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.

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.

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.

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.

scholarly journals A model of actin-driven endocytosis explains differences of endocytic motility in budding and fission yeast

2021 ◽  
Author(s):  
Masoud M. Nickaeen ◽  
Julien Berro ◽  
Thomas D. Pollard ◽  
Boris M. Slepchenko
Keyword(s):  
Comparative Study ◽  
Fission Yeast ◽  
Yeast Species ◽  
Budding Yeast ◽  
Turgor Pressure ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Factors Affecting

A comparative study (Sun et al., eLife, 2019) showed that the abundance of proteins at sites of endocytosis in fission and budding yeast is more similar in the two species than previously thought, yet membrane invaginations in fission yeast elongate two-fold faster and are nearly twice as long as in budding yeast. Here we use a three-dimensional model of a motile endocytic invagination (Nickaeen et al., MBoC, 2019) to investigate factors affecting elongation of the invaginations. We found that differences in turgor pressure in the two yeast species can largely explain the paradoxical differences observed experimentally in endocytic motility.

Kinematics Analysis of on-Off Pressure Mechanism with Flexible Link for Offset Press

2011 ◽  
Vol 120 ◽  
pp. 321-324
Author(s):  
Jun Zhong Guo ◽  
Tian Tian Cai ◽  
Jun Ping Yang
Keyword(s):  
Optimal Design ◽  
Angular Velocity ◽  
Three Dimensional ◽  
Coupled System ◽  
Kinematics Analysis ◽  
Flexible Link ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Motion State

In order to analyze the influence on the motion state of on-off pressure mechanism with flexible link of offset press, pneumatic on-off pressure was as the research object, the three-dimensional model of on-off pressure mechanism was established by using ADAMS, the kinematics simulations of the on-off pressure process was carried out, the curve of the angular velocity, angle acceleration and displacement between rollers of eccentric bushing in both rigid and the rigid-flexible coupled system was got, the significant basis of optimal design for on-off pressure mechanism was provided.

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.

scholarly journals A model of actin-driven endocytosis explains differences of endocytic motility in budding and fission yeast

2021 ◽  
Author(s):  
Masoud Nickaeen ◽  
Julien Berro ◽  
Thomas D. Pollard ◽  
Boris M. Slepchenko
Keyword(s):  
Comparative Study ◽  
Fission Yeast ◽  
Yeast Species ◽  
Budding Yeast ◽  
Turgor Pressure ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Factors Affecting

A comparative study (Sun et al., eLife, 2019) showed that the abundance of proteins at sites of endocytosis in fission and budding yeast is more similar in the two species than previously thought, yet membrane invaginations in fission yeast elongate two-fold faster and are nearly twice as long as in budding yeast. Here we use a three-dimensional model of a motile endocytic invagination (Nickaeen et al., MBoC, 2019) to investigate factors affecting elongation of the invaginations. We found that differences in turgor pressure in the two yeast species can largely explain the paradoxical differences observed experimentally in endocytic motility.

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