新能源汽車側圍設計與建模含8張CAD圖
新能源汽車側圍設計與建模含8張CAD圖,新能源,汽車,設計,建模,cad
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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中國新能源汽車側圍設計的發(fā)展
文摘
汽車內外部裝飾是近年來的國內新興產業(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襯裝飾、側圍和門的裝飾、儀表板的裝飾、座椅的裝飾、地板的裝飾以及內飾精品的裝飾。國內外對于汽車的裝飾各有不同，他們關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，以提高汽車內室的美觀性和實用性、舒適性為目的。
本文所介紹的主要內容是關于新能源汽車側圍的設計。根據資料查閱了解和掌握汽車側圍的結構特點，對汽車側圍進行工藝性分析，對其凹凸模進行設計與研究。設計出汽車側圍總的方案，了解側圍斷面的結構。根據其斷面結構進行三維建模。完成裝配零件圖。本文對于我大學四年不僅是一次很好地歷練，還為今后的學習和工作打下基礎。
關鍵詞 新能源汽車；汽車側圍；裝飾板；設計；建模
1.論文研究的目的和意義
隨著全球經濟的增長，就目前國際對汽車行業(yè)的需求量達到年產100萬以上，這僅僅是對于小橋車的需求，汽車總產已超150萬輛，當前市場主要是以小轎車為主導，目前所有汽車公司都以生產重型，中型和輕型車型，包括轎車，卡車和越野車為主導產業(yè)。當然現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巨大的，隨著人們日均水平的提高，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成為了一種必然選擇，側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。本課題根據側圍的結構特點，結合人機工程學，及碰撞安全性，對汽車側圍進行了著重設計與建模。
車身大都是側壁組成。側圍外板是側圍的基準，側板在整個車身開發(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。它的設計時間占整個車身設計流程的一半以上，在設計加工模具的產品和制造工藝的過程中，它也占據了很大的比例，整個車身設計的開發(fā)將受到側壁和外部零件的開發(fā)進程影響。這就要求我們在開始設計和開發(fā)時認真考慮和研究側板的布局和與側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，請勿更改側圍的組件設計。根據車輛的A方面，考慮過程的要求并演示模型的生產。側面板的設計基礎是側面板和典型剖面線。并且要考慮整個車身的焊接關系，焊接順序的設置也為了確保側圍的整體強度要求打下基礎。如果修改較大的表面，則需要重新設計室內裝置的布局。畢竟汽車的側圍設計是車身設計的重要構成單元。
車身側圍總成的作用：a.乘車員及駕車員能夠正常進出于駕駛室內；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外之分的整體；d.為各種功能及裝飾件實現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乘車人員安全的碰撞力。
側圍總成一般是由側圍外板、側圍內板、側圍加強板等分總成依次焊接而成，從而構建成為了一個整體，促使車身形成封閉結構，提高車身的整體的強度。從而有效的保護了乘車人員和駕車人員的安全。
人體工程學是車身設計過程中的一個非常重要的問題。這就要求我們必須對側圍有一定的了解。如果從功能方面劃分，并排系統(tǒng)可以分為三大類：基礎本體，功能件，裝飾件。對于側圍系統(tǒng)設計，它的基礎件就是側圍。然而側圍的基本功能就以下兩種:支撐保護和是安裝。
側板常常被人們認為是汽車的骨架，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。
僅從保護乘車人員的角度來看，我認為傳統(tǒng)的側圍可以被認為是一種三維拓撲結構。它應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。在側面碰撞和側翻事故中，側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。
通過對車身側體的系統(tǒng)研發(fā)，逐步了解了車身側圍的設計方法。通過優(yōu)化車身設計，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)汽車巨頭國家的設計理念和方法，積累未來中國汽車車身發(fā)展的經驗，通過人體工程學的組合，生產出適合一切人群的高性能車輛。
2.論文研究的內容和實現方法
側圍的快速開發(fā)和快速修改的本質是當總體設計參數或者側圍設計參數發(fā)生改變后，根據原始預設的設計標準和幾何約束關系自動更新并排模型，并改變側置模型需要改變的幾何物理量。它不僅可以保證側墻設計的初始緣由，而且也會保證側圍的完整性。同樣這可以讓設計人員免于無聊，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。有相當多的時間從解決方案中找到最佳設計。通過在產品設計階段簡單修改尺寸幾何，可以實現使用流線型設計數據模型來評估最優(yōu)設計方案。可以快速參考并從而想出更多設計選項的用途。
本論文的主要研究方向和思路包括：
1.研究側圍快速簡單的開發(fā)步驟，并基于此思路構造設計的理論模型。
2.綜合專家們的意見，對側圍快速簡單設計的數據模型和各模型單元處理方式進行改善。
3.研究數模工程在側圍快速開發(fā)中的具體應用，并且提出它們的實現方式。
4.探索車身側圍的典型部分，并創(chuàng)建一個典型的部分數據庫。
5.進行車身側圍快速開發(fā)系統(tǒng)的系統(tǒng)開發(fā)和方法驗證。
6.車身側面外殼設計尺寸及相關軟件設計工作。
3.新能源汽車側圍設計的歷史回顧和發(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，恢復了穩(wěn)定增長。就中長期經濟發(fā)展來看，以國家政策為導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的增長貢獻較高，對經濟有巨大的拉到作用，雖然地方性限購政策的出臺導致對汽車行業(yè)整體售出的影響有一定的影響，不過由于人們經濟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，據統(tǒng)計，截止2017年，我國汽車銷量已高達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量高達6000萬輛。這些城市的銷量在全國汽車總擁有量的占據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。一定程度上促進了汽車產量的持續(xù)飆升，為
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