Graduate Design of Wuhan

University of Technology

Design and static mechanics analysis of the body frame of kindergarten school bus

College (Department)： School of International Education

Professional class： Vehicle gj1601

Student name： Zhang Haonan

Instructor： Deng Xiaohe

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Abstract

With the development of economic globalization, people's demands on living standards are getting higher and higher. Pre-school education is developing rapidly, at the same time, in response to the national policy of promoting school dropouts and the consolidation of schools, the transport market for kindergartens and primary and secondary school students to and from school is gradually expanding, and the number of special school buses is increasing. With the rapid development of school bus as an emerging field, the improvement of design and manufacturing technology is of great significance to improve the safety and comfort of the whole vehicle. In the process of school bus manufacturing, the overall layout of the car is an important link, the overall layout of the body is the key. In the process of school bus design and development, the overall layout of the body plays an important role in the safety and comfort of the school bus. The guiding ideology of the overall layout of the school bus body is "people-oriented" and "safety first" design concept. Under the guidance of system engineering, the development of school bus takes full account of the safety elements of the interaction between automobile, human and environment. This paper for a large-scale special school bus layout design, the whole paper includes four parts: First, the overall design of the school bus to determine and design instructions, including the school bus design, parameters and body size and other aspects of the description, drawing the school bus total layout map. Second, the school bus frame is designed, including three-dimensional modeling of the body frame. Third, the rationality and reliability of the body design of this special school bus are verified by the prototype analysis. The study and analysis of the overall layout of the school bus body and frame design provide sedation basis for subsequent design research and development, and at the same time use three-dimensional data modeling and finite element analysis methods in the research process to provide reference for the modern design of passenger cars.

Keywords: total layout design, frame design, 3D modeling, finite element analysis.

Catalog

Chapter one introduction 1

1.1 Background and significance of the subject 1

1.1.1 research background 1

1.1.2 research meaning 2

1.2 Overview of kindergarten school buses and the current situation at home and abroad 3

1.2.1 Kindergarten School Bus Overview 3

1.2.2 Research status at home and abord 4

1.3 The main content of this paper 5

Chapter two Overview and structural design of kindergarten school bus 7

2.1 Overview of the general layout of kindergarten school buses 7

2.2 Kindergarten school bus layout design 8

2.3 Overview of kindergarten school bus frame 13

2.4 Design of kindergarten school bus frame structure 14

2.5 Stiffness strength estimation and verification of the frame 21

Chapter three Analysis of finite elements of kindergarten school bus frame 23

3.1 The establishment of the finite element analysis model of kindergarten school bus 23

3.2 Analysis and analysis of finite elements of kindergarten school bus frame 24

3.2.1 Analysis of finite elements of horizontal bending conditions 24

3.2.2 Analysis of finite elements of extreme torsional conditions 26

3.2.3 Analysis of finite element analysis of emergency braking conditions 27

3.2.4 Analysis of finite element analysis of emergency turning conditions 29

3.3 The summary of this chapter 31

3.4 The late optimization 31

Chapter four conclusion 32

Reference 33

Acknowledgements 37

Chapter one Introduction

1.1 Background and design significance of the subject

1.1.1 Research background

（1）Rapid growth. With the improvement of China's economic level, people's living standards are also improving. In both urban and rural areas, the establishment of kindergartens is becoming more and more popular. In order to open up the market and attract more young children to school, more and more kindergartens are opening, and these new kindergartens tend to pay more attention to the construction.

Figure 1.1 Number of kindergartens in China