Study on the Contact Properties for Involute Cylindrical Gear Based on Thermal Analysis

2013 ◽  
Vol 339 ◽  
pp. 510-514
Author(s):  
Yan Yan Shi ◽  
Mao Qiang Zhang ◽  
Xiang Feng Kong ◽  
Jin Hua Li
Keyword(s):  
Temperature Field ◽  
Stress Distribution ◽  
Field Distribution ◽  
High Speed ◽  
Thermal Deformation ◽  
Thermal Loading ◽  
Contact Condition ◽  
Temperature Field Distribution ◽  
Cylindrical Gear ◽  
Gear Teeth

Aim to the working properties of aviation accessory transmission gear, such as high speed and heavy load, temperature field distribution regularity of standard involute cylindrical gear is analyzed based on indirect coupling analysis method of ANSYS software. And gear surface contact stress distribution regularity under the action of thermal loading and mechanical load is also analyzed. Gear surface real contact condition under working station is analyzed. It is shown from the result that the high speed and heavy loading on the gear teeth produces the bigger temperature gradient, and thermal deformation regularity of gear teeth is determined by temperature field distribution style, while thermal deformation of gear teeth changes contact condition and stress distribution regularity between meshing gear surfaces.

Temperature Field Simulation on the Connecting Rod of High Speed Press

2012 ◽  
Vol 482-484 ◽  
pp. 322-326 ◽  
Author(s):  
Min Tang ◽  
Fang Jia
Keyword(s):  
Temperature Field ◽  
High Speed ◽  
Thermal Deformation ◽  
Thermal Characteristics ◽  
Working Environment ◽  
Connecting Rod ◽  
Temperature Field Distribution ◽  
Element Analysis ◽  
Thermal Equilibrium Condition ◽  
Good Agreement

This study is focused on the temperature field distribution of the connecting rod. The temperature field and the time for reaching thermal equilibrium condition of the rod in a certain working environment are examined by means of finite element analysis (FEA). A verification experiment is implemented on the connecting rod. Comparison between our experiment and simulation shows that simulation values are in good agreement with experimental data. Findings from the study are supposed to provide a basis for reduction of the thermal deformation of rod as well as for improvement of the thermal characteristics and precision of high speed press.

scholarly journals Three-Dimensional Electro-Thermal Analysis of a New Type Current Transformer Design for Power Distribution Networks

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1792
Author(s):  
Bingbing Dong ◽  
Yu Gu ◽  
Changsheng Gao ◽  
Zhu Zhang ◽  
Tao Wen ◽  
...  
Keyword(s):  
Boundary Condition ◽  
Temperature Field ◽  
Temperature Gradient ◽  
Field Distribution ◽  
Distribution Network ◽  
Current Transformer ◽  
Internal Temperature ◽  
Temperature Field Distribution ◽  
Type Design ◽  
New Type

In recent years, the new type design of current transformer with bushing structure has been widely used in the distribution network system due to its advantages of miniaturization, high mechanical strength, maintenance-free, safety and environmental protection. The internal temperature field distribution is an important characteristic parameter to characterize the thermal insulation and aging performance of the transformer, and the internal temperature field distribution is mainly derived from the joule heat generated by the primary side guide rod after flowing through the current. Since the electric environment is a transient field and the thermal environment changes slowly with time as a steady field under the actual conditions, it is more complex and necessary to study the electrothermal coupling field of current transformer (CT). In this paper, a 3D simulation model of a new type design of current transformer for distribution network based on electric-thermal coupling is established by using finite element method (FEM) software. Considering that the actual thermal conduction process of CT is mainly by conduction, convection and radiation, three different kinds of boundary conditions such as solid heat transfer boundary condition, heat convection boundary condition and surface radiation boundary condition are applied to the CT. Through the model created above, the temperature rise process and the distribution characteristics of temperature gradient of the inner conductor under different current, different ambient temperatures and different core diameters conditions are studied. Meanwhile, the hottest temperature and the maximum temperature gradient difference are calculated. According to this, the position of weak insulation of the transformer is determined. The research results can provide a reference for the factory production of new type design of current transformer.

scholarly journals The study of three-dimensional temperature field distribution reconstruction using ultrasonic thermometry

AIP Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 075007 ◽  
Author(s):  
Ruixi Jia ◽  
Qingyu Xiong ◽  
Kai Wang ◽  
Lijie Wang ◽  
Guangyu Xu ◽  
...  
Keyword(s):  
Temperature Field ◽  
Field Distribution ◽  
Three Dimensional ◽  
Temperature Field Distribution
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