Research on the Reliability of Box for Gear Test Bed

2011 ◽  
Vol 121-126 ◽  
pp. 1744-1748
Author(s):  
Xiang Yang Jin ◽  
Tie Feng Zhang ◽  
Li Li Zhao ◽  
He Teng Wang ◽  
Xiang Yi Guan
Keyword(s):  
Power Flow ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Design Parameters ◽  
The Finite Element Method ◽  
Test Bed ◽  
Kinematics Simulation ◽  
Beveloid Gears ◽  
Overall Performance

To determine the efficiency, load-bearing capacity and fatigue life of beveloid gears with intersecting axes, we design a mechanical gear test bed with closed power flow. To test the quality of its structure and predict its overall performance, we establish a three-dimensional solid model for various components based on the design parameters and adopt the technology of virtual prototyping simulation to conduct kinematics simulation on it. Then observe and verify the interactive kinematic situation of each component. Moreover, the finite element method is also utilized to carry out structural mechanics and dynamics analysis on some key components. The results indicate that the test bed can achieve the desired functionality, and the static and dynamic performance of some key components can also satisfy us.

Towards Predicting Relative Belt Edge Endurance With the Finite Element Method

1990 ◽  
Vol 18 (4) ◽  
pp. 216-235 ◽  
Author(s):  
J. De Eskinazi ◽  
K. Ishihara ◽  
H. Volk ◽  
T. C. Warholic
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Shear Deformations ◽  
Element Analysis ◽  
Vertical Loading ◽  
Predicted Values ◽  
Element Method

Abstract The paper describes the intention of the authors to determine whether it is possible to predict relative belt edge endurance for radial passenger car tires using the finite element method. Three groups of tires with different belt edge configurations were tested on a fleet test in an attempt to validate predictions from the finite element results. A two-dimensional, axisymmetric finite element analysis was first used to determine if the results from such an analysis, with emphasis on the shear deformations between the belts, could be used to predict a relative ranking for belt edge endurance. It is shown that such an analysis can lead to erroneous conclusions. A three-dimensional analysis in which tires are modeled under free rotation and static vertical loading was performed next. This approach resulted in an improvement in the quality of the correlations. The differences in the predicted values of various stress analysis parameters for the three belt edge configurations are studied and their implication on predicting belt edge endurance is discussed.

The Research on Seismic Performance of Tower under Icing Condition

2014 ◽  
Vol 986-987 ◽  
pp. 677-680
Author(s):  
Yu Chen Tian ◽  
Wei Jian Xue ◽  
Ying Zhou ◽  
Lan Jiang
Keyword(s):  
Transmission Lines ◽  
Southwest China ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Seismic Action ◽  
The Finite Element Method ◽  
Three Dimensional Model ◽  
Deformation Law ◽  
Prone Area ◽  
Internal Forces

Southwest area of china is the zone of the transmission lines which often happens icing disaster. It is also an earthquake-prone area, also influenced by the interaction between ice and earthquake. This article uses the finite element method (fem), establishing three-dimensional model for steel towers in southwest china, to analyze the dynamic performance of the ice condition and the analysis of seismic action. The aim is to get internal forces for steel towers under the action of earthquake and deformation law along with the change of ice thickness.

Influence of the Different Design Parameters to the Centrifugal Compressor Tip Clearance Loss

2011 ◽  
Author(s):  
Teemu Turunen-Saaresti ◽  
Ahti Jaatinen
Keyword(s):  
Centrifugal Compressor ◽  
Tip Clearance ◽  
Design Parameters ◽  
Clear Correlation ◽  
Compressor Stage ◽  
Centrifugal Compressors ◽  
Blade Number ◽  
Overall Performance ◽  
Specific Speed

In this paper the effect of the tip clearance was studied with six different centrifugal compressors and data available in literature. The changes in the overall performance of the compressor stage were examined. The aim was to study the influence of the different design parameters to the tip clearance loss. It was evident by the previous studies that the sensitivity of the centrifugal compressor to the tip clearance loss varies with different designs. However, for the designer it is important to know the effect of the tip clearance loss in order to initially evaluate the quality of different designs. Analysis of the data demonstrated that no clear correlation between the sensitivity of the tip clearance loss and the specific speed, the diffusion ratio, the blade number and the ratio of blade heights exists.

Advanced Hydrodynamic Design of Vertical Diffuser Pumps Using Computational Fluid Dynamics

2002 ◽  
Author(s):  
Kristis V. Michaelides ◽  
Antonios Tourlidakis
Keyword(s):  
Development Process ◽  
Three Dimensional ◽  
Detailed Examination ◽  
Product Development Process ◽  
Design Parameters ◽  
Factors Affecting ◽  
Performance Predictions ◽  
Overall Performance ◽  
Industrial Use ◽  
Optimisation Procedure

The current paper describes an investigation into the industrial use of CFD and other computational technologies for the three-dimensional hydrodynamic design of vertical diffuser pumps and outlines the complete product development process. Detailed description of the complete design process is described and numerous CFD predictions of the flow are presented with detailed examination of the several factors affecting the hydrodynamics of impeller and diffuser and staging of the pump. Furthermore, variations of important geometrical design parameters based on the design optimisation procedure are discussed in accordance to the CFD results. The capabilities of the 3-D hydrodynamic design through CFD and the importance of the three dimensional blade geometry are demonstrated by the fact that two different pump impellers were designed based on strict design constraints affecting their basic dimensions. Finally, an overview of the functional prototypes development is described and comparisons are carried out between overall performance predictions and experimental results.

A Novel Fuzzy Based Control Scheme for Power Quality Enhancement in Grid Connected System

2014 ◽  
Vol 573 ◽  
pp. 304-309
Author(s):  
M. Muhaidheen ◽  
S. Muralidharan
Keyword(s):  
Power Quality ◽  
Power Flow ◽  
Reactive Power ◽  
Dynamic Performance ◽  
Consumer Products ◽  
Point Of View ◽  
Modern World ◽  
Simple Method ◽  
Control Scheme

Today’s modern world, all the frequently using electrical appliances ranging from consumer products to state of the art industrial products exhibits nonlinearity. Due to this the quality of the Grid becomes worse. It also pollutes, electrical point of view, the other healthy systems also. In this connection, various approaches have been put forth to minimize the harmonics in the supply which in turn improve the quality of the power Grid in terms of improving real, reactive power flow and power factor. This paper proposes the novel approach to enhance the power quality in the grid by using simple method to extract the harmonic current compared to time consuming d-q modelling approach. This novel control techniques exhibit excellent dynamic performance, easy to implement, high robustness and stability. The proposed control scheme is verified by comparing its performance with its counterparts. In this connection a testing scheme is developed and tested with the help of MATLAB/SIMULINK package and it agrees in line with our proposed scheme.

Optimal Design and Characteristic Analysis of a Special Type Gear Test Rig

2011 ◽  
Vol 415-417 ◽  
pp. 590-593
Author(s):  
Xiang Yang Jin ◽  
He Teng Wang ◽  
Li Zhang ◽  
Li Li Zhao ◽  
Xiang Yi Guan
Keyword(s):  
Mechanical Design ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Running Economy ◽  
Test Accuracy ◽  
Test Rig ◽  
Characteristic Analysis ◽  
Solid Models ◽  
Kinematics Simulation ◽  
Load Factors

In this article, the rationality to determine the mechanical design of the test rig for the beveloid gear with intersecting axes has been verified, and the overall performance of the test rig has been predicted. First, the three-dimensional solid models of all components have been established, and the virtual prototype simulation technology has been used for its kinematics simulation. Then, the static and dynamic performance of the key components has been analyzed. At last, the transfer matrix method has been used to analyze the torsional vibration mechanics of the closed gear test rig, so as to obtain the simulation curves of dynamic load factors of the test gear under different speeds. The results show that the whole test rig can be applied in the gear test with intersecting axes, without the auxiliary test gear pair, which has good gearing test accuracy. Besides, the test rig itself has low costs and good running economy.

The Optimal Parameters Design of Drawing for the Y Type Teeth Using Four Y-Slot Die-Wheel

2013 ◽  
Vol 634-638 ◽  
pp. 2889-2893
Author(s):  
Jui Chang Lin ◽  
Bean Yin Lee ◽  
Dai Jia Juan
Keyword(s):  
Simulation Analysis ◽  
Poor Performance ◽  
Design Parameters ◽  
Drawing Process ◽  
The Finite Element Method ◽  
Forming Process ◽  
Slot Die ◽  
Quality Of Products ◽  
High Level

Zipper manufacturer always requires Y type zipper to design clothes. To meet the huge global demand, the high-precision forming process is required to improve production speed and production accuracy. The basic component of Y type zipper is the metal Y type teeth. The poor design of drawing process without optimization will result in bad quality of products. The most common defects of Y type teeth drawing process included (1) the teeth size error caused zipper sudden opening, two rows of Y type teeth cannot be close together; (2) zipper does not pull smoothly, it needs more pull force; (3) too much residual material cause higher cost and poor performance; (4) unstable quality cannot reach the standard of high level zipper. This article uses the finite element method to simulate the drawing process of copper Y type teeth. Computer-aided analysis software ABAQUS CAE is applied to execute drawing process simulation analysis and to obtain the optimal design parameters of drawing. Based on the best modeling of the FEM prediction, the complicated relationships between the experiment drawing Y-slot die parameters and the max. deformed can be obtained, the max. deformed error is 7%.

Dynamic Optimization Design and Research of PingQiao of the Abnormal High Tower Crane Based on the FEM

2014 ◽  
Vol 543-547 ◽  
pp. 90-93
Author(s):  
Si Cong Yuan ◽  
Hua Xue ◽  
Feng An ◽  
Dong Hong Wang
Keyword(s):  
Finite Element ◽  
Dynamic Optimization ◽  
Optimization Design ◽  
Dynamic Performance ◽  
Metal Structure ◽  
Parametric Model ◽  
The Finite Element Method ◽  
Tower Crane ◽  
Set Up

The dynamic performance of PingQiao of abnormal high tower crane is particularly important to the whole structure. Using the finite element method to set up the finite element parametric model of PingQiao of the abnormal high tower crane, and then making dynamic analysis. Taking the analysis result as the objective function of the optimization design model,and using the optimization algorithm module of ANSYS to make dynamic optimization design of PingQiao structure,the quality of PingQiao of the abnormal high tower crane is effectively reduced, the dynamic performance of the metal structure is improved,this lays the foundation for the whole optimization.

The Analysis of Torsional Vibration of Coiler Drive System

2013 ◽  
Vol 455 ◽  
pp. 232-235
Author(s):  
Xue Wen Sun ◽  
Hai Bo Yang
Keyword(s):  
Cold Rolling ◽  
Three Dimensional ◽  
Drive System ◽  
The Finite Element Method ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Design And Manufacturing ◽  
Rolling Production ◽  
Dynamics Characteristic

Coiler is a very important equipment in the aluminum cold rolling production line. It plays an important role in improving the quality of the strip. In this essay, taken the aluminum cold rolling coiler drive system as the research object, in order to studying its dynamics characteristic, three-dimensional model has been built based on the finite element method. With the model, the aluminums weight has been verified, frequency and modal have been discussed, and the dangerous speed zone has been built by the first frequency. The result could serve as theoretical base for coiler design and manufacturing process.

scholarly journals A Framework for QoE-Aware 3D Video Streaming Optimisation over Wireless Networks

2016 ◽  
Vol 2016 ◽  
pp. 1-18 ◽  
Author(s):  
Ilias Politis ◽  
Asimakis Lykourgiotis ◽  
Tasos Dagiuklas
Keyword(s):  
Machine Learning ◽  
Wireless Networks ◽  
Heterogeneous Wireless Networks ◽  
Video Quality ◽  
Three Dimensional ◽  
Perceptual Quality ◽  
Test Bed ◽  
User Terminal ◽  
The Impact

The delivery of three-dimensional immersive media to individual users remains a highly challenging problem due to the large amount of data involved, diverse network characteristics, and user terminal requirements, as well as user’s context. This paper proposes a framework for quality of experience-aware delivering of three-dimensional video across heterogeneous wireless networks. The proposed architecture combines a Media-Aware Proxy (application layer filter), an enhanced version of IEEE 802.21 protocol for monitoring key performance parameters from different entities and multiple layers, and a QoE controller with a machine learning-based decision engine, capable of modelling the perceived video quality. The proposed architecture is fully integrated with the Long Term Evolution Enhanced Packet Core networks. The paper investigates machine learning-based techniques for producing an objective QoE model based on parameters from the physical, the data link, and the network layers. Extensive test-bed experiments and statistical analysis indicate that the proposed framework is capable of modelling accurately the impact of network impairments to the perceptual quality of three-dimensional video user.

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