Some Factors Influencing Friction Brake Performance: Part 2—A Mathematical Model of the Brake Shoe and the Brake Path System

1989 ◽  
Vol 111 (1) ◽  
pp. 8-12 ◽  
Author(s):  
Z. Barecki ◽  
S. F. Scieszka
Keyword(s):  
Mathematical Model ◽  
Brake Shoe ◽  
Factors Influencing ◽  
Path System ◽  
Brake Performance ◽  
Friction Brake

Some Factors Influencing Friction Brake Performance: Part 1—Investigation of Full-scale Brake Systems

1989 ◽  
Vol 111 (1) ◽  
pp. 2-7
Author(s):  
Z. Barecki ◽  
S. F. Scieszka
Keyword(s):  
Pressure Distribution ◽  
Elastic Deformation ◽  
Full Scale ◽  
Factors Influencing ◽  
Braking Torque ◽  
Brake Performance ◽  
Friction Brake ◽  
Friction Lining

In this paper the effect on braking torque of the geometry of contact between brake shoes and drums is presented. It is shown that elastic deformation as well as errors in dimensional and assembly errors substantially affect the value of the braking torque. Investigations of pressure distribution on friction lining, brake factor, brake element deformation, and wear of linings carried out on mine winder installations are presented.

Some Factors Influencing Friction Brake Performance: Part 3—Computer Simulation of the Lining Wear Process in Friction Brakes

1989 ◽  
Vol 111 (1) ◽  
pp. 13-18
Author(s):  
Z. Barecki ◽  
S. F. Scieszka
Keyword(s):  
Computer Simulation ◽  
Mechanical Characteristics ◽  
Friction Materials ◽  
Wear Process ◽  
Factors Influencing ◽  
Modelling Procedure ◽  
Brake Performance ◽  
Friction Brake ◽  
Friction Lining ◽  
Simulative Model

In this paper the simulative model of the friction lining wear process in a winding gear, post type, brake is presented. In the modelling procedure, the wear characteristics of the friction materials and the brake variables typical for winding brakes, for example, the elastic property of the brake elements were taken into consideration. The modelling of the friction lining wear process was used to predict associated changes in the pressure distribution, and other mechanical characteristics of the brake system.

scholarly journals Analysis and Simulation about a Simplified Model for Modulation and Demodulation of Ship-borne Single Channel Monopulse Radar

2018 ◽  
Vol 232 ◽  
pp. 04043
Author(s):  
Xudong Zhang ◽  
Haiyu Ji
Keyword(s):  
Mathematical Model ◽  
Single Channel ◽  
Simplified Model ◽  
Modulation And Demodulation ◽  
Pulse Radar ◽  
Factors Influencing ◽  
Simplified Mathematical Model

A simplified mathematical model for modulation and demodulation of a single channel monopulse (SCM) system is proposed, which is based on a ship-borne pulse radar S-band guided receiver. Using the proposed mathematical model, the modulation and demodulation of single-channel and multi-channel signals were simulated respectively, and the factors influencing the modulation and demodulation of the SCM system were analysed.

Research on Power and Brake Detection Integration of Wheeled Construction Machinery

2014 ◽  
Vol 945-949 ◽  
pp. 2126-2131
Author(s):  
Cong Cong Gong ◽  
Ming Lu ◽  
Hai Feng Ling ◽  
Bo Li
Keyword(s):  
Mathematical Model ◽  
Performance Test ◽  
New Method ◽  
Test Equipment ◽  
Treatment Efficiency ◽  
Large Area ◽  
Construction Machinery ◽  
Test Platform ◽  
Brake Performance ◽  
The Mathematical Model

The power and brake performance of wheeled construction machinery are separately detected on different test equipment in present chassis detection line. A new method is put forward in the veiw of high cost, large area occupied and low treatment efficiency of the traditional line. A DC dynamometer is provided as the power absorbing device and the reverse drag device to combine the two separate platforms in the proposed method, and the mathematical model of DC dynamometer is built based on the principle of chassis performance test. The parameter of dynamometer is determined by calculating, and power and brake detection integration of the wheeled construction machinery is achieved on the integrated test platform.

scholarly journals Wear issues of pumping units

2021 ◽  
Vol 264 ◽  
pp. 04081
Author(s):  
Oybek Ishnazarov ◽  
Abdusaid Isakov ◽  
Utkir Islomov ◽  
Umirzoq Xoliyorov ◽  
Dilshod Ochilov
Keyword(s):  
Mathematical Model ◽  
Wear Resistance ◽  
Service Life ◽  
Rotation Speed ◽  
Operating Mode ◽  
Factors Influencing ◽  
Pump Shaft ◽  
Pumping Unit ◽  
Pumping Units ◽  
The Mathematical Model

The article presents the possibility of increasing the service life of pumping units. Particular attention is paid to the regulation of the speed of rotation of the pumping unit. There are some assumptions in the mathematical model that do not affect the final result. The factors influencing the operating mode are given. It is indicated that the speed of rotation of the pump shaft significantly affects the wear resistance of the pump blades. Thus, the regulation of the pump rotation speed will rationally increase its service life.

scholarly journals A MATHEMATICAL MODEL OF TRAIN CONTINUOUS MOTION UPHILL

Transport ◽  
2008 ◽  
Vol 23 (2) ◽  
pp. 135-137 ◽  
Author(s):  
Gintautas Bureika
Keyword(s):  
Mathematical Model ◽  
Carrying Capacity ◽  
Total Resistance ◽  
Tractive Force ◽  
Distribution Law ◽  
Adhesion Coefficient ◽  
Research Results ◽  
Railway Line ◽  
Factors Influencing ◽  
The Relationship

The determination problem of adhesion coefficient of locomotives’ wheels with rails is described in this paper. The use of methods of mathematical statistics and theory of probability provides wider possibilities for determining the most acceptable (suitable) value of the adhesion coefficient. The random factors influencing on this value are analysed. The use of the adhesion coefficient values based on reliable research results could help maintain uninterrupted (continuous) traffic of heavy freight trains and increase not only the carrying capacity, but also the volume of the transported goods. The paper considers a mathematical model of steady traffic of heavy freight trains pulled by upgraded locomotives of the series 2M62M on railway line with a gradient. The research results show that the actual values of the adhesion coefficient and the total resistance are distributed according to the normal distribution law. A mode of locomotive motion largely depends on the relationship between the total train's running resistance and locomotive tractive force. Finally, basic conclusions are given.

A Mathematical Model for Heat Transfer in Combustion Chambers of Steam Generators

1981 ◽  
Vol 103 (3) ◽  
pp. 545-551
Author(s):  
M. G. Gulicˇ ◽  
D. D. Gvozdenac
Keyword(s):  
Heat Transfer ◽  
Mathematical Model ◽  
Energy Balance ◽  
Combustion Chamber ◽  
Combustion Zone ◽  
Combustion Chambers ◽  
Steam Generators ◽  
Total Heat Transfer ◽  
Hewlett Packard ◽  
Factors Influencing

This paper describes a mathematical model for determining the total heat transfer in combustion chambers of steam generators. The model is based on the energy balance of radiation in a spherical combustion chamber which is divided into a combustion zone and gaseous zone. The model was tested on a Hewlett-Packard Type 9815 A computer with 2008 program memories. Calculations were made for a number of steam generator combustion chambers of different furnace loads for which all important factors were established. The model allows a didactic analysis of factors influencing the process of combustion and heat transfer.

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