论文摘要的英文,论文摘要与提纲.docx
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1、论文内容摘要的英文,论文内容摘要与提纲With the rapid development of China s construction industry, building energyconservation has always been one of the important study subjects. Despite great effort inthis research field, building energy consumption in China remained conspicuouscompared with the developed countries.
2、 In recent years, both national and localauthorities have made norms and standards for the building energy efficiency, which hasplayed a certain role in the protection and support in the energy conservation of existedand new buildings. However, we still lack energy-saving standards for the special k
3、indof buildings such as highway service areas. Characteristic by high populationconcentration and big heating energy consumption, the expressway service area inseasonal frozen regions required more attention to its energy conservation. Based on thestudy background and the reasons above, I performed
4、my paper work with the project ofJILIN Provincial Communication Department., I studied the key techniques for buildingenergy efficiency of highway service area in seasonal frozen regions, explored theoptimization of the building envelope system for energy-saving, and put forward to thestrategy of th
5、e application of the 65% energy saving technologies for the Gongzhulinghighway service area in Siping bureau, the branch of the highway administration in Jilinprovince.Firstly, in this paper, I explained the professional concept seasonal frozen regions in the field of traffic, and made it as the stu
6、dy scope of this article. I elaborate therelated concepts of the energy efficiency by 65% in public buildings, and put forwardthe feature of the building in highway service area and the energy-saving work on it.Secondly, based on the investigation and study of the highway service area inseasonal fro
7、zen regions, I raise the characteristics of the design for the building and theprimary factor for building energy-saving of highway service area.Thirdly, I explored the key techniques for building energy-saving of highwayservice area based on the analysis of the principle of building construction, o
8、ptimizedthe structure design for the important part of building which is likely to grow to buildingthermal bridge, designed a prefabricated window board which is beneficial to windowenergy efficiency and put forward to a set of technologies which will make theenergy-saving rate reach 65% in the buil
9、ding of highway service area in seasonal frozenregions.AbstractAs one of the most important mechanical transmission elements, gears have applications inlots of industrial fields such as motor-behicle, wind power,aviation and ship craft. The currenttrend is towards high-speed and heavy-load. It has a
10、 certain practical significance to establish areasonable model of gears and have a in-depth study of the factors that influence gear meshingtansmission for enhancing the gears load-bearing capacity and transmission stability, savingdesign time and the cost of experiment. Based on FEA method, This ar
11、ticle studies the effects oflength of shaft、rotational speed and load on characteristics of gears in dynamic meshing,analyzes the effects of shaft and load on meshing stiffiiess at the same time. This article mainresearch content is as follows:1this article deduces the formula of the maximum contact
12、 stress of gears based on Hertzcontact theory, introduces the finite algorithm to solve the problem of contact, summarizes themain technical points of solving the dynamic contact problems based on ANSYS, providingtheoretical basis for the analysis of gear contact. This article establishes a finite e
13、lement modelof shaft and gears, optimizes the finite element meshing model.2Based on the principle of straight gear involute tooth profile surface,this articleestablishes three-dimensional parametric modeling of gears. Considering the influence of shaftdeformation on the properties of gear dynamic m
14、eshing,meshes the model through thegeometric partitioning. It makes necessary preparations for the objective and accurate analysisof dynamic characteristics of gear contact3Based on the reasonable finite element model of gears,this article makes in-depthstudy the dynamic characteristics of gears, ge
15、ts the rule of the maximum contact stress with themeshing position changes,studies the stress distribution of tooth surface. Results show that thedynamic contact analysis based on the shaft and gear transmission model can accurately,real-time simulate the gear dynamic meshing process, providing the
16、reference and basis for geardesign4Considering the variability of gear transmission system working conditions, thisarticle takes the example of three typical work factors like the axial length, speed and load,thisarticle establishes comparative analysis models,studies their influences on dynamic mes
17、hingcharacteristics. The results show as follows: The axial length has great effect on the stressdistribution of the gear tooth surface; Speed has a great influence on the gear meshing contactcharacteristics, with the increase of rotational speed,gear contact stress increases; the speedamplitude of
18、driven gear increases when the speed of driving gear increases, and when therotation speed reaches 200 rad/s, driven gear s speed amplitude increases sharply, the resultsprovide guidance of the choice of reasonable speed ranges. The influence of load on gear sspeed amplitude is not big, but with the
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