共查询到20条相似文献,搜索用时 562 毫秒
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快餐折叠纸盒的选用和结构设计陆佳平StructureDesignandApplicationofFoldingCartonsUsedWithFastFoods¥LuJiaPingAbstract:Withtheraiseofthesenseofenv... 相似文献
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纸盒加工数字化流程的发展前景 总被引:2,自引:2,他引:0
随着数字化技术在包装印刷业的不断渗入,纸盒加工过程数字化的实现将倍受瞩目.文中从包装结构计算机辅助设计(CAD)技术、纸盒样品CAM系统、JDF技术等方面全面分析了纸盒加工数字化流程,阐述了纸盒加工数字化流程的发展前景. 相似文献
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包装纸盒CAD系统的设计研究 总被引:3,自引:2,他引:1
提出了一种从包装纸盒二维平面图出发自动构造出三维立体盒型的方法.根据二维平面图自动搜索出盒型面并进行盒型拓扑结构分析,最后以"图"的数据结构为基础建立包装盒三维模型构造的算法.该系统还能实现纸盒动画、贴图等效果,提高了纸盒设计的效率和质量. 相似文献
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为了适应现代工业的发展,缩短产品包装的周期,提高纸盒的精度和产品在市场的竞争力,满足自动化包装以及商品出口对纸盒的要求,德国、美国等先进工业国在70年代初期就成功地研制了纸盒计算机辅助设计/制造(CAD/CAM)系统,包装印刷企业在80年代末就普遍采用了纸盒CAD/CAM新工艺。今年5月份在德国杜塞尔多夫举办的“Drupa2000国际印刷及媒体”展览会上,德国的MARBACH公司、LASERCOMB公司以及GERBER集团公司等展示了最新开发研制的纸盒CAD/CAM系统。最近几年,我国一些企业如… 相似文献
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结合GB5033-85<出口产品包装用瓦楞纸箱标准>及GB5034-85<出口产品包装用瓦楞纸板标准>,利用VBA对AutoCAD进行二次开发纸盒设计系统,建立了平面纸盒展开图的参数化设计,使得设计包装纸盒变的更加快捷、方便、标准. 相似文献
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滤棒重量、压降稳定性对卷烟重量、吸阻稳定性的影响 总被引:1,自引:0,他引:1
烟支吸阻及重量稳定性是影响卷烟质量的重要指标。为解决卷烟吸阻及重量稳定性方面存在的问题,本文从理论方面分析了滤棒段压降、重量与烟支段吸阻、重量对整支卷烟吸阻及重量稳定性的影响,并结合实例进行了分析。结果表明,滤棒段的压降波动对整支卷烟的吸阻影响很大,而滤棒和材料重量的波动对整支卷烟重量的影响很小。 相似文献
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The Overcoat Oil Lubrication of Microarc Oxidation Coating on Al Alloy by Liquid Plasma Technique 总被引:1,自引:0,他引:1
Ceramic coatings were deposited on 2Al2 alloy with a 100 kW micro-arc oxidation equipment consisting of a potential adjustable ac power supply and alkali electrolyte. The structure of the micro-arc oxidiation coatings was examined using scanning electron microscopy and transmission electron microscopy. The tribological properties of the coatings sliding against steel under the drop and adsorption lubrication of liquid paraffin were evaluated with a Timken tester. The lower friction coefficient of 0.14 and longer wear life of 2450 m of overcoat were observed for the polished micro-arc oxidation coating of 180μm thick at a sliding speed 2. 50 m/s and load 1500 N. This is because the coating has an interlayer of suitable porosity and thickness, which helps to improve the deposition of lubricants and endure the higher load. In other words, the oil is able to adsorb in the porous holes of the overcoat and provided the lubrication of micro reservoir during friction, and the compact and relatively hard interlayer of oxidation coating is able to support heavy load and prevent the oil lubricating film from damage. 相似文献
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《Mauerwerk》2017,21(2):114-128
In June 2006, the Chair of Structural Design at the Technical University of Dresden was commissioned by the Iranian cultural authority ICHHTO and the UNESCO to perform structural design services for the earthquake‐resistant repair and rebuilding of the Sistani House in the historic citadel Arg‐e‐Bam in the south of Iran. The citadel was until its almost complete destruction by an earthquake on 26 Dezember 2003 the largest building of unburnt brick masonry in the world and is listed as a World heritage Site by UNESCO because of its cultural and historical significance. Surveying and documentation work, archaeological rubble clearance and the rebuilding of the Sistani House after its destruction by the earthquake have taken the team from the department to Bam at regular intervals since 2006. In the course of the work, it became apparent that research was needed in the field of the repair of earthquake‐damaged unburnt brick masonry and into the improvement of the shear strength/earthquake resistance and the weather protection of unburnt brick masonry. The article is subdivided in Part 1, Introduction, test performance and assessment of results for additives to loam render as well as Part 2, Assessment of the results for surface treatment to unburnt bricks and the climatic chamber tests. 相似文献
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研究了单壁纳米管(SWCNT)与对三联苯(p-Terphenyl)分子的交互作用和束散现象.SWCNTs分别由电弧放电法和一氧化碳高压分解法(Hipco法)制备.比较了不同制备工艺及纯化处理后SWCNTs与p-Terphenyl交互作用及其束散程度.采用分光和显微镜等技术,探讨了SWCNTs及其与p-Terphenyl交互作用.应用X光能量消散(EDAX)技术,给出了纯化处理前后SWCNTs试样的元素分析.利用萤光分析和原子显微镜技术评估了SWCNTs交互作用及束散程度.研究显示:SWCNTs束散程度及其和p-Terphenyl交互作用的强弱与SWCNTs纯化程度有关. 相似文献
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目的 在我国文博事业发展向好的背景下,研究将数字化技术应用于文博场域,促进文博事业有创新、长久的实质性提升与发展。方法 通过文献研究法,掌握文博发展现状和发展困境,将文博场域从前、中、后,以及全过程的游览角度进行分析,避免研究主体的空泛、不落地;通过理论分析法,立足于数字孪生技术,对文博场域的管理和应用展开设计,提出数字化技术文博场域设计的三要素,进而将数字孪生技术融于文博场域游览的全过程,更好地打造精准、一体化的体验,以智能化技术改善和提升文博场域的管理和应用。结论 在精神需求与日俱增的背景下,文博场域与数字化技术手段的结合具有极高适配性,也是发展的必然结果。借助数字孪生技术推进文博场域物理和虚拟空间的融合,为观者带来更加沉浸、长远的体验和感悟。打造文博场域的数字化管理和游览全过程,提出未来的发展方向,为文博事业的发展提供实践性参考。 相似文献
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A. Scholz M. Schwienheer Dr.‐Ing. F. Müller S. Linn M. Schein C. Walther C. Berger 《Materialwissenschaft und Werkstofftechnik》2007,38(5):372-378
High temperature testing – A contribution to alloy development, alloy qualification and simulation of component loading In parallel to continued developments of steam and gas turbines as well as traffic engineering machines on the one hand, and marginal conditions like low specific fuel consumption and sufficient environment‐friendliness on the other hand, the aim of improving the degree of efficiency by augmenting process parameters such as temperature and pressure is being followed. These efforts impact especially components of thermic machines and facilities subject to high thermal and mechanic exposure. Still largely unexplored is the interaction between microstructure characteristics determined through chemical composition, production processes and heat treatment, changes in the microstructure due to multiaxial load and the time‐dependent deformation and stability resulting hereof. With regard to this background, improved methods of material properties determination, their modelling and transfer on the component enable to optimize wall thicknesses and degrees of efficiency. In the course of evaluation of static and cyclic material properties carried out also on faulty specimens, uncertainties occur which can originate from the testing process and analysis, as well as being influenced by the material itself and its process of production. Altogether, the demand for reliable determination of material properties and methods of scatterband treatment and their mathematical‐statistical evaluation is in business. For simulation, consistent material datasets that describe the complex interaction between temperature, period of exposure and type of exposure are needed. Summarizing, the tasks dealt with qualify the entire process from production to the operational behaviour of components. 相似文献
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为了预测重组竹制品在实际使用中的寿命,基于X射线计算机断层扫描技术(X-ray computed tomography technology,X-CT),采用标准BS EN 1087-1:1995作为重组竹湿热耦合老化条件,以其CT值和老化分析指标的数学模型评估重组竹湿热耦合老化后结构强度的损失。结果表明:重组竹老化后密度、内胶合强度和CT值均小于老化前,且老化前后差异显著。随老化时间增加,其密度、内胶合强度和CT值的损失均增加,且变化趋势基本一致,在1~2 h阶段变化较大,在2.5~4.5 h阶段变化较平缓,在老化4.5 h时达到峰值;将CT值差值与密度差值拟合为线性模型,模型相关系数R2=0.9270,验证模型R2=0.9438。CT值差值与内胶合强度差值拟合为Allometric模型,模型相关系数R2=0.9488,验证模型R2=0.9439;竹材自身的植物学特征及重组竹压制工艺造成了试验数据离散及老化前后离散程度发生改变。可通过改善重组竹制备工艺提高其内部均匀性及降低老化前后离散程度变化,以提高模型预测精度。 相似文献
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目的 通过对元代肖形印图文融合特征的分析归纳,总结其图文组织关系与印面经营策略,在完成元代肖形印图形传统文化价值挖掘与保护的基础上,尝试为传统视觉经典的当代设计转化继承带来有益思考。方法 从元代肖形印图文融合的历史文化背景入手,分析其出现的缘由与特征,并在此基础上梳理探讨元代肖形印的图文融合策略,及其对当代设计的关联启示。结论 与先秦及汉代肖形印不同,图文融合是元代肖形印的显著特征,其具有多样化的适形、多层次意指和多元素碰撞的核心构建逻辑。文字的图形化、雅文化的大众普适及符号凝练的求同存异,则分别是元代肖形印对图文融合需求、市民文化需求和形式法则需求的具体回应,这便成为现代设计对元代肖形印图形继承转化的有效切入点。 相似文献