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任 務(wù) 書
1．畢業(yè)設(shè)計的背景：
汽車產(chǎn)業(yè)是國民經(jīng)濟(jì)的重要支柱產(chǎn)業(yè)，在國民經(jīng)濟(jì)和社會發(fā)展中發(fā)揮著重要作用。新能源汽車產(chǎn)業(yè)是戰(zhàn)略性新興產(chǎn)業(yè)，發(fā)展節(jié)能汽車是推動節(jié)能減排的有效舉措。目前能源和環(huán)境問題日益嚴(yán)重，社會輿論壓力空前，大力發(fā)展節(jié)能與新能源汽車是解決能源環(huán)境問題的有效途徑，同時也是實現(xiàn)國家生態(tài)文明建設(shè)的有力舉措。由于現(xiàn)代汽車越來越追求舒適性，安全性。所以新能源汽車車身的設(shè)計工作越來越重要。側(cè)圍作為車身的重要組成部分，具有較大的研究意義。本課題根據(jù)側(cè)圍的結(jié)構(gòu)特點，結(jié)合人機工程學(xué)，及碰撞安全性，及車身四大工藝。著重側(cè)圍總成的設(shè)計流程，及建模方法。
2．畢業(yè)設(shè)計(論文)的內(nèi)容和要求：
制定側(cè)圍設(shè)計方案，設(shè)計相關(guān)斷面。根據(jù)斷面進(jìn)行三維建模。完成裝配圖以及零件圖
課題工作量要求：
1、設(shè)計出新能源汽車側(cè)圍的裝配圖及全部零件圖；
2、編排全部零件的制造工藝一份；
3、設(shè)計說明書一份（字?jǐn)?shù)不少于15000字）；
4、翻譯不少于4000單詞量的相關(guān)英語文獻(xiàn)；
5、參考文獻(xiàn)不少于10篇。
3．主要參考文獻(xiàn)：
1.王芳. 電動汽車動力電池系統(tǒng)設(shè)計與制造技術(shù) [M]. 科學(xué)出版社, 北京, 2017.
2.黃金陵.汽車車身設(shè)計 [M]. 機械工業(yè)出版社, 北京, 2007.
3.何耀華.汽車制造工藝（第2版）[M].機械工業(yè)出版社，北京，2012.
4.任金東.汽車人機工程學(xué) [M]. 北京大學(xué)出版社, 北京, 2010.
5.曹渡. 汽車內(nèi)外飾設(shè)計與實戰(zhàn) [M]．機械工業(yè)出版社, 北京, 2011.
6.劉晶郁 李曉霞. 汽車安全與法規(guī)[M]．人民交通出版社, 北京, 2005.
7.張緩緩、楊國平. 汽車設(shè)計[M]. 清華大學(xué)出版社, 北京，2016.
8.泛亞內(nèi)飾教材編寫組.汽車內(nèi)飾設(shè)計概論(第2版)[M].人民交通出版社, 北京, 2012.
9.陳浩,王巖松. 汽車專業(yè)英語[M].清華大學(xué)出版社, 北京, 2013.
10.胡驊 宋慧. 電動汽車（第2版）[M].人民交通出版社,北京,2006.
4．畢業(yè)設(shè)計(論文)進(jìn)度計劃(以周為單位)：
第1周 查詢相關(guān)文獻(xiàn)，收集資料；
第2周 查詢相關(guān)文獻(xiàn)，收集資料，翻譯相關(guān)英語文獻(xiàn)；
第3周 綜合分析文獻(xiàn)資料，提出制定新能源汽車設(shè)計方案；
第4周 提出側(cè)圍總成結(jié)構(gòu)方案；
第5周 確定側(cè)圍總體結(jié)構(gòu),計算主要零部件尺寸；
第6周 側(cè)圍總成附件布置；
第7周 側(cè)圍總成主斷面設(shè)計；
第8周 根據(jù)主斷面設(shè)計三維零件；
第9周 根據(jù)主斷面設(shè)計三維零件；
第10周 對側(cè)圍的工藝進(jìn)行分析；
第11周 編排指定的側(cè)圍主要零件的制造工藝；
第12周 完善總體結(jié)構(gòu)，整理圖紙資料和畢業(yè)論文；
第13周 整理圖紙資料和畢業(yè)論文，準(zhǔn)備答辯。
教研室審查意見：
室主任簽名： 年 月 日
學(xué)院審查意見：
教學(xué)院長簽名： 年 月 日
翻譯部分
英文原文
Development of side design for new energy vehicles in China
Abstract
The interior and exterior decoration of the car is a new domestic industry in recent years, mainly for the decoration of automobile and the use of automobile ornaments. It includes the interior decoration of the roof of the car, the decoration of the side and door , the decoration of the dashboard, the decoration of the seat, the decoration of the floor and the decoration of the interior decoration. But the mainstream trend is mainly comfortable and beautiful, so as to improve the aesthetics and practicability of the interior room and comfort.
The main content of this paper is about the design of the new energy vehicle side circumference. According to the data, the structure characteristics of automobile side girth are understood and grasped, the craft analysis of automobil e side circumference is carried out, and the design and research of its concave and convex die are carried out. The overall scheme of automobile side circumference is designed to understand the structure of the side section. Three-dimensional modeling is carried out according to its cross-section structure. Complete assembly drawings. This paper is not only a good experience for my university four years, but also a foundation for future study and work.
Key words: new energy vehicle; vehicle side circumference; decorative panel; design; modeling
1.Introduction
With the growth of the global economy, the current international demand for the automobile industry has reached more than 1 million per year. This is only the demand for small bridge cars, with a total vehicle production of more than 1.5 million vehicles. At present, the market is dominated by cars. At present, all automotive companies produce heavy, medium and light models, including cars, trucks and SUVs as the leading industry. Of course, most of the cars are already the mainstream now. Cars need a very high technological level for their own manufacture, and the demand is also very large. Precisely because of the huge demand, So what he represents is the overall level of industrial development in a country; as a personal step. Tools, the future market of the automobile industry is also quite huge. With the improvement of the daily average level of people, the automobile market is developing in an irresistible way, compared with those in the mature period of the international automobile industry. Car as the mainstream has become an inevitable choice, side as an important part of the external decoration, integrated the car door frame and other important accessories. It has great significance in research. According to the structural characteristics of side girth, combined with ergonomics and collision safety, the design and modeling of vehicle side girth are emphasized.
The body of the body is mostly side wall. The side enclosure is the base of the side. The side plate is in the decisive role in the whole body development process, limiting and affecting the welding sequence and welding connection in the body manufacturing process. The design time is more than half of the whole body design process, in the process of designing the product and manufacturing process of the mould. It also occupies a large proportion. The development of the whole body design will be affected by the development process of the side and external parts. This requires that we carefully consider and study the layout of the side plates and the layout of the components that match the side pa nels at the beginning of the design and development. Do not change the side circumference of the component design. According to the A aspect of the vehicle, consider the requirements of the process and demonstrate the production of the model. Side panels are designed on the basis of side panels and typical profile lines. And the welding relationship of the whole body should be considered and the welding sequence should be set to ensure the overall strength of the side girth. If the larger surface is modified, the layout of the device in the design room wil l need to be redesigned. After all, car side design is an important component of body design.
The role of the body side circumference assembly is: A. Commuters and drivers are able to enter and leave the cab normally. Sealing, waterproof, dustproof, sound insulation, etc. Connect the floor, front, top, and back girth to form an inner and outer body. Install and bear forces from various functions and ornaments (such as seatbelt pull, door handle pull, etc.). Bear all kinds of torsion from the whole vehicle and the collision force to protect the safety of passengers.
The side girth assembly is usually welded by the side outer plate, the side ring inner plate, the side girth strengthening plate and so on, thus the construction becomes a whole, which impel the body to form a closed structure and improve theoveral strengthof the body. In order to effectively protect the safety of passengers and drivers.
Ergoomics is a very important problem in the process of bod y design. This requires that we must have a certain understanding of the side circumference. If divided from the functional aspect, the side-by-side system can be divided into three categories: basic body, functional parts , decorative parts. For the design of the side-girth system, its base piece is the side-girth. However, the basic side of the function is the following two: support protection and is installed.
The side plate is often regarded as the skeleton of the car and the vibration and load between other parts of the body. In addition, it is also an indispensable part of other body components connected.
From the point of view of protecting passengers, I think the traditional side walk can be considered as a three-dimensional topology. It should be able to use the deformation of its own materials in a series of traffic accidents, such as vehicle collisions, overturning or other equipment, to reduce impact and reduce energy transmission. In the frontal collision of vehicles, the cockpit can absorb the impact through the deformation of the side wall in the collision accident, reduce the degree of deformation of the cockpit, and ensure the survival space of the passengers. In side impact and rollover accidents, the side plate needs to provide a very small volume of deformation to reduce the impact energy and facilitate the flight of the crew.
Through the research and development of the body side body system, the design method of the body side circumference is understood step by step. By optimizing the body design and studying the development of portable body, this paper provides a reference for the development of environmental protection and energy saving vehicles in the future. This paper tries to catch up with the design ideas and methods of the traditional automobile giant countries, accumulate the experience of the future development of the automobile body in China, and produce high performance vehicles suitable for all the people through the combination of ergonomics.
2. The content and implementation method of the thesis
The essence of the rapid development and modification of the side girth is to automatically update the side-by-side model according to the original default design standards and geometric constraints when the overall design parameters or the side design parameters are changed. And change the geometric physical quantity which needs to be changed in the lateral model. It can not only guarantee the initial cause of the side wall design, but also guarantee the integrity of the side wall. It also helps designers avoid boredom and helps them save time, improve productivity, reduce work intensity, and give them more time to try and consider more options. There is considerable time to find the best design from the solution. Through product design By modifying the dimension geometry simply, the streamlined design data model can be used to evaluate the optimal design scheme. You can uickly refer to and then come up with more design options for use.
The main research directions and ideas of this thesis include:
1. study the fast and simple development steps of the side fence, and construct the theoretical model based on this idea.
2. By synthesizing the opinions of the experts, the data model and the processing method of each model unit are improved.
3. This paper studies the concrete application of digital and analog engineering in the rapid development of side enclosure, and puts forward their realization methods.
4. Explore the typical parts of the body's side circumference and create a typical partial database.
5. Carry on the system development and method verification of the car body side-girth rapid development system.
6. Design dimension of side shell and related software design work.
3. Historical retrospect and Development Direction of the side girth Design of New Energy vehicles
China's auto industry returned to steady growth in 2017 after a decade of rapid growth. In terms of long-term economic development, the impact of market consumer demand guided by national policies is relatively short-lived. After all, the rapid development of the automobile industry in recent years has contributed more to the growth of GDP in our country and has a huge impact on the economy. Although the introduction of local purchase restrictions has had some impact on auto sales as a whole, the growth of the economy has not stopped the continued growth of the auto industry.
First of all, as people's incomes continue to increase, China's per capita consumption level continues to rise, there will be no sharp increase or decrease. Most of China still offers huge growth space for auto sales, with sales reaching 28.8789 million vehicles by 2017, an increase of 3.04 from a year earlier, according to statistics. Beijing, Shanghai, Guangzhou, Shenzhen, Chongqing and other 46 first-tier cities and some of the second-tier cities as many as 60 million cars. These cities account for 1/3 of the country's total car sales, and there is still plenty of room in the second-and-third-tier cities.
Second, the advent of new energy vehicles has developed and vigorously promoted the developmen t of the automobile market. In order to meet the trend of the times, all the major automobile countries have made relevant positive policies . In China, the new energy vehicle market is positively influenced by the policies. As a result, it has made remarkable sales achievements, and at the same time, a big economic country such as the United States has also adopted policies that are quite different from ours. The United States has increased the promotion of new energy vehicles by making great efforts to improve its infrastructure. Better integration of new energy vehicles into the U.S. market will enable the American people to accept the integration of new energy vehicles.
With the development of economic integration and the deepening of industrial division, the automobile industry of China, Brazil and the non-densely populated emerging countries is developing more rapidly. As a result, the global auto market position is rising every day. Of course, India, Russia and other countries have also developed rapidly in recent years. Of course, all this cannot be separated from the emerging automobile market and become a new force in the global automobile industry. To enable international auto giants and local auto companies to join the capacity of emerging auto markets.
Second, the U.S., Japan, Germany and France, the old car power before the production has been significantly affected by the economic crisis. But overall levels remained relatively stable, with global car production returning to 2007 levels in 2010. Meanwhile, according to the China Association of Automobile Manufacturers, total auto production and sales in China increased rapidly in 2016, reaching a record high. Compared with the same period in 2015, the growth rate was 14.76 percent and 13.7percent respectively, up from 11.5 percent and 9.0 percent respectively in the same period last year.
The global auto market is expected to continue to grow steadily in the coming years as demand from emerging market countries continues to grow, according to the 2017 forecast for global auto consumption by the Chinese auto industry. Global car sales are expected to rise to 113.59 million in four years by 2022.
4.Conclusion
At present, the research on the rapid design method of automobile body side girth is an important goal of modern body sid e design. The development of 3D modeling accelerates the design of aut omobile side circumference to a greater extent and improves the design efficiency. The design solution is optimized, so CAD will become the direction of automob ile design in the future. In the process of graduation design, people feel tha t catia s oftware is very effective in improving design efficiency, design software is universal, not only in terms of car design, but it is necessary to build a modeling data mo del. More able to meet the needs of automotive design, improve automotive design In terms of parameterization, the quality of the side parts can be completed by modifying s ome dimension parameters. In terms of the advantages of parameterization in computer aided design (CAD), Changing the side design from empirical design to data design, reducing the workload of design engineers, reducing the time of modeling task design, and applying more time to the innovation of body side structure. Improve the ability of independent technological innovation in China's automobile manufacturing industry.
This paper makes a detailed analysis on the concept and structure optimization of the side wall design , but it is not enough in the analysis of the data model and the three - dimensional model . It is hope d that the correspondin g deficiency can be found in the future work study , and the problem can be solved step by step .
Car side design is a very complex project, in the design process of this paper, the application of theoretical knowledge is not well demonstrated, I hope that in the future work I can find relevant problems and gradually change. These are the ideas and feelings I got during the design of the sidewalk, as well as the overall design process and direction of thinking. However, as far as my personal ability is concerned, my understanding of some places is not enough, and there are still some missing points. I hope you can correct me in time, I will continue to improve in the future.
5.References
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[2] Fang Huasong. Simulation and springback Analysis of Automobile B column forming [D]. Harbin: mechanical Manufacturing and Automation of College of Mechanical and Electrical Engineering, Harbin University of Technology 2007.
[3] Xing Zhongwen et al. Simulation and analysis of automobile B column forming [J]. Forging Technology: 2008 / 28 / 2: 27-30.
[4] Liu Kesu et al. Simulation Analysis and Optimization of formability of B-column reinforced Plate [J]. Automotive Technology 2009 / 6 / 1: 59-61.
[5] Fang Wenning, he Gan Lin. Simulation analysis of forming wrinkle of a B column part of automobile [J]. VW Science & Technology! 2011! 12! 11! 136-138.
[6] Zhu Zheng. Development, application and prospect of high strength steel plate for automobile [J]. Iron & Steel Co., Ltd.! 35! 11! 66-70! 14.
[7] talk about the right light. A brief talk on the New Technology of Hot stamping of Steel Plate [J]. Science and Technology Information: 31: 72105.
[8] Xing Zhongwen, Fang Huasong. Simulation and Analysis of Automobile column forming [J]. Die making / Mould Manufacturing
[9] Gao Yunkai et al. Hot forming Technology of High strength Steel for Automobile [J]. Car Technology 2010 8: 5-6.
[10] Wang Liying. Study on Hot stamping forming Technology of Ultra High strength Steel Plate [J]. College of Mechanical Engineering, Tongji University.
[11] Tan Zhiyao. Basic Research on Hot stamping forming of Ultra High strength Steel Plate [D]. Shanghai: Tongji University degree thesis 2006:
[12] Zhu Chao. Design and optimization of hot stamping die for ultra high strength steel [D]. Changchun: Jilin University dissertation, 2010:1.
[13] Liu Wen. Numerical simulation of hot forming cooling process of ultra high strength steel [J]. Hot working process: 2012: 2-4.
[14] Ma Ning. Some Research on Hot forming Technology of strength Steel Plate [D]. Dalian University of Technology 2011: 15-17.
[15] numerical analysis of hot stamping for Zhang Zhiqiang. B column [J]. Forging Technology: 2010 / 35 / 3: 57-60.
中國新能源汽車側(cè)圍設(shè)計的發(fā)展
文摘
汽車內(nèi)外部裝飾是近年來的國內(nèi)新興產(chǎn)業(yè)，主要針對汽車的裝飾及汽車裝飾品的使用。它包含了汽車頂棚內(nèi)襯裝飾、側(cè)圍和門的裝飾、儀表板的裝飾、座椅的裝飾、地板的裝飾以及內(nèi)飾精品的裝飾。國內(nèi)外對于汽車的裝飾各有不同，他們關(guān)注的又是截然不同的，但是主流的趨勢還是以舒適，美觀為主，以提高汽車內(nèi)室的美觀性和實用性、舒適性為目的。
本文所介紹的主要內(nèi)容是關(guān)于新能源汽車側(cè)圍的設(shè)計。根據(jù)資料查閱了解和掌握汽車側(cè)圍的結(jié)構(gòu)特點，對汽車側(cè)圍進(jìn)行工藝性分析，對其凹凸模進(jìn)行設(shè)計與研究。設(shè)計出汽車側(cè)圍總的方案，了解側(cè)圍斷面的結(jié)構(gòu)。根據(jù)其斷面結(jié)構(gòu)進(jìn)行三維建模。完成裝配零件圖。本文對于我大學(xué)四年不僅是一次很好地歷練，還為今后的學(xué)習(xí)和工作打下基礎(chǔ)。
關(guān)鍵詞 新能源汽車；汽車側(cè)圍；裝飾板；設(shè)計；建模
1.論文研究的目的和意義
隨著全球經(jīng)濟(jì)的增長，就目前國際對汽車行業(yè)的需求量達(dá)到年產(chǎn)100萬以上，這僅僅是對于小橋車的需求，汽車總產(chǎn)已超150萬輛，當(dāng)前市場主要是以小轎車為主導(dǎo)，目前所有汽車公司都以生產(chǎn)重型，中型和輕型車型，包括轎車，卡車和越野車為主導(dǎo)產(chǎn)業(yè)。當(dāng)然現(xiàn)在大多是已轎車為主流了，轎車對于本身的制造而言需要相當(dāng)高的工藝水平，并且需求量也是很大的，正因為需求量的巨大，因此他所代表的是一國工業(yè)發(fā)展的總體水平；作為個人的代步工具，汽車行業(yè)的未來市場因此也是相當(dāng)巨大的，隨著人們?nèi)站降奶岣?，汽車市場正以一種不可阻擋之勢在發(fā)展，相對于那些處在成熟期的國際汽車行業(yè)來說，以小轎車為主流的已經(jīng)成為了一種必然選擇，側(cè)圍作為外飾的重要組成部分，集成了汽車門框等重要附件。具有較大的研究意義。本課題根據(jù)側(cè)圍的結(jié)構(gòu)特點，結(jié)合人機工程學(xué)，及碰撞安全性，對汽車側(cè)圍進(jìn)行了著重設(shè)計與建模。
車身大都是側(cè)壁組成。側(cè)圍外板是側(cè)圍的基準(zhǔn)，側(cè)板在整個車身開發(fā)過程中處于決定作用，限制和影響著車身制造過程中的焊接順序和焊接連接。它的設(shè)計時間占整個車身設(shè)計流程的一半以上，在設(shè)計加工模具的產(chǎn)品和制造工藝的過程中，它也占據(jù)了很大的比例，整個車身設(shè)計的開發(fā)將受到側(cè)壁和外部零件的開發(fā)進(jìn)程影響。這就要求我們在開始設(shè)計和開發(fā)時認(rèn)真考慮和研究側(cè)板的布局和與側(cè)板匹配的部件的布置。由于組件布局中的缺陷，相對組件布局的改進(jìn)，請勿更改側(cè)圍的組件設(shè)計。根據(jù)車輛的A方面，考慮過程的要求并演示模型的生產(chǎn)。側(cè)面板的設(shè)計基礎(chǔ)是側(cè)面板和典型剖面線。并且要考慮整個車身的焊接關(guān)系，焊接順序的設(shè)置也為了確保側(cè)圍的整體強度要求打下基礎(chǔ)。如果修改較大的表面，則需要重新設(shè)計室內(nèi)裝置的布局。畢竟汽車的側(cè)圍設(shè)計是車身設(shè)計的重要構(gòu)成單元。
車身側(cè)圍總成的作用：a.乘車員及駕車員能夠正常進(jìn)出于駕駛室內(nèi)；b.密封、防水、防塵、隔音等；c.連接地板、前圍、頂蓋、后圍使車體形成有內(nèi)外之分的整體；d.為各種功能及裝飾件實現(xiàn)安裝和承受來自這些件的作用力（如：安全帶拉力，開門拉手拉力等）；e.承受來自于整車的各種扭力及碰撞時保護(hù)乘車人員安全的碰撞力。
側(cè)圍總成一般是由側(cè)圍外板、側(cè)圍內(nèi)板、側(cè)圍加強板等分總成依次焊接而成，從而構(gòu)建成為了一個整體，促使車身形成封閉結(jié)構(gòu)，提高車身的整體的強度。從而有效的保護(hù)了乘車人員和駕車人員的安全。
人體工程學(xué)是車身設(shè)計過程中的一個非常重要的問題。這就要求我們必須對側(cè)圍有一定的了解。如果從功能方面劃分，并排系統(tǒng)可以分為三大類：基礎(chǔ)本體，功能件，裝飾件。對于側(cè)圍系統(tǒng)設(shè)計，它的基礎(chǔ)件就是側(cè)圍。然而側(cè)圍的基本功能就以下兩種:支撐保護(hù)和是安裝。
側(cè)板常常被人們認(rèn)為是汽車的骨架，是其他車身部件之間相互的振動和載荷。此外，它還是其他車身組件連接的不可少部件。
僅從保護(hù)乘車人員的角度來看，我認(rèn)為傳統(tǒng)的側(cè)圍可以被認(rèn)為是一種三維拓?fù)浣Y(jié)構(gòu)。它應(yīng)該能夠在一系列交通事故中使用其自身材料的變形，例如車輛碰撞，翻車或其他設(shè)備，以減少沖擊并減少能量傳輸。在車輛的正面碰撞事故中，駕駛艙可以通過碰撞事故中側(cè)壁的變形來吸收沖擊，減少駕駛艙的變形程度，保證乘客所需的生存空間。在側(cè)面碰撞和側(cè)翻事故中，側(cè)板需要提供變形的體積非常小，來減小沖擊能量，方便乘員逃跑。
通過對車身側(cè)體的系統(tǒng)研發(fā)，逐步了解了車身側(cè)圍的設(shè)計方法。通過優(yōu)化車身設(shè)計，研究輕便車身的開發(fā)，為未來環(huán)保節(jié)能車輛的發(fā)展提供參考。力求趕上傳統(tǒng)汽車巨頭國家的設(shè)計理念和方法，積累未來中國汽車車身發(fā)展的經(jīng)驗，通過人體工程學(xué)的組合，生產(chǎn)出適合一切人群的高性能車輛。
2.論文研究的內(nèi)容和實現(xiàn)方法
側(cè)圍的快速開發(fā)和快速修改的本質(zhì)是當(dāng)總體設(shè)計參數(shù)或者側(cè)圍設(shè)計參數(shù)發(fā)生改變后，根據(jù)原始預(yù)設(shè)的設(shè)計標(biāo)準(zhǔn)和幾何約束關(guān)系自動更新并排模型，并改變側(cè)置模型需要改變的幾何物理量。它不僅可以保證側(cè)墻設(shè)計的初始緣由，而且也會保證側(cè)圍的完整性。同樣這可以讓設(shè)計人員免于無聊，并且能夠幫助他們節(jié)省時間，提高效率，減少工作強度，讓他們有更多的時間去嘗試和考慮更多的選擇。有相當(dāng)多的時間從解決方案中找到最佳設(shè)計。通過在產(chǎn)品設(shè)計階段簡單修改尺寸幾何，可以實現(xiàn)使用流線型設(shè)計數(shù)據(jù)模型來評估最優(yōu)設(shè)計方案?？梢钥焖賲⒖疾亩氤龈嘣O(shè)計選項的用途。
本論文的主要研究方向和思路包括：
1.研究側(cè)圍快速簡單的開發(fā)步驟，并基于此思路構(gòu)造設(shè)計的理論模型。
2.綜合專家們的意見，對側(cè)圍快速簡單設(shè)計的數(shù)據(jù)模型和各模型單元處理方式進(jìn)行改善。
3.研究數(shù)模工程在側(cè)圍快速開發(fā)中的具體應(yīng)用，并且提出它們的實現(xiàn)方式。
4.探索車身側(cè)圍的典型部分，并創(chuàng)建一個典型的部分?jǐn)?shù)據(jù)庫。
5.進(jìn)行車身側(cè)圍快速開發(fā)系統(tǒng)的系統(tǒng)開發(fā)和方法驗證。
6.車身側(cè)面外殼設(shè)計尺寸及相關(guān)軟件設(shè)計工作。
3.新能源汽車側(cè)圍設(shè)計的歷史回顧和發(fā)展方向
2017年，中國汽車行業(yè)在過去十年迅速發(fā)展之后，恢復(fù)了穩(wěn)定增長。就中長期經(jīng)濟(jì)發(fā)展來看，以國家政策為導(dǎo)向的市場消費需求的影響還是相對短暫的，畢竟汽車行業(yè)近幾年的快速發(fā)張對我國 GDP的增長貢獻(xiàn)較高，對經(jīng)濟(jì)有巨大的拉到作用，雖然地方性限購政策的出臺導(dǎo)致對汽車行業(yè)整體售出的影響有一定的影響，不過由于人們經(jīng)濟(jì)的增長還是阻止不了汽車行業(yè)的持續(xù)增長。
首先，隨著人們收入的不斷增加，中國人均消費水平繼續(xù)上升，不會有急劇增加或減少。中國大部分地區(qū)仍然為汽車行業(yè)的銷售提供巨大的發(fā)展空間，據(jù)統(tǒng)計，截止2017年，我國汽車銷量已高達(dá)2887.89萬輛，同比增長3.04％。北京，上海，廣州，深圳，重慶等46個一線城市和部分二線城市的汽車數(shù)量高達(dá)6000萬輛。這些城市的銷量在全國汽車總擁有量的占據(jù)了三分之一的大比例，而且在二三線城市市場空間依舊還是很大的。
其次，新能源汽車的問世已發(fā)展也大力的推動了汽車市場的發(fā)展。一定程度上促進(jìn)了汽車產(chǎn)量的持續(xù)飆升，為了迎