Simulation of the influence of brake disc geometry of its cooling efficiency

2020 ◽  
Vol 1 ◽  
pp. 39-52
Author(s):  
Kamil Antczak ◽  
Marcin Sosnowski
Keyword(s):  
Thermal Load ◽  
Brake Disc ◽  
Cooling Efficiency ◽  
Load Analysis

The article discusses the problem of brake disc cooling and its impact on safety. Three variants of brake disc cooling were made, which were then used in the thermal load analysis with the use of FEM.

Exploration of Enhanced Heat Dissipation Design for Brake Disc of High Speed Train

2010 ◽  
Author(s):  
Zhizhuang Yu ◽  
Yong Wang
Keyword(s):  
Thermal Load ◽  
High Speed ◽  
Gas Flow ◽  
Heat Dissipation ◽  
Brake Disc ◽  
Frictional Surface ◽  
Brake Shoe ◽  
Remarkable Effect ◽  
Gas Channel ◽  
Heat Transfer Theory

The function of the brake disc is to provide the ultimate guarantee of the safety of high speed trains. A braking unit includes two discs and two brake shoes. Braking performance depends on the pressure of the brake shoe and the friction between the disc and the shoe. When a train is braked, the brake disc endures a thermal load, which may affect the mechanical properties of the disc. If the thermal load exceeds the strength limit of the material, it could impact the safe running of the train. Therefore, the thermal load should be reduced as much as possible. Now the frictional surface of disc is plane and heat congregates easily in the surface area. The purpose of this paper is to explore a design for enhanced heat dissipation. A gas channel was used on the frictional surface to achieve the effect of heat dissipation. This design was analyzed by means of tribology and heat transfer theory. The distribution of gas flow was also researched. The temperature and stress field of the disc were simulated and analyzed. By the analysis it can be seen that the gas channel on the frictional surface of disc has a remarkable effect on heat dissipation in the brake disc.

Thermal Load Analysis of Piston in a Biogas Engine

2011 ◽  
Vol 63-64 ◽  
pp. 1005-1008
Author(s):  
Yi Wu ◽  
Yi Qiang Peng ◽  
Chong Huai Shi
Keyword(s):  
Thermal Stress ◽  
Thermal Load ◽  
Thermal Deformation ◽  
Temperature Fields ◽  
Supporting Evidence ◽  
Thermal Strength ◽  
Geometry Model ◽  
Combustion Duration ◽  
Load Analysis ◽  
Set Up

As a kind of new renewable energy, biogas is receiving more and more attentions. However, its combustion duration is longer than diesel, which causes the bigger thermal load of engine. A geometry model of a biogas engine’s piston is set up in Proe 4.0. The temperature fields, thermal stress and thermal deformation of the piston are calculated using ANSYS 10.0. The result shows that the thermal load of biogas engine is still within the thermal strength of the material, thus provides supporting evidence for the popularity of biogas.

Thermal Load Analysis of a Brake Disc for a 220t Mining Dump Truck

2012 ◽  
Vol 619 ◽  
pp. 188-194
Author(s):  
Xiao Fei Li ◽  
Wen Bo Ni ◽  
Xue Mei Wang
Keyword(s):  
Thermal Load ◽  
Simulation Analysis ◽  
Friction Pair ◽  
Element Model ◽  
Dump Truck ◽  
Brake Disc ◽  
Disc Brakes ◽  
Test Requirements ◽  
Mining Dump Truck ◽  
The Finite Element Model

Analyzing thermal load of friction pair of the disc brakes was not only an indispensable part but also a key theoretical basis for choosing materials of friction pair. In this paper, a brake disc of a mining dump truck with 220t loads was researched. In accordance with the brake test requirements of ISO3450-1996 standard, the finite element model was built using ANSYS software and then the transient simulation analysis of the temperature field for the brake disc was conducted. Finally the temperature distribution and its variation of the brake disc were analyzed in detail based on the simulation results.

RELATIVE CASING MOTION EFFECT ON SQUEALER TIP COOLING PERFORMANCE AT TIGHT TIP CLEARANCE

2020 ◽  
pp. 1-18
Author(s):  
Diwei Zhu ◽  
Qiang Zhang ◽  
Shaopeng Lu ◽  
Jinfang Teng
Keyword(s):  
Thermal Load ◽  
Tip Clearance ◽  
Cooling Efficiency ◽  
Suction Surface ◽  
Cooling Performance ◽  
High Thermal Load ◽  
Blade Tip ◽  
Motion Effect ◽  
Cfd Method ◽  
The Impact

Abstract The effect of relative motion between the casing and turbine blade tip has been recognized as an important factor for tip aerothermal performance evaluation. Tight tip clearance is becoming one of the main objectives of engine manufacturers. This paper provides some insights on the topic that the impact of casing motion on the blade tip thermal performance could be different between nominal and tight tip clearances. A typical squealer tip geometry was employed, with coolant holes on the cavity floor near the pressure side rim. Three tip clearances, 1.1%, 0.6% and 0.2% of the span, are compared. The CFD method was validated against experimental data in the previous study. The results suggest that, in the tight tip situation, the effect of casing motion on cooling efficiency and flow structure is distinguished from the larger clearance situations. The scraping effect drives the leakage flow towards the blade suction surface, inducing high thermal load at tight clearance. The findings in this study highlight the importance of relative casing motion, especially at tight clearance.

Thermal load analysis of cylindrically bent insulating glass units

2014 ◽  
pp. 123-132
Author(s):  
N Penkova ◽  
V Iliev ◽  
L Zashcova ◽  
J Neugebauer
Keyword(s):  
Thermal Load ◽  
Load Analysis
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