共查询到20条相似文献,搜索用时 31 毫秒
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M. Nakao 《CIRP Annals》2008,57(1):163-166
The authors set the functional requirement of “reduce your own risk” and ran sessions of associative search to extract useful knowledge from databases. Ninety engineers found the most analogous knowledge using the associative search engine “GETA/IMAGINE” on scenario-based databases “Failure Knowledge Database” and “100 Scenarios of Failure.” Above 60% of their risk concern cases successfully reached the most analogous accident cases or failure scenarios from either database in about 10 min. Associative search can aid the designer in selecting design solutions for the functional domain. 相似文献
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张岩 《机械制造文摘:焊接分册》2021,(1):22-25
国内焊接结构设计人员多为非焊接或非焊接相关专业背景,对焊接专业知识了解不多,而焊接结构设计则要求考虑焊接热过程对结构带来的很多问题,这些问题最终将影响产品的承载能力,并且很有可能由于焊接而导致结构的低应力失效,所以在焊接结构设计之初就需要考虑焊接工艺给焊接结构带来的各种问题和影响,这就要求从事结构设计的人员具有一定的焊接专业知识,并在普通结构设计的基础上建立焊接结构设计思维,国际焊接结构设计师培训准确的弥补了国内结构设计人员的在焊接结构设计方面的欠缺,帮助设计人员建立焊接结构设计思维模式,对国内的焊接结构设计的提升起到重要作用。 相似文献
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随着先进CAD技术的广泛应用,注塑模具设计内容已发生了很大变化,传统的模具设计方法已不能适应企业的要求.以保鲜盒注塑模具设计为例,研究应用AutoCAD外挂LTOOLS进行点浇口注塑模具设计的整个流程.应用LTOOLS进行模具设计.可大大缩短设计周期,提高设计人员的工作效率. 相似文献
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Nikola Vitković Miloš Stojković Vidosav Majstorović Miroslav Trajanović Jelena Milovanović 《CIRP Annals》2018,67(1):177-180
Bone scaffolds provide a structural support for tissue development. Existing bone scaffolds are mainly characterized by complex porous designs whose shortcomings are a low level of permeability for growing tissue, and a difficult design customization. Scaffolds with nucleuses (rods or lattices) as basic elements should improve bone regeneration and enable higher design flexibility. In this paper, we present two new methods for building 3D geometrical models of personalized scaffolds, which are based on method of anatomical features. Methods are demonstrated in the case of scaffold for the mandible bone. This approach greatly reduces the designer effort and time, while enabling easy personalization of scaffolds’ shape and geometry. 相似文献
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主要从注射模零件的选材、模具结构的确定、零件加工、模具维修等几个方面对模具设计的工艺性进行了论述,介绍了注射模设计与工艺性的关系,结合实例分析了工艺性对注射模设计的影响,并提出了相应的对策,对模具设计人员有一定的借鉴作用。 相似文献
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Conceptual design is a key early activity of product development. Limited understanding of conceptual design process and lack of quantitative information at this stage of design pose difficulties on effective support for concept generation and evaluation. In this paper, a hierarchical co-evolutionary approach is proposed to support conceptual design. In this approach, higher-level functions are decomposed based on a set of grammar rules, and mappings between functions and their solutions, or means, are realized through a co-evolutionary computing process. The paper describes the details of the approach. An example of designing a mechanical personal transporter is presented to demonstrate the effectiveness of the proposed approach. 相似文献
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E. Stiassnie 《CIRP Annals》2007,56(1):1-4
At the outset of designing a new product, knowledge about the product is limited, but the designer has a considerable amount of design freedom. Considering the environmental implications of a product design early in the design phase is a crucial step in achieving an environmentally efficient product. By applying the axiomatic approach to a product's design, the designer can ensure that the final embodiment of the product or service satisfies the obligatory and necessary set of functional requirements and constraints, including environmental issues. In this paper we show how the integration of environmental considerations early in the process of axiomatic design can lead to the development of an environmental-friendly product or service. The paper demonstrates an artificial case study of designing a modern manufacturing system. A major issue investigated in this work is the possibility of assessing environmental performance (or environmental-related information) already in the preliminary stages of the design process. An upper bound for the probability of a product failing to satisfy environmental requirements is introduced. In addition, the suitability of lifecycle analysis to the assessment of products during the process of axiomatic design is discussed. 相似文献
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Knowledge Structuring for Function Design 总被引:1,自引:0,他引:1
Well-structured functional knowledge Is essential to conduct function design as stated by well-known design methods, Including Suh's axiomatic design approach and one of Pahl and Beltz. Innovative design is a consequence of combining different types of knowledge sources, and obviously requires well-structured functional knowledge. The paper focuses on Suh's axiomatic design approach. Through a design example, the paper shows that his first axiom (functional Independence axiom) depends on such well-structured knowledge. This confirms that good design results not from functional Independence of functional requirements but from such well-structured functional knowledge. 相似文献
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针对模具设计人员在一些领域的重复繁琐的工作,以注射模滑块系统中斜导柱的数据计算为例,提出了一种基于Pro/E关系式编程的自动化实现框架,使得设计人员可以进一步享受参数化设计带来的便利。 相似文献
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近十几年来,我国氧化铝工业获得了快速发展,本文从设计的角度出发,分析了氧化铝项目采用标准化设计的优点,对生产工艺方法、设计规模、技术装备水平的标准化进行了可行性分析,并重点就400kt/a这一常用设计规模的技术方案标准化实施问题谈了自己的看法。 相似文献
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Pro/E作为一个常用的机械产品设计软件,不仅提供了强大的设计、分析、制造功能,也为用户提供了开发接口。本文在如何运用MFC进行Pro/E的二次开发得到解决后,使得基于Pro/E的应用程序的功能和界面得到了很大程度的优化。利用Pro/E所提供的开发工具,本文基于Pro/E二次开发了快速反求设计系统,在Pro/E上成功地开发出具有文档/可视结构的应用程序,其界面设计和菜单开发直观、简捷,方便产品设计师的操作使用。 相似文献
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复杂程序单稳态电控系统由于输入信号、约束和联锁条件多等原因,造成设计过程中对设计者的依赖性强、干扰信号的判断与消除困难等问题。移位暂存法无需设计者进行干扰信号的判断与消除,通过合理分级,结合级数、信号元件、时序三者的关系图即可实现复杂单稳态电控系统的设计。仿真和实验结果表明:该方法设计效率高,设计的电气回路结构简单而且具有故障诊断和排除简单、直观等优点,同时可降低设计成本,提高经济性和实用性。 相似文献