共查询到20条相似文献，搜索用时 187 毫秒
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随着计算机技术的不断发展 ,计算机辅助绘图技术使传统的二维绘图发生了本质的变化 ,因此产品设计等可在计算机屏幕上进行三维实体造型 ,来代替传统的手工绘图 ,从而使制图人员从繁重的手工绘图工作中解放出来。教学是为生产服务的 ,所以在机制图教学中培养学生的空间想象能力需加强三维绘图的教学研究 相似文献
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试析非机类工程制图“一体两翼”的教学新模式 总被引：1，自引：0，他引：1
文章针对非机类专业的工程制图课程提出了"一体两翼"的教学新模式,即"以二维教学为主体,加强徒手轴测图训练和计算机三维实体造型技术";形成了工程制图课程新的教学内容体系,并进行了初步的教学实践. 相似文献
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严丽丽 《海南广播电视大学学报》2008,9(3):57-58
现代先进制造技术与CAD技术的关系及培养学生创造性三维设计能力是新时代《工程制图》课程教学的基本要求。据此,文章提出目前制造类专业《工程制图》教学内容及课程体系应加强计算机三维造型方面的教学,并阐述了教学改革的设想,探讨了课程内容和体系改革的思路。 相似文献
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本文通过分析工程制图教学的现状和三维CAD技术发展的情况，指出当前的教学与实践之间所存在的差异之处．并根据三维CAD技术在工程应用的实际情况，提出工程制图应加强计算机三维造型方面的教学，以及进一步教学改革的内容． 相似文献
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张伟华 《兰州石化职业技术学院学报》2012,(3):63-66
针对是否要将三维CAD建模融入工程图学教学中的问题,阐述了将三维CAD建模引入制图课程的背景,归纳了三维CAD引入制图教学中的三种教学模式,并比较了各自的形式和特点,同时分析了三维CAD与传统制图教学融合存在问题。最后指出在将三维CAD建模引入传统制图教学中时,应该着重解决传统制图教学内容与现代三维CAD建模融合与呼应的不足,使得传统制图教学与三维CAD建模有机结合。 相似文献
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基于3D CAD技术的工程制图教学改革探讨 总被引：1，自引：0，他引：1
作为工程设计和产品开发工具的三维CAD应用必将普及.3D CAD/CAM技术的发展对工程制图教学提出了严峻的挑战,工程制图教学应将传统工程制图与二维CAD、三维CAD分块进行教学,并建议组织开设课程设计,以提高用计算机建立三维产品模型和生成二维工程图的能力. 相似文献
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Brian Jones 《Research in Science Education》1984,14(1):104-113
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本实验利用时差法测得超声波在非线型固体介质中纵波的传播速度,根据待测物体的密度,从而计算出非线型固体物质的杨氏模量。该实验的测量原理简单,方法直观可行,测量结果可靠。 相似文献
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Don F. Westerheijden 《Higher Education》1997,33(4):397-413
To gain insight into the use of the VSNU research quality evaluations (since 1993) in the practice of research and of institutional management in Dutch universities, interviews were held in eight cases evaluated in the first year of this procedure. The main conclusions are that use of these research evaluations is universal, both instrumentally (in decisions directly based on the judgements) and incrementally (in decision-making processes not directly linked to the evaluation). Underlying this is conceptual use: an important change in deans and rectors views of their role in managing research, which they now can realise, because the VSNU research evaluations give them, for the first time, solidly legitimate arguments on which to base strategic decisions. Next to use, other effects can be discerned within universities, pointing to a growing dependency of researchers on managers, necessitating amongst others ever more consciously strategic publication behaviour. Whether quality of research improves in this way, cannot be answered here, but certainly it is more difficult for academics not to engage in research. 相似文献
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Sanitary landfilling is the most important method of municipal solid waste disposal in China. Landfill sites are always set
up in mountain valley, on plain or beside seashore. A complete landfill consists of base system, cover system, and leachate
collection and gas extraction system. This paper reviews the state-of-the-art landfilling technology in China and collection
discusses research projects for engineers.
Project(59878050) supported by National Natural Science Foundation of China(NSFC) 相似文献
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介绍了单叶双曲面和双叶双曲面的定双曲线和动椭圆的做法以及动椭圆沿定双曲线滑动的动画制作方法. 相似文献
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In this paper we propose a method to model flowers of solid shape. Based on （Ijiri et aL, 2005）＇s method, we separate individual flower modeling and inflorescence modeling procedures into structure and geometry modeling. We incorporate interactive editing gestures to allow the user to edit structure parameters freely onto structure diagram. Furthermore, we use free-hand sketching techniques to allow users to create and edit 3D geometrical elements freely and easily. The final step is to automatically merge all independent 3D geometrical elements into a single waterproof mesh. Our experiments show that this solid modeling approach is promising. Using our approach, novice users can create vivid flower models easily and freely. The generated flower model is waterproof. It can have applications in visualization, animation, gaming, and toys and decorations if printed out on 3D rapid prototyping devices. 相似文献
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A droplet undergoes spreading,rebounding or splashing when it impacts solid boundary,which is a typical phenomenon of free surface flow that exists widely in modern industry.Smoothed particle hydrodynamics（SPH）method is applied to numerically study the dynamical behaviors of the droplet impacting solid boundary,and both the spreading and rebounding phenomena of the droplet are reproduced in the simulation.The droplet deformation,flow fields and pressure fields inside the droplet at different moments are analyzed.Two important factors,the initial velocity and diameter,are discussed in determining the maximum spreading factor,revealing that the maximum spreading factor increases with the increase of the impact velocity and droplet diameter respectively. 相似文献