小型电动代步车制动系统设计(含CAD零件图装配图)(英文)(任务书,开题报告,文献摘要,外文翻译,论文说明书英文8000字,CAD图5张)
Abstract
Disc brakes are the object of this design, referring to the Smart for 4 model select parameters. In the part of the design of the braking system,designing and calculating the brake system at first,and the material, structure and size of the brake system parts were selected. The checking calculation of wear, temperature and parking was carried out.After that, the parking brake is designed and checked, and then the brake drive mechanism was selected and related calculations were carried out. After that is checking the braking performance, and then the brake force distribution curve and the brake force distribution coefficient curve of the front and rear wheel brakes are plotted according to the data obtained before by using MATLAB.In addition to software analysis, the three-dimensional models and assembly of the designed parts are first designed by CATIA. After that, the static analysis, modal analysis and thermal analysis of the model was carried out by ANSYS Workbench.
Key Words：blade electric vehicles; disc brake; MATLAB; CATIA;
ANSYS Workbench
Catalog
Chapter 1 Introduction 1
1.1 Foreword 1
1.2Research status of automobile brake system 1
1.3Research results of braking system for electric vehicle 2
1.4Overview of Braking System Form 4
1.5Design content 4
Chapter 2 Automobile Parameter and Brake System Layout 5
2.1Automobile parameter 5
2.1.1Selection of vehicle basic parameter 5
2.1.1Calculation of relative parameter 5
2.2 Overall layout of braking system 6
2.3 Selection of brake 7
2.3.1Classification of brakes 7
2.3.3Selection of brake type 8
2.4 Summary 9
Chapter 3 Calculation of Brake System 10
3.1 Theoretical calculation 10
3.1.1 Braking force and braking distribution coefficient 10
3.1.2Synchronous adhesion coefficient 11
3.1.3Braking strength and utilization ratio of adhesion coefficient 11
3.1.4Maximum braking torque of brake 12
3.1.5Brake coefficient 12
3.2 Brake related calculation 13
3.2.1Selection and size of basic parts of disc brake 13
3.2.2Calculation of wear characteristics of friction linings 15
3.2.3Calculation of heat capacity and temperature rise of brake 16
3.2.4Calculation of braking torque of disc brake 17
3.3 Parking brake calculation 18
3.3.1 Parking brake type selection 18
3.3.2Slope performance check 19
3.3.3 Maximum parking braking torque check 20
3.3.3 Brake handle tension check 20
3.3.5 Brake handle Stroke check 20
3.4Correlation calculation of brake drive mechanism 20
3.4.1Selection of brake actuating mechanism 20
3.4.2Selection of brake piping system 21
3.4.3Design and calculation of hydraulic brake actuating mechanism 21
3.5 Braking performance analysis 23
3.5.1 Braking efficiency 23
3.5.2Constancy of braking efficiency 23
3.5.4Analysis of brake force distribution curve 24
3.6 Summary 25
Chapter 4 Model Establishment and Analysis 27
4.1Establishment of brake system model 27
4.2Finite element analysis of braking plate 28
4.2.1Pre-processing 28
4.2.2Static Analysis 29
4.2.3Modal analysis 30
4.3 Finite element analysis of braking caliper 32
4.3.1Pre-processing 32
4.3.2Static Analysis 33
4.4 Summary 34
Chapter 5 Conclusion and Prospect 35
5.1 Conclusion 35
5.2 Expectation 35
Reference 36
Appendix 38
Thank 39
|
