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2019中国汽车工程学会年会

作者： Chen Yong Wang Yuheng Li Guangxin Yu Miao Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles Hebei University of Technology

An energy loss during the operation of the Electric 2-Speed Automatic Transmission,which will generate heat and make the transmission bear a thermal ***,it is necessary to make a steady-state thermal analysis of *** this paper,the mathematical model of transmission is established based on the theory of heat *** on the finite element theory,the temperature field distribution and heat flux distribution of the whole transmission are *** results show that the modification of the gear height on the addendum can reduce the temperature of the gear;Transmission lubrication system need to be further optimized;The heat convection between the wall surface of the box has little effect on the *** temperature of each part conform to the requirements of the *** analysis results provide a theoretical basis for the optimization of transmission efficiency.

关键词： electric vehicles automatic transmission finite element steady-state thermal analysis

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Modal and thermal analysis of a Modified Connecting Rod of an Internal Combustion Engine Using Finite Element Method

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Modeling and Numerical Simulation of Material Science 2023年第3期13卷 29-49页

作者： Nkrumah Jacob Kwaku Baba Ziblim Sulemana Yahaya Sherry Kwabla Amedorme Automotive Engineering Research Institute Jiangsu University Zhenjiang China Department of Automotive Engineering Tamale Technical University Tamale Ghana Department of Mechanical Engineering Tamale Technical University Tamale Ghana Department of Mechanical and Automotive Engineering Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development Kumasi Ghana

The connecting rod is one of the most important moving components in an internal combustion engine. The present work determined the possibility of using aluminium alloy 7075 material to design and manufacture a connecting rod for weight optimisation without losing the strength of the connecting rod. It considered modal and thermal analyses to investigate the suitability of the material for connecting rod design. The parameters that were considered under the modal analysis were: total deformation, and natural frequency, while the thermal analysis looked at the temperature distribution, total heat flux and directional heat flux of the four connecting rods made with titanium alloy, grey cast iron, structural steel and aluminium 7075 alloy respectively. The connecting rod was modelled using Autodesk inventor2017 software using the calculated parameters. The steady-state thermal analysis was used to determine the induced heat flux and directional heat flux. The study found that Aluminium 7075 alloy deformed more than the remaining three other materials but has superior qualities in terms of vibrational natural frequency, total heat flux and lightweight compared to structural steel, grey cast iron and titanium alloy.

关键词： Connecting Rod steady-state thermal analysis Deformation Heat Flux thermal and Modal Finite Element Method

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