Graduation Design (Thesis) of Wuhan University of Technology

Design of the overall layout of medium - sized car body

(School): International Education College

Specialty amp; Class: Vehicle Engineering gj1303

Student name: Dai yi

Tutor: Guo huiru

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Abstract

With the vigorous development of auto industry, and ergonomics, air dynamics in automotive applications, general arrangement in the rapid development and reform. Body: the layout design experience and the principle of method is combined, is considering vehicle body and forms, the chassis layout, and transfer to body shape and some internal layout constraints on car interior ministry decorate, it is based on the function and constraints for the solution of the optimal process. A special driving space: open vision, comfortable seats arrangement of instrumentation and arrangement, compact and operating components, can give a person to fully satisfy the psychology and security. the modern automobile body is always arranging also in the rapid transformation and the development.The man-machine engineering, the aerodynamics and the modernized manufacture method development urges the unceasing renewal and the consummation which the automobile body always arranges, traditional and the innovation artistic style organic synthesis is also affecting esthetics practice which the automobile body always arranges.However, each section new vehicle being published cannot leave the automobile body always to arrange and its design tool, the automobile body total arrangement is an automobile conceptual design stage quite important project design work.

The main content of the theory is based on ergonomics in cars and practical application analysis, the layout design. Introduces the layout design tool car body model, elliptic. Puts forward comprehensive consideration of the pilot, leg vision comfortableness, manipulation of space, the steering wheel, the above factors zone method H. To improve the CATIA layout of quality, body and shorten the development cycle has very great practical significance.

Keywords: body layout design, SAE Human model, Eye ellipse,Headline envelope.

Table of contents

Chapter 1 Introduction

1.1Overview of the overall layout of the vehicle body and its significance

Since the birth of the car, after more than 100 years of development, it has become a series of traditional industries and high-tech products, and around the industrial system has become one of the world's largest enterprise groups. And as one of the three major car assembly, body design in the car design process also occupies an increasingly important part.

Body design is an important part of the car design, and the overall layout of the body is an important part of the body design. The purpose of the overall layout of the body is through the car passengers and goods arranged in the right place, which makes it possible in the limited interior space to ensure the comfort of the ride and to achieve as much as possible the quality of the load, to achieve Energy saving and emission reduction and the purpose of saving transportation costs. Due to the use of vehicles, performance requirements and the size of each assembly are different types, so the overall layout design are also different. The overall layout of the vehicle needs to be based on the overall layout of the vehicle. The size, position and size of the car, such as the size, the wheelbase, the wheelbase, the size of the water tank, the powertrain, the front and rear axles, the drive shaft and the wheel, The relative position of the partial assembly. According to the data and then refer to the relevant data of the same type of vehicle, you can initially determine the basic shape of the car, the length of the front suspension and rear suspension, front and rear window position and angle, hood height, dash panel position, seat position, The internal space control size, the steering wheel position angle and the steering mechanism and the pedal mutual position.

The purpose of the overall layout of the body design is "people-oriented." Therefore, in the overall layout of the body design, the need to take into account the driver and passengers ride comfort, driving safety, handling, visual and other requirements. As a result, SAE, ISO, GB, etc. define a series of body features related to the overall layout of the body points such as eyes, head, limb part and so on. And the distribution of the characteristics of the human body is to allow the driver to the normal driving posture to seize, to determine the human characteristics of the points, the statistical processing and get the graphics. These patterns are the tools needed to design the interior of the body, including the human body model, eye oval, outline envelope, hand extension and interface.

The overall layout of the body design related to the whole process of car design, product design can reflect the concept of design and engineering design of the overall requirements of the product design to play a guiding role. Therefore, before the overall layout of the body design, the designer should be clear vehicle control size, quality parameters, performance requirements and the type of vehicle structure; the same time, because the car is operated by the user in the internal, so the designer should also People need to be arranged, should be clear the body size parameters and the size of the human body model parameters and ergonomics set up and check, while the security system for rational design.

1.2 This design uses the drawing software introduction