulation was used on the flow in the XXXX melt pump with POLYFLOW. By numerical simulation analysis on the flow field in the melt pump, distribution characteristics of pressure, flow velocity vectors and shear rate in the melt pump were obtained. Finally, the effects of inflow rate on the pressure difference between the exit and the entrance of the melt pump were investigated by analyzing the pressure field of the melt pump, which could be used to guide the design of melt pump and the plastics molding process.

Numerical Simulation of Cathodic Protection Potential Distribution of Coastal Power Plant Condenser Based on Physical Scale Model

2014 ◽  
Vol 644-650 ◽  
pp. 3734-3738
Author(s):  
Peng Zhang ◽  
Juan Zhao ◽  
Gui Wang
Keyword(s):  
Numerical Simulation ◽  
Power Plant ◽  
Cathodic Protection ◽  
Potential Distribution ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Scale Model ◽  
Physical Scale ◽  
Finite Element Numerical Simulation ◽  
Protection Potential

Finite element numerical simulation software was used for numerical simulation analysis of cathodic protection of coastal power plant condenser based on physical scale model. The effects of location, size and number of auxiliary anode on the cathodic protection potential distribution of the condenser were studied, which would predict cathodic protection result of the condenser and provide reasonable design for cathodic protection of the condenser.

Numerical Simulation in the Effect of Ignition Mode and Position on Fragment Velocity of Azimuthal Warhead

2014 ◽  
Vol 494-495 ◽  
pp. 502-505
Author(s):  
Xu Qiang Zhu ◽  
Cheng Jun Song ◽  
Yi Cheng
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Radial Direction ◽  
Simulation Analysis ◽  
Velocity Curve ◽  
Cost Ratio ◽  
Practical Application ◽  
Main Charge ◽  
Increasing Trend

To study the effect of ignition mode and position on fragment velocity of azimuthal warhead, a simulation model was established and computed. Simulation analysis results of azimuthal warhead showed that two ignition points mode was more valuable than the three ignition points mode, the fragment velocity curve had increasing trend in 0°~180° radial direction, ignition positions near to the edge of main charge end had the highest performance-cost ratio in the practical application.

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