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Numerical and experimental study on failure behavior of steel-aluminium mechanical clinched joints under multiple test conditions

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International Journal of Lightweight Materials and Manufacture 2019年第1期2卷 72-79页

作者： Song, Yanli Yang, Lulu Zhu, Genpeng Hua, Lin Liu, Runze Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of Technology Wuhan430070 China School of Automotive Engineering Wuhan University of Technology Wuhan430070 China

In this work, the numerical and experimental study was performed to explore the mechanical properties and failure behavior of steel-aluminium mechanical clinched joints under multiple test conditions. The stress distribution of the clinched joints and the failure mode were analyzed using finite element analysis software ABAQUS. The Gurson-Tvergaard-Needleman (GTN) model was used to simulate damage and failure of the joints. The experimental tests were conducted for the verification. It was found that the clinched joints under shear condition had a peak force of 4354N, which was much higher than that of the peel (624N) and cross tensile (1046N) conditions, while the peak load displacement and failure displacement have the opposite law. The failure mode of shear condition was neck fracture, while that of tensile and peel conditions were both pulling out failure. The finite element simulation results were in good agreement with the experimental ones and the failure mode was consistent. The Gurson-tvergaard-Needleman (GTN) model can accurately predict the mechanical properties and failure mode of clinched joints. © 2018 The Authors

关键词： Failure modes

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The development of vehicle diagnostic system based on Android platform

The development of vehicle diagnostic system based on Androi...

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International Conference on Connected Vehicles and Expo, ICCVE 2015

作者： Jie, Hu Changlin, Liu Fuwu, Yan Zeyang, Zhang Wuhan University of Technology Hubei Key Laboratory of Advanced Technology for Automotive Components Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan430070 China

ISBN: (纸本)9781509002641

To solve troubleshooting problems of vehicles, this paper proposes a novel architecture of vehicle diagnostic system. The system is made up of on-board network layer, business logic layer and cloud service layer. The paper is focused on the development process of the system. The business logic layer includes mobile vehicle platform and equipped vehicle platform. Mobile vehicle platform includes mobile terminals and VCI, and equipped vehicle platform involves designing embedded system hardware and driver, calling JNI layer and developing diagnostic software. In addition, the system uses a modular architecture to meet the requirements of rapid development of new vehicle's diagnostic functions. The cloud service layer mainly includes data storage server and server management system. The test research in real vehicles shows that the system can not only reliably achieve basic diagnosis and real-time data acquisition, but also has the advantages of further updating, remote diagnosis and the rapid development of new vehicle models. Based on this information, we can carry out in-depth mining and expand the applications, such as real-time traffic estimation and performance estimation of key components. © 2015 IEEE.

关键词： Network layers

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Research on wireless communication strategy in online automatic test system for vehicle driving wandering 14

Research on wireless communication strategy in online automa...

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14th Symposium on International Automotive technology, SIAT 2015

作者： Zhou, Zhiteng He, Yaohua Wang, Dong Hubei Key Laboratory of Advanced Technology for Automotive Components Automobile Engineering Institute Wuhan University of Technology 205 Luoshi Road Hongshan District Wuhan430070 China

Aiming to meet vehicle driving safety requirements in automakers, this essay firstly discusses the application of vehicle driving wandering test system. And the real-time performance and reliability of wireless AP communication are the premise in this test system. However, when the test situation is changed especially in strong electromagnetic situation, the communication will be easily interrupted, leading to the delay problem. In order to maintain the real-time performance, this essay proposes an improvement method through analyzing the timeline of dynamic communication progress from the perspective of transport layer in TCP/IP protocol. Then, based on the analysis of Markov Chain model of the communication process, it also discusses the potential factors of the delay problem and puts forward the time division strategy which can effectively complete the authentication in real-time. And the practical test proves that the time division strategy meeting the need of engineering test has higher communication performance under the real complicated electromagnetic situation. Copyright © 2015 SAE International and Copyright © SAEINDIA.

关键词： Vehicles

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Influence of Electroshocking Treatment on Microstructure and Mechanical Properties of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Thin-Wall Specimen Manufactured by Laser Melting Deposition

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 145-158页

作者： Yan Wen Xuan Sun Jian Zhou Bingliang Liu Haojie Guo Yuxin Li Fei Yin Liqiang Wang Lechun Xie Lin Hua Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan430070China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan430070China Hubei Longzhong Laboratory Xiangyang441000China Shanghai Aircraft Manufacturing Co. Ltd.Commercial Aircraft Corporation of ChinaLtd.Shanghai201324China State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China

In order to improve the properties of titanium alloys manufactured by laser melting deposition(LMD),the electroshocking treatment(EST)was proposed in this *** effects of EST on microstructure and mechanical properties of LMD Ti-6.5Al-3.5Mo-1.5Zr-0.3Si were *** results showed that the width of the heat affected band decreased and disappeared under the thermal and athermal effects of EST,resulting in the uniform *** the microstructure,theαlaths became coarser gradually,and the quantity ofα/βinterface was *** reduction of the quantity ofα/βinterface leads to make less resistant to dislocation,resulting in the reduction in hardness and *** discontinuous grain boundaryαphase and nucleationαcolony near grain boundary inhibited the crack propagation and improved the ***,EST can manipulate the microstructure and improve the mechanical properties of LMD titanium alloys.

关键词： Electroshocking treatment(EST) Laser melting deposition(LMD) Titanium alloy Microstructure Mechanical properties

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Path-Tracking Control for Four-Wheel Steer/Drive Agricultural Special Electric Vehicles Considering Stability

Path-Tracking Control for Four-Wheel Steer/Drive Agricultura...

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SAE Automotive Technical Papers, WONLYAUTO 2024

作者： Huang, Bin Yang, Nuorong Ma, Liutao Wei, Lexia Liuzhou Wuling New Energy Automobile Co. Ltd. China Wuhan University of Technology Hubei Key Laboratory of Advanced Technology for Automotive Components China

With the modernization of agriculture, the application of unmanned agricultural special vehicles is becoming increasingly widespread, which helps to improve agricultural production efficiency and reduce labor. Vehicle path-tracking control is an important link in achieving intelligent driving of vehicles. This paper designs a controller that combines path tracking with vehicle lateral stability for four-wheel steer/drive agricultural special electric vehicles. First, based on a simplified three-degrees-of-freedom vehicle dynamics model, a model predictive control (MPC) controller is used to calculate the front and rear axle angles. Then, according to the Ackermann steering principle, the four-wheel independent angles are calculated using the front and rear axle angles to achieve tracking of the target trajectory. For vehicle lateral stability, the sliding mode control (SMC) is used to calculate the required direct yaw moment control (DYC) of the vehicle, and wheel torque distribution is carried out considering the front and rear axle loads and road adhesion coefficient. CarSim and MATLAB/Simulink were chosen to build a joint simulation platform, and simulation experiments were conducted under two working conditions: high adhesion road surface and low adhesion road surface. The simulation results showed that the controller designed in this paper can improve the lateral stability of the vehicle while ensuring good path-tracking accuracy. © 2024 SAE International. All rights reserved.

关键词： Adhesion

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Performance and mechanism analysis of EMA-GMA modified PMMA/ASA alloy 8

Performance and mechanism analysis of EMA-GMA modified PMMA/...

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2024 8th International Conference on Energy technology and Materials Science, ICETMS 2024

作者： Gu, Zhaohui Wang, Hui Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China

This article examines the impact of the EMA-GMA combination on the mechanical characteristics, fluidity, and glass transition temperature of PMMA/ASA alloy and uses scanning electron microscopy to characterize the modified PMMA/ASA alloy. The findings indicate that the addition of 5% EMA-GMA to PMMA/ASA significantly enhances its fracture resistance without compromising its stiffness. When the additional amount of EMA-GMA exceeds 10%, the mechanical properties and fluidity of the alloy begin to decline significantly. EMA-GMA within 15% can promote PMMA/ASA compatibility. © Published under licence by IOP Publishing Ltd.

关键词： Fluidity

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Fuzzy PID Control of Parallel 6-DOF Motion Platform 5

Fuzzy PID Control of Parallel 6-DOF Motion Platform

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5th International Conference on Intelligent Control, Measurement and Signal Processing, ICMSP 2023

作者： Liu, Jiyuan Yu, Houyu Wang, Xujie Wuhan Unive-rsity of Technology Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan China

ISBN: (纸本)9798350336030

In order to solve the control problem of the parallel 6-DOF motion platform, a fuzzy controller is designed to self-tune the PID control parameters, and a fuzzy PID controller is formed to control the actuator electric cylinder. SimMechanics/Simulink are used to establish the simulation model of the parallel 6-DOF motion platform, and the traditional PID control and fuzzy PID control are used to its control respectively, and the comparison is made. The research shows that the parameter self-tuning fuzzy PID control method has good control accuracy and response speed. © 2023 IEEE.

关键词： Fuzzy control

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Evaluation of microstructure variation of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy manufactured by laser melting deposition after electroshocking treatment 9

Evaluation of microstructure variation of Ti-6.5Al-3.5Mo-1.5...

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9th International Conference on Energy Materials and Electrical Engineering, ICEMEE 2023

作者： Sun, Xuan Liu, Bingliang Wen, Yan Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China

ISBN: (纸本)9781510672765

Electroshocking treatment (EST) was a method to optimize the microstructure of titanium alloy. Under EST, the dense basket-weave structure in Ti-6.5Al-3.5Mo-1.5Zr-0.3Si (TC11) manufactured by laser melting deposition became sparse, and colony tissue nucleation grows near grain boundaries. The phase transformation induced by EST results in changes in the intensity and orientation of α and β textures in TC11, but α/β still obeyed the Burger orientation relationship, and the β phase content increased. At the same time, EST also promoted the dislocation movement near the grain boundary, and a mass of dislocation accumulation at the grain boundary increased the KAM value at the grain boundary. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Electroshocking treatment (EST) Laser melting deposition (LMD) Microstructure Texture Titanium alloy

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A study on the variation of mechanical properties of Ti-8Al-1Mo-1V titanium alloy after electro-shocking treatment 10

A study on the variation of mechanical properties of Ti-8Al-...

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2023 10th International Conference on advanced Manufacturing technology and Materials Engineering, AMTME 2023

作者： Yao, Yupeng Zhou, Jian Zhao, Hongjie Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China

The electro-shocking treatment (EST) was a rising method for the strengthening of titanium alloys. This work conducted EST on Ti-8Al-1Mo-1V titanium alloy specimens with the purpose to shed insights on the influence of EST on the properties of the alloy. The results indicated that the number of the pulse current increased, the properties of the Ti-8Al-1Mo-1V titanium alloy were notably improved, and the fracture mode varied from ductile fracture to a mixed fracture mode of brittle and ductile. © Published under licence by IOP Publishing Ltd.

关键词： Titanium alloys

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Research on microstructure variation of laser melting deposition Ti-6Al-4V under electroshocking treatment 10

Research on microstructure variation of laser melting deposi...

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2023 10th International Conference on advanced Manufacturing technology and Materials Engineering, AMTME 2023

作者： Bi, Jian Sun, Hongxin Wen, Yan Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China

In this work, electroshocking treatment (EST) was applied to Ti-6Al-4V prepared by laser melting deposition (LMD), and the microstructure and grain size were investigated. The size of the α phase was reduced, and the... 详细信息

关键词： Deposition

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