Study on the Steady State Thermal Analysis Method of Accessory Transmission System

2012 ◽  
Vol 198-199 ◽  
pp. 162-166
Author(s):  
Yan Yan Shi ◽  
Lin Li ◽  
Xiang Feng Kong ◽  
Jin Hua Li ◽  
Hong Sun
Keyword(s):  
Thermal Analysis ◽  
Temperature Field ◽  
Steady State ◽  
Transmission System ◽  
Variation Principle ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Finite Element Software ◽  
Heat Transfer Theory ◽  
Steady State Temperature

The mathematical model of steady state thermal analysis of accessory transmission system is built according to heat transfer theory, the governing equation functional of the steady state temperature field of accessory transmission system is derived on the basis of the variation principle, and the method to calculate the steady state temperature field of accessory transmission system is proposed with the finite element software ANSYS and its secondary switching language APDL. The result shows that the prediction of temperature field fit in with the heat flow law, then the correctness and validity of the proposed thermal analysis method is verified.

A Temperature Field Model of Complicated Thermal Analysis System Based on Thermal Network Method

2013 ◽  
Vol 694-697 ◽  
pp. 695-698 ◽  
Author(s):  
Ze Jin Lin ◽  
Jie Hong Yuan ◽  
Yuan Li ◽  
Xi Jie Yan ◽  
Shi Ming Zhou ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Temperature Field ◽  
Transient Temperature ◽  
Thermal Network ◽  
Heat Transfer Theory ◽  
Steady State Temperature ◽  
Network Method ◽  
Temperature Field Model ◽  
Thermal Network Method ◽  
Analysis System

Based on the thermal network method and heat transfer theory, a temperature field simulation model of complicated thermal analysis system was established by Matlab Simulink. Based on the model, a steady-state temperature field of a helicopter tail reducer was calculated in the normal lubrication. The model is more accurate and reliable than the traditional algorithm. Meanwhile, the model can calculate the time-varying process of the temperature field, corresponding to the transient temperature field.

Thermal analysis method of electromagnetic linear actuator based on multiphysics coupling model

2021 ◽  
pp. 1-17
Author(s):  
Geng Wang ◽  
Renjing Gao ◽  
Qi Wang ◽  
Shutian Liu
Keyword(s):  
Thermal Analysis ◽  
Thermal Characteristics ◽  
Coupling Model ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Performance Requirements ◽  
Wide Range ◽  
Multiphysics Coupling ◽  
Simulation And Experiment ◽  
Electromagnetic Linear Actuator

Electromagnetic linear actuators (ELAs) may be confronted with unsatisfactory performance when subjected to overheating. Therefore, it is significant to clarify its thermal characteristics and design the thermal performance requirements. A thermal analysis method based on multiphysics coupling model was presented, which uses the non-simplified loss distribution as the heat source to calculate the temperature field, adjusts the material properties by temperature, and considers the interaction between motion (including impact) and loss. More importantly, an improved universal equivalent winding to satisfy the condition of real compact concentrated winding was developed. Finally, the validity of this approach was verified through the experiment, and the regularity of temperature was summarized. The results show that the error of simulation and experiment is less than 6% and the permissible continuous operation frequency is no more than 30 Hz. The approach proposed in this paper can be employed not only to the ELA, but also to the design and analysis a wide range of electromagnetic machines.

Study on the inhibitor rate evaluation by thermal analysis method

2014 ◽  
pp. 237-243
Author(s):  
Changfu Xu ◽  
Zhongya Zheng ◽  
Shasha Yuan ◽  
Haifei Yao ◽  
Haijun Wu
Keyword(s):  
Thermal Analysis ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Rate Evaluation

scholarly journals RESEARCH OF STABLE TETRAHEDRON OF LiF-LiVO3-NaBr-NaVO3 QUATERNARY MUTUAL SYSTEM OF Li,Na||F,Br,VO3

2018 ◽  
Vol 59 (4) ◽  
pp. 47
Author(s):  
Ivan K. Garkushin ◽  
Inna N Samsonova ◽  
Tatiana V. Gubanova
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Phase Equilibria ◽  
Quaternary System ◽  
Eutectic Point ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Mutual System

Phase equilibria of quaternary system LiF-LiVO3-NaBr-NaVO3 were studied with differential thermal analysis method. The temperature and composition of eutectic point was determined: Е 458 ºС: 11.2% LiF, 57.2% LiVO3, 16% NaBr, 15.6% LiVO3.

Piezothermoelasticity and Control of Piezoelectric Laminates Exposed to a Steady-State Temperature Field

1993 ◽  
Author(s):  
H. S. Tzou ◽  
R. Ye
Keyword(s):  
Temperature Field ◽  
Steady State ◽  
Degrees Of Freedom ◽  
Sensors And Actuators ◽  
System Equation ◽  
Thermal Fields ◽  
Steady State Temperature ◽  
And Control ◽  
Internal Degrees Of Freedom

Abstract Piezothermoelastic effects of distributed piezoelectric sensors and actuators are investigated. Vibration control of piezoelectric laminates subjected to a steady-state temperature field is studied. A new 3-D piezothermoelastic finite element with three internal degrees of freedom is formulated using a variational formulation. A system equation for the piezoelectric continuum exposed to combined elastic, electric, and thermal fields is formulated. Distributed sensing and control equations are derived. All these effects are studied in a case study.

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