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翻译部分英文原文Development of side design for new energy vehicles in ChinaAbstractThe 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; modeling1.IntroductionWith 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 thesisThe 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 bodys 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 vehiclesChinas 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 peoples incomes continue to increase, Chinas 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 countrys 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.ConclusionAt 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 Chinas 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.References1 Xing Zhongwen, Fang Huasong, Xu Weili, et al. Simulation and analysis of automobile B column forming J. Forging Technology: 2008 / 28 / 2: 27-30.2 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 Manufacturing9 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.中国新能源汽车侧围设计的发展文摘汽车内外部装饰是近年来的国内新兴产业，主要针对汽车的装饰及汽车装饰品的使用。它包含了汽车顶棚内衬装饰、侧围和门的装饰、仪表板的装饰、座椅的装饰、地板的装饰以及内饰精品的装饰。国内外对于汽车的装饰各有不同，他们关注的又是截然不同的，但是主流的趋势还是以舒适，美观为主，以提高汽车内室的美观性和实用性、舒适性为目的。本文所介绍的主要内容是关于新能源汽车侧围的设计。根据资料查阅了解和掌握汽车侧围的结构特点，对汽车侧围进行工艺性分析，对其凹凸模进行设计与研究。设计出汽车侧围总的方案，了解侧围断面的结构。根据其断面结构进行三维建模。完成装配零件图。本文对于我大学四年不仅是一次很好地历练，还为今后的学习和工作打下基础。关键词 新能源汽车；汽车侧围；装饰板；设计；建模1.论文研究的目的和意义随着全球经济的增长，就目前国际对汽车行业的需求量达到年产100万以上，这仅仅是对于小桥车的需求，汽车总产已超150万辆，当前市场主要是以小轿车为主导，目前所有汽车公司都以生产重型，中型和轻型车型，包括轿车，卡车和越野车为主导产业。当然现在大多是已轿车为主流了，轿车对于本身的制造而言需要相当高的工艺水平，并且需求量也是很大的，正因为需求量的巨大，因此他所代表的是一国工业发展的总体水平；作为个人的代步工具，汽车行业的未来市场因此也是相当巨大的，随着人们日均水平的提高，汽车市场正以一种不可阻挡之势在发展，相对于那些处在成熟期的国际汽车行业来说，以小轿车为主流的已经成为了一种必然选择，侧围作为外饰的重要组成部分，集成了汽车门框等重要附件。具有较大的研究意义。本课题根据侧围的结构特点，结合人机工程学，及碰撞安全性，对汽车侧围进行了着重设计与建模。车身大都是侧壁组成。侧围外板是侧围的基准，侧板在整个车身开发过程中处于决定作用，限制和影响着车身制造过程中的焊接顺序和焊接连接。它的设计时间占整个车身设计流程的一半以上，在设计加工模具的产品和制造工艺的过程中，它也占据了很大的比例，整个车身设计的开发将受到侧壁和外部零件的开发进程影响。这就要求我们在开始设计和开发时认真考虑和研究侧板的布局和与侧板匹配的部件的布置。由于组件布局中的缺陷，相对组件布局的改进，请勿更改侧围的组件设计。根据车辆的A方面，考虑过程的要求并演示模型的生产。侧面板的设计基础是侧面板和典型剖面线。并且要考虑整个车身的焊接关系，焊接顺序的设置也为了确保侧围的整体强度要求打下基础。如果修改较大的表面，则需要重新设计室内装置的布局。毕竟汽车的侧围设计是车身设计的重要构成单元。 车身侧围总成的作用：a.乘车员及驾车员能够正常进出于驾驶室内；b.密封、防水、防尘、隔音等；c.连接地板、前围、顶盖、后围使车体形成有内外之分的整体；d.为各种功能及装饰件实现安装和承受来自这些件的作用力（如：安全带拉力，开门拉手拉力等）；e.承受来自于整车的各种扭力及碰撞时保护乘车人员安全的碰撞力。侧围总成一般是由侧围外板、侧围内板、侧围加强板等分总成依次焊接而成，从而构建成为了一个整体，促使车身形成封闭结构，提高车身的整体的强度。从而有效的保护了乘车人员和驾车人员的安全。人体工程学是车身设计过程中的一个非常重要的问题。这就要求我们必须对侧围有一定的了解。如果从功能方面划分，并排系统可以分为三大类：基础本体，功能件，装饰件。对于侧围系统设计，它的基础件就是侧围。然而侧围的基本功能就以下两种:支撑保护和是安装。侧板常常被人们认为是汽车的骨架，是其他车身部件之间相互的振动和载荷。此外，它还是其他车身组件连接的不可少部件。 仅从保护乘车人员的角度来看，我认为传统的侧围可以被认为是一种三维拓扑结构。它应该能够在一系列交通事故中使用其自身材料的变形，例如车辆碰撞，翻车或其他设备，以减少冲击并减少能量传输。在车辆的正面碰撞事故中，驾驶舱可以通过碰撞事故中侧壁的变形来吸收冲击，减少驾驶舱的变形程度，保证乘客所需的生存空间。在侧面碰撞和侧翻事故中，侧板需要提供变形的体积非常小，来减小冲击能量，方便乘员逃跑。通过对车身侧体的系统研发，逐步了解了车身侧围的设计方法。通过优化车身设计，研究轻便车身的开发，为未来环保节能车辆的发展提供参考。力求赶上传统汽车巨头国家的设计理念和方法，积累未来中国汽车车身发展的经验，通过人体工程学的组合，生产出适合一切人群的高性能车辆。2.论文研究的内容和实现方法侧围的快速开发和快速修改的本质是当总体设计参数或者侧围设计参数发生改变后，根据原始预设的设计标准和几何约束关系自动更新并排模型，并改变侧置模型需要改变的几何物理量。它不仅可以保证侧墙设计的初始缘由，而且也会保证侧围的完整性。同样这可以让设计人员免于无聊，并且能够帮助他们节省时间，提高效率，减少工作强度，让他们有更多的时间去尝试和考虑更多的选择。有相当多的时间从解决方案中找到最佳设计。通过在产品设计阶段简单修改尺寸几何，可以实现使用流线型设计数据模型来评估最优设计方案。可以快速参考并从而想出更多设计选项的用途。本论文的主要研究方向和思路包括：1.研究侧围快速简单的开发步骤，并基于此思路构造设计的理论模型。2.综合专家们的意见，对侧围快速简单设计的数据模型和各模型单元处理方式进行改善。3.研究数模工程在侧围快速开发中的具体应用，并且提出它们的实现方式。4.探索车身侧围的典型部分，并创建一个典型的部分数据库。5.进行车身侧围快速开发系统的系统开发和方法验证。6.车身侧面外壳设计尺寸及相关软件设计工作。3.新能源汽车侧围设计的历史回顾和发展方向2017年，中国汽车行业在过去十年迅速发展之后，恢复了稳定增长。就中长期经济发展来看，以国家政策为导向的市场消费需求的影响还是相对短暂的，毕竟汽车行业近几年的快速发张对我国 GDP的增长贡献较高，对经济有巨大的拉到作用，虽然地方性限购政策的出台导致对汽车行业整体售出的影响有一定的影响，不过由于人们经济的增长还是阻止不了汽