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International Conference on Power Transmissions, ICPT 2016

作者： Hua, Lin Zheng, Fangyan Han, Xinghui Chen, Dingfang Li, Bo School of Automotive Engineering Hubei Key Laboratory of Advanced Technology of Automotive Components Wuhan University of Technology Wuhan China School of Logistics Engineering Wuhan University of Technology Wuhan China

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FE simulation and experiment study on flow forming of inner-splined flange

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Procedia Engineering 2017年 207卷 621-626页

作者： Dan Zhao Jiadong Deng Huajie Mao Dongsheng Qian Hengan Ou School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan 430070 China School of Automotive Engineering Wuhan University of Technology Wuhan 430070 China Department of Mechanical Materials and Manufacturing Engineering University of Nottingham Nottingham NG7 2RD UK

Inner-splined flange (ISF) is a special component with multi-splines on the inner surface. This non-rotary feature is traditionally manufactured by machining which has disadvantages of material waste and insufficient material properties as compared to plastically formed parts. Flow forming is an innovative rotary incremental forming technique to manufacture hollow profile parts. During the forming process, a workpiece is positioned on a die with profile section which makes rotating motion. A roller tool with multi-rolling balls is pressed on the outer surface of the workpiece, which makes axial feed movement. This allows the workpiece to be formed gradually to the expected section shape by the radial pressure between the die and rolling balls. In this paper, flow forming was adopted to manufacture an ISF. To demonstrate the feasibility, FE simulations for the flow forming of ISF were tried including different process parameters. The metal flow law during the forming process was analyzed, which helps develop a better understanding of the deformation mechanism of this flow forming concept. The effects of different process parameters were discussed, which enables a design basis for this technique. Based on the simulation results, experiments for the flow forming of ISF were carried out. The results show that the ISF can be net-shaped by the flow forming potentially. This study offers an innovative potential method for manufacturing ISF with high precision and performance and it maybe spread for other hollow profile parts.

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Mini review on the significance nano-lubricants in boundary lubrication regime

arXiv

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arXiv 2017年

作者： Ali, Mohamed Kamal Ahmed Abdelkareem, Mohamed A.A. Elagouz, Ahmed Essa, F.A. Xianjun, Hou Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China Automotive and Tractors Engineering Department Faculty of Engineering Minia University El-Minia61111 Egypt School of Mechanical and Electronic Engineering Wuhan University of Technology Wuhan430070 China

This article briefly reviews the significance nano-lubricants and assesses their effectiveness to provide the most promising approaches to reduce the friction and anti-wear/scuffing over the boundary regime. The main purpose of this review is to summarize the present knowledge about major advantages of the nanomaterials as nanolubricant additives in boundary lubrication. It is very complex regime involving surface topography, metallurgy, physical adsorption and chemical reactions. There is no intent to present an exhaustive survey of the literature, but it presents the main reasons for decreasing the friction and wear based on lubricated by nanolubricants during heavy load and low-speed conditions. Copyright © 2017, The Authors. All rights reserved.

关键词： Wear resistance

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Design and simulation of a foldable hexagon array solar panel for electric vehicles

Design and simulation of a foldable hexagon array solar pane...

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Youth Academic Annual Conference of Chinese Association of Automation (YAC)

作者： Yuhang Huang Xiaoxu Wei Chong Liu Anqi Zheng Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan China Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan Hubei CN

Hexagonal array solar cell as the energy of the solar car, and further analyzes it. This article describes the working principle of the solar cells. Establishing the simulation model for the solar mathematical module, and get the same solar cells output characteristic curves in any number of series and parallel at different temperatures and different light intensity based on MATLAB/SIMULINK. Meanwhile designing an array solar panel consisted of various kinds of different parameters solar cells. By analyzing the output characteristics of the actual solar cells module, verify the feasibility and the importance of the simulation module.

关键词： Handheld computers Resistance Analytical models Photovoltaic cells Simulation Computational modeling Photovoltaic systems

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Study on crack propagation of a bearing inner-ring under cyclic loading

Study on crack propagation of a bearing inner-ring under cyc...

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The 2016 International Conference on advanced Materials, Structures and Mechanical Engineering (ICAMSME 2016)

作者： Jie Zheng Xinghui Han Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology

With the development of social information in the background of big data,this paper puts forward the practical problems in the construction of network course of "metal materials and heat treatment".The aim of the study which established on the basis of the Internet will provide us more comprehensive supports and services,and more friendly practical systems for *** research will build a public open platform for the cultivation of high quality talents and the promotion of lifelong learning *** paper focuses on the theoretical value of the network course construction,construction objectives,the content and advantages of the *** results of this paper are helpful to improve the teaching effects of the course of "metal materials and heat treatment" in vocational school.

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Influence of Alignment Errors on Contact Pressure during Straight Bevel Gear Meshing Process

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Chinese Journal of Mechanical Engineering 2015年第6期28卷 1089-1099页

作者： HAN Xinghui HUA Lin DENG Song LUO Qiuping Hubei Key Laboratory of Advanced Technology for Automotive Components School of Automotive EngineeringWuhan University of Technology

Straight bevel gears are widely applied in automotive, aerospace, chemical and many other fields as one of the most common type of gears. Currently, the researches on straight bevel gears have focused on the fields of fatigue, wear, noise and vibration, while little attention is paid to the effect of multiple alignment errors on the gear tooth wear. To study the influence of alignment errors on the gear tooth wear, a simulated model of a straight bevel gear pair is established. Then, the contact pressure on the tooth surface is analyzed under the various alignment errors according to the Archard wear relationship. The main combinations of alignment errors played vital roles on the tooth wear are investigated. The result shows that under the single alignment error, the contact pressure moves to the tooth heel and increases greatly at here when ？P=0.1 or ？G=0.1; when ？E=–0.03, the contact pressure greatly increases at the tooth heel, but it obviously increases at the tooth toe when ？E=0.03; the alignment error ？γ=1 has little effect on the contact pressure on the tooth surface. Moreover, the combination of ？P, ？G, ？E〈0 and ？γ is the most dangerous type among the multiple alignment errors. This research provides valuable guidelines for predicting the tooth wear under various alignment errors.

关键词： straight bevel gear multiple alignment errors contact pressure wear

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Research on the Effect of the Torsion Beam Suspension Spring Hard Point Location on Spring's Vertical Load

Research on the Effect of the Torsion Beam Suspension Spring...

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2016 2nd Workshop on advanced Research and technology in Industry Applications(WARTIA 2016)

作者： Sheng-li Yu Miao-hua Huang Huan Luo Wuhan University of Technology Hubei Key Laboratory of Advanced Technology for Automotive Components Hubei Collaborative Innovation Center for Automotive Components Technology

ISBN: (纸本)9781510824430

For some passenger car's torsion beam suspension appearing fatigue fracture problem,a method of structure optimization is *** changing the hard point location of the torsion beam suspension spring,the vehicle's coupled model is *** carrying out the vehicle dynamic simulation analysis,comparing the results of analysis,researching the variation rules of the helical spring vertical load with the spring hard point location,search for the best install position of helical *** results show that optimizing the spring's hard point location,can effectively reduce the helical spring vertical load and improve the fatigue life of torsion beam *** provides reference for the design of torsion beam suspension.

关键词： spring hard point location spring vertical load dynamic simulation fatigue life

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Design of a Cable Pulled Electric Parking Brake System for Light Commercial Vehicle

Design of a Cable Pulled Electric Parking Brake System for L...

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3rd International Conference on Vehicle,Mechanical and Electrical Engineering(ICVMEE 2016)

作者： XIN JI SHAOHUA ZHONG Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Hubei Collaborative Innovation Center for Automotive Components Technology

In order to solve the insufficient parking brake force and other problems of mechanical parking brake system in light commercial vehicle,a cable pulled electric parking brake system had been *** hardware and the control strategy of the system had been put forward;In order to verify the feasibility and reliability of cable pulled electric parking brake system,the modeling and simulation of mechanical and electrical parts were completed with MATLAB/*** simulation results show that the designed maximum braking torque is 5107.38 Nm,which meets the national related standard for parking brake *** whole parking brake process only takes 1064.1 ms,it is very *** design makes parking brake system more intelligent,improves the safety and comfort of light commercial vehicle.

关键词： EPB simulation Design of a Cable Pulled Electric Parking Brake System for Light Commercial Vehicle Cable

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A numerical algorithm of tooth profile of non-circular cylindrical gear

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AIP Conference Proceedings 2017年第1期1864卷

作者： Xuan Wang Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan 430070 China

Non-circular cylindrical gear (NCCG) is a common form of non-circular gear. Different from the circular gear, the tooth profile equation of NCCG cannot be obtained. So it is necessary to use a numerical algorithm to calculate the tooth profile of NCCG. For this reason, this paper presents a simple and highly efficient numerical algorithm to obtain the tooth profile of NCCG. Firstly, the mathematical model of tooth profile envelope of NCCG is established based on the principle of gear shaping, and the tooth profile envelope of NCCG is obtained. Secondly, the polar radius and polar angle of shaper cutter tooth profile are chosen as the criterions, by which the points of NCCG tooth cogging can be screened out. Finally, the boundary of tooth cogging points is extracted by a distance criterion and correspondingly the tooth profile of NCCG is obtained.

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A highly robust power window anti-pinch algorithm based on approximate integral method

A highly robust power window anti-pinch algorithm based on a...

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2016 International Conference on Automotive Engineering,Mechanical and Electrical Engineering(AEMEE 2016)

作者： Heng Fu Jianguo Liu School of Automotive Engineering Wuhan University of Technology Hubei Key Laboratory of Advanced Technology for Automotive Components Hubei Collaborative Innovation Center for Automotive Components Technology

Reliability is an important indicator for measuring the anti-pinch function of the power window. Under circumstances such as pit roads, pulse width of the Hall signal is disturbed and the pulse width curve can generate spike noise. Considering the noise, a high reliability anti-pinch algorithm based on approximate integral is proposed. Firstly, the position of the approximate integral of the Hall signal pulse width curve is determined and then the curve is approximately integrated. Finally the integral area and threshold are compared;most of the spike noise can be filtered out, improving the correctness of judgement as to whether to prevent the clip. Using MATLAB to establish the simulation model of the power window, the simulation results show that this algorithm has much more reliability.

关键词： Electric glass elevator Anti-pinch control system Hall signal Gauss filter Integration method

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