Virtual Simulation of Ground Scene of the Mining Area

2011 ◽  
Vol 402 ◽  
pp. 702-705
Author(s):  
Yong Shun Han ◽  
Shao Kun Dong ◽  
Jun Han ◽  
Si Mei Zeng
Keyword(s):  
Three Dimensional ◽  
Mining Area ◽  
Virtual Simulation ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Simulation Results ◽  
Point Line

Mining has a nearly relation with the development of our country and people’s life, in order to improve the informationization of the mining, in this study, realize modeling the objects of the mining by dividing them into four parts, point, line, surface and body models, according to the characteristics of the ground environment and the types of the entities in the mining area. Then, study the methods and realize the modeling and visualization of the ground scene of the mining area by using the technology, ArcEngine, ADO and three-dimensional model. By verifying, this method has better simulation results.

Dynamic Simulation Analysis of the Crane Hoisting Process Based on Adams

2014 ◽  
Vol 940 ◽  
pp. 132-135 ◽  
Author(s):  
Yi Fan Zhao ◽  
Ling Sha ◽  
Yi Zhu
Keyword(s):  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Wire Rope ◽  
Dynamics Simulation ◽  
Dimensional Model ◽  
Analysis Model ◽  
Three Dimensional Model ◽  
Adams Software ◽  
Simulation Results

Established the dynamics simulation analysis model of crane hoisting mechanism based on the theory of dynamics in Adams software, and then through the three dimensional model of lifting mechanism dynamics entities, the constraints, load, drive can be added, the motion law can be defined to simulation analysis the change of the force of wire rope, the change of displacement, velocity and acceleration of lifting weight in the lifting process. On the basis of the simulation results, it can make a great improvement for the structure of crane and provide a meaningful theoretical reference for the hoisting machinery innovation design.

The Numerical Simulation Research of Gas Entrainment Based on Three-Dimensional Model

2017 ◽  
Author(s):  
Yilin Zhang ◽  
Shanfang Huang
Keyword(s):  
Experimental Data ◽  
Mass Flow Rate ◽  
Cross Section ◽  
Flow Rate ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Gas Entrainment ◽  
Simulation Results

Two kinds of three-dimensional model are built to simulate the gas entrainment process through a small break in the horizontal coolant pipe at the bottom of the stratified flow. The results were compared with the two-dimensional simulation results and the experimental data. In terms of the two-phase distribution, the simulation results agree well with the experimental data and show much superiority compared with the two-dimensional model. The results verify the reliability of model building, condition setting and calculating method qualitatively and quantitatively. In general, after gas entrainment, the average velocity over cross section increases obviously, but the mass flow rate decreases contrarily. This is because that void fraction meanwhile reduces the fluid density. In addition, it is found that the larger the void fraction of vapor is, the higher the average discharge velocity of the fracture cross-section fluid is. Besides, with the larger internal and external pressure difference, the gas volume fraction and the flow velocity in the break increase, resulting in the mass flow rate increasing along with them. However, since the critical height increases as well, the total loss amount of liquid in the stable effluent stage decreases, and the time before entrainment becomes shorter.

Research on V-Groove Angle of Rotated Dual-Plates Lapping Machine

2010 ◽  
Vol 37-38 ◽  
pp. 1125-1129 ◽  
Author(s):  
Ju Long Yuan ◽  
Wei Feng Yao ◽  
Qian Fa Deng ◽  
Bing Hai Lv
Keyword(s):  
Angular Velocity ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Factors Affecting ◽  
Simulation Results ◽  
Lapping Machine

The V-groove angle of the machine is considered as one of important factors affecting the processing and the ball’s precision. To study its effect, the three-dimensional model of RDP lapping machine is built and a series of simulations at different V-groove angles are carried out, using the software ADAMS based on the RDP principle. The influence of three parameters including spin angle, spin angular velocity and revolution angular velocity are discussed by observing and analyzing the simulation results. It is concluded that some optimized V-groove angles can improve the sphericity of ball; some ones can induce the balls to move back and roll during some periods of the processing.

Liquid Flow Characteristics in Microchannels

2011 ◽  
Vol 130-134 ◽  
pp. 1484-1490
Author(s):  
Yan Feng Liu ◽  
Hong Wei Li ◽  
Jing Wei Zhang ◽  
Jin Xue
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Fluid Flow ◽  
Three Dimensional ◽  
Flow Characteristics ◽  
Simulation Methods ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Simulation Results ◽  
Poiseuille Number

A three-dimensional model was developed to simulate the laminar flow and convective heat transfer in rectangular silicon microchannels，which have hydraulic diameter of 95.3，92.3 ,85.8 , 80 and 75μm respectively．The rationality of the simulation methods and results were validated by comparing with experimental data. The simulation results indicate that the aspect ratio has a significant impact on the Poiseuille number. Conventional fluid flow theory is fit for researching the fluid flow in microchannels, Po is a constant that is not dependent on the Reynolds number.

Numerical Simulation of Rheo-Diecasting Mould Filling Process of Semisolid Magnesium Alloys

2008 ◽  
Vol 575-578 ◽  
pp. 32-36 ◽  
Author(s):  
Hong Yan ◽  
Tao Wang ◽  
Ming Fu Fu
Keyword(s):  
Magnesium Alloys ◽  
New Technology ◽  
Die Casting ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Air Entrapment ◽  
Flow Temperature ◽  
Mould Filling ◽  
Simulation Results

Base on the coupled three-dimensional model of flow temperature and apparent viscosity on semisolid materials, the mould filling processes of liquid and semisolid magnesium alloys have been analyzed. The simulation results showed that the semisolid mould filling with the characteristic of pseudo-plasticity and Bingham type is steady and the air entrapment is much smaller than that of liquid die casting. Therefore, the semisolid die casting can prevent from those defects produced by the traditional die casting, which offer a new technology for lower interior defects and better quality.

Numerical Investigation on Thermo Mechanical Behavior in Wet Multidisc Friction Pairs System

2014 ◽  
Vol 697 ◽  
pp. 177-180
Author(s):  
Zheng Hu ◽  
Ming Han ◽  
Zhen Chuan Song ◽  
Ke Yan Ning
Keyword(s):  
Numerical Simulation ◽  
Three Dimensional ◽  
Thermomechanical Behavior ◽  
Temperature Fields ◽  
Stress Fields ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Friction Disc ◽  
Simulation Results ◽  
Braking Process

In order to research the thermomechanical behavior of multidisc friction pairs system, three dimensional model is established for numerical simulation under simulated braking process. Based on some accurate boundary conditions, the temperature fields and thermal stress fields of friction discs and separator discs are simulated using finite element method. The temperature fields and contact stress fields of friction disc and separator discs are obtained, and their regularities of distribution are studied spatially and historically. To verify the simulation results, an experimental investigation is carried out. The results offered references for analyzing failure forms and causes of the wet multidisc friction pairs system.

A Improved Design of Mechanical Structure of a Coin-Wrapping Machine Based on Pro/E Software

2013 ◽  
Vol 288 ◽  
pp. 48-53
Author(s):  
Xue Dong Jing ◽  
Ding Wei ◽  
Siwen Kang
Keyword(s):  
3D Modeling ◽  
Three Dimensional ◽  
Integrated Model ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Mechanical Structure ◽  
Modeling Software ◽  
New Type ◽  
Simulation Results ◽  
Improved Design

This paper has designed a new type of mechanical structure for a coin-wrapping machine; It’s three-dimensional model has been established by Pro / E 3D modeling software and the kinematic of the Integrated model analysis has been carried out. The simulation results have shown that the coin wrapping process can be simplified and the efficiency can also be improved with the new structure, thereby reducing the costs.

Untersuchungen zum thermischen Fließbohren*/Investigations on thermal flow drilling – Three-dimensional modelling and simulation with experimental validation

2018 ◽  
Vol 108 (10) ◽  
pp. 724-729
Author(s):  
E. Özkaya ◽  
S. Hannich ◽  
D. Biermann
Keyword(s):  
Experimental Validation ◽  
Three Dimensional ◽  
Modelling And Simulation ◽  
Thermal Flow ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Simulation Results ◽  
Temperature Force ◽  
Flow Drilling ◽  
Eine Verbesserte

In diesem Beitrag wird das Fließbohren von AlSi10Mg mit zwei unterschiedlichen Werkzeugtemperaturen untersucht. Für die Erzielung eines tieferen Prozessverständnisses wird ein dreidimensionales Modell aufgebaut und die Simulationsergebnisse mit den experimentellen Werten der Temperatur, Kraft sowie Drehmoment validiert. Im Vergleich zum nicht temperierten Werkzeug kann mit dem vorgeheizten Fließbohrer eine verbesserte Bohrungsqualität erreicht werden.   This paper investigates the flow drilling of AlSi10Mg with two different initial tool temperatures. To achieve a deeper understanding of the process, a three-dimensional model was developed and the simulation results were validated with experimentally determined values for temperature, force and torque. Compared to the non-heated tool, the pre-heated flow drill led to a better borehole quality.

Developing a Hybrid Three-Dimensional Model of a Plasma Cloud Undergoing Collisionless Expansion into a Rarefied Ionised Magnetized Medium

2021 ◽  
pp. 112-132
Author(s):  
A.S. Dikalyuk
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Numerical Scheme ◽  
Three Dimensional ◽  
System Of Equations ◽  
Plasma Cloud ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Induction Equation ◽  
Simulation Results

The paper presents the results of developing a hybrid three-dimensional model of collisionless interaction in plasma flows. This model considers ions in kinetical terms (simulated as a set of individual particles) and describes electrons in terms of continuum mechanics (simulated as a fluid). We present the system of equations behind the mathematical model and the physical conditions limiting its applicability. The system includes equations describing ion motion in electromagnetic fields, the quasineutrality equation, equations for calculating the total current density, non-radiative Maxwell's equations, and the generalised Ohm's law. We outline a numerical method for solving our hybrid model equations and describe an algorithm for solving the system of equations over time. We focus on the numerical method for solving the induction equation, which takes possible discontinuous solutions into account and preserves the divergence-free condition for the magnetic field. The paper discusses the issues of increasing the spatial approximation accuracy for the numerical scheme used to solve the induction equation. We present numerical simulation results for collisionless expansion of a plasma cloud into a rarefied ionised gas in the presence of an external magnetic field. These results were obtained using our computer code that implements the hybrid model described. The paper demonstrates some numerical properties of the digital simulation developed, specifically, how the order of accuracy for the numerical scheme approximation designed to solve the induction equation affects numerical simulation results

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