检索结果-南通市图书馆

Method for Functional Design of Axiomatic Design Based on Connections

Chinese Journal of Mechanical Engineering 2011年第3期24卷 364-371页

作者： deng jianxin SHAO Ming School of Mechanical and Automotive Engineering South China University of Technology Guangzhou 510640 China Key Laboratory of Manufacturing System ＆ Advance Manufacturing Technology of Guangxi Province Guangxi University Nanning 530004 China

Axiomatic design（AD） is a popular design method,and satisfying the independence axiom is the basis of ***,AD doesn＇t provide methods to decompose functions then keep them independent and to handle coupled design.A few of ways of handling coupled design are mainly passive resolutions when coupled design exists,but not efficient to each product ***,this paper presents an innovative approach to design and decompose functions of complex products based on functional connections,aiming at actively avoiding functional *** contrasting with component networks,four kinds of relations among functions are identified,including spatial,energy,material,and information *** the definitions of these relations and the dominant connection are *** on the definitions,the principles of functional decomposition and design are developed,in which each non-leaf function is broken into sub functions centered on its dominant connection with avoidance of functional cross and coupling,and sequentially satisfies the independence *** the operational flow of the proposed approach is *** the dominant connection of a function,decomposing the function into sub functions in terms of the dominant connection and reverse examination and optimization are planed as the core steps in each *** process output（IPO） analysis is introduced to obtain the dominant connection of a function,some rules for examining and optimizing the decomposition results reversely according to oriented object theory are presented as *** illustrative example about the pouring function of squeeze casting equipments presented demonstrates how to use the proposed approach,and indicates its *** proposed approach expands the principles of AD,constructs a guidance policy for independent functional design of complex products based on AD,and can help decrease or actively avoid coupled design and improve design efficiency.

关键词： axiomatic design functional design complex product functional decomposition connections squeeze casting equipment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Adhesion Wear on Tool Rake and Flank Faces in Dry Cutting of Ti-6Al-4V

引用

Chinese Journal of Mechanical Engineering 2011年第6期24卷 1089-1094页

作者： deng jianxin LI Yousheng ZHANG Hui Department of Mechanical Engineering Shandong UniversityJinan 250061China

Titanium alloys are very chemically reactive and,therefore,have a tendency to weld to the cutting tool during *** deterioration in the tool life caused by adhesion is a serious problem when titanium alloys are cut using carbide *** chemical reactivity of titanium alloys with carbide tool materials and their consequent welding by adhesion onto the cutting tool during dry cutting leads to excessive chipping,premature tool failure,and poor surface *** the present study,dry turning and milling tests were carried out on Ti-6Al-4V alloys with WC?Co carbide *** adhesion on the tool rake and flank face was explored,the adhesive joint interface between the workpiece materials and tools were *** observation showed that adhesion can be observed both on the rake and the flank face,and was more pronounced in rake face than in flank *** was evidence of element diffusion from the tool rake face to the adhering layer(vice versa) through the adhesive joint interface,which leads to the tool element loss and microstructure *** the adhering materials at the flank face can be easily separated from the joint interface owing to the lower temperature and less pressure at the flank face,the adhesive wear attack results in an abrasive wear in the flank ***,adhesion is more notable in turning than in *** proposed research provides references for studying the adhesion between the workpiece materials and the tools,the adhesion mechanisms and their effect on the tool wear.

关键词： adhesion wear dry cutting carbide tools Ti-6Al-4V alloy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Friction and Wear Behaviors of MoS_2/Zr Coated HSS in Sliding Wear and in Drilling Processes

引用

Chinese Journal of Mechanical Engineering 2012年第6期25卷 1218-1223页

作者： deng jianxin YAN Pei WU Ze Department of Mechanical Engineering Shandong UniversityJinan 250061China

MoS2 metal composite coatings have been successful used in dry turning, but its suitability for dry drilling has not been yet established. Therefore, it is necessary to study the friction and wear behaviors of MoS2/Zr coated HSS in sliding wear and in drilling processes. In the present study, MoS2/Zr composite coatings are deposited on the surface of W6Mo5Cr4V2 high speed steel（HSS）. Microstructural and fundamental properties of these coatings are examined. Ball-on-disc sliding wear tests on the coated discs are carried out, and the drilling performance of the coated drills is tested. Test results show that the MoS2/Zr composite coatings exhibit decreases friction coefficient to that of the uncoated HSS in sliding wear tests. Energy dispersive X-ray（EDX） analysis on the wear surface indicates that there is a transfer layer formed on the counterpart ball during sliding wear processes, which contributes to the decreasing of the friction coefficient between the sliding couple. Drilling tests indicate that the MoS2/Zr coated drills show better cutting performance compared to the uncoated HSS drills, coating delamination and abrasive are found to be the main flank and rake wear mode of the coated drills. The proposed research founds the base of the application of MoS2 metal composite coatings on dry drilling.

关键词： cutting tools coating MoS2 wear mechanisms

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Review of Design of Process Parameters for Squeeze Casting

引用

Chinese Journal of Mechanical Engineering 2023年第6期36卷 22-35页

作者： jianxin deng Bin Xie Dongdong You Haibin Huang Guangxi Key Lab of Manufacturing System and Advanced Manufacturing Technology School of Mechanical EngineeringGuangxi UniversityNanning 530003China National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of TechnologyGuangzhou 510640China

Squeeze casting(SC)is an advanced net manufacturing process with many advantages for which the quality and properties of the manufactured parts depend strongly on the process ***,a universal efficient method for the determination of optimal process parameters is still *** view of the shortcomings and development needs of the current research methods for the setting of SC process parameters,by consulting and analyzing the recent research literature on SC process parameters and using the CiteSpace literature analysis software,manual reading and statistical analysis,the current state and characteristics of the research methods used for the determination of SC process parameters are *** literature data show that the number of pub-lications in the literature related to the design of SC process parameters generally trends upward albeit with signifi-cant *** of the research focus shows that both“mechanical properties”and“microstructure”are the two main subjects in the studies of SC process *** regard to materials,aluminum alloys have been extensively *** methods have been used to obtain SC process parameters:Physical experiments,numeri-cal simulation,modeling optimization,formula calculation,and the use of empirical *** experiments are the main research *** main methods for designing SC process parameters are divided into three categories:Fully experimental methods,optimization methods that involve modeling based on experimental data,and theoreti-cal calculation methods that involve establishing an analytical *** research characteristics and shortcomings of each method were *** simulations and model-based optimization have become the new required *** the development needs and data-driven trends of the SC process,suggestions for the develop-ment of SC process parameter research have been proposed.

关键词： Squeeze casting Process parameter design Process parameter optimization Data-driven Neural network Research method analysis Literature analysis CiteSpace

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Radial Grip Rigidity of the Matching of Lengthened Shrink-fit Holder and Cutter in High-speed Milling

引用

Chinese Journal of Mechanical Engineering 2012年第1期25卷 179-183页

作者： ZHOU Houming WANG Chengyong deng jianxin PENG Ruitao School of Mechanical Engineering Xiangtan UniversityXiangtan 411105China Institute of Manufacturing Technology of Guangdong University of Technology Guangzhou 510006China

Though the lengthened shrink-fit holder (LSFH) is widely applied in high speed milling of the parts characterized by deep cavities at present, its design and selection mainly depends on the experience and lacks a correct theoretical guidance. In this paper, attention is focus on the radial grip rigidity of the matching of LSFH and cutter in high speed milling. Based on the experiment modal analysis (EMA) technique, an accurate finite element model of the matching of LSFH and cutter is established firstly. Subsequently, the influence of different interference, grip length and spindle speed on the grip rigidity of LSFH are analyzed. The analysis results show that there is a reasonable interference and grip length between the LSFH and cutter so that to have a steepless grip and have a good radial grip rigidity and at the same time to avoid the strength of LSFH to exceed it’s yield limit which will reduce the precision and service life of LSFH, besides when spindle speed reach a extension the weakening influence of the centrifugal force on the radial grip rigidity of the matching of LSFH and cutter should been taken into account. Finally, the finite element analysis results are verified based on the construction of measurement method of the grip rigidity and the results fit very well. The studies provide a theoretical basis for the design, selection and the serialization and standardization of the matching of LSFH and cutter.

关键词： Lengthened shrink-fit holder Finite element analysis Radial grip rigidity High speed milling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design and development of SiC/(W,Ti)C gradient ceramic nozzle

引用

Science China(Technological Sciences) 2008年第1期51卷 77-84页

作者： LIU LiLi deng jianxin WANG Yi ZHU LiNa Department of Mechanical Engineering Shandong UniversityJinan 250061China School of Mechanical and Electrical Pingyuan UniversityXinxiang 453003China School of Mechanical and Electrical Beijing Jiaotong UniversityBeijing 100045China

The idea of functionally gradient material (FGM) theory was used to design ceramic nozzle based on the erosion wear behaviors of the ceramic nozzles and the out- standing properties of FGM. The purpose is to reduce the tensile stress at the entry region of the nozzle during sand blasting processes. The design theory and methods of gradient ceramic nozzle were proposed. The physical, micromechanical, and composition distribution models of gradient ceramic nozzle were established. The optimum composition distribution of the gradient ceramic nozzle material was determined from the solution of the multi-objective optimization calculation by constructing the models of the composition distribution versus the structural in- tegrity of the compact in fabricating process. Results showed that compressive residual stresses appeared at the entry area of the gradient ceramic nozzle. The optimized component distribution exponent p is 0.5. An SiC/(W,Ti)C gradient ce- ramic nozzle material was synthesized by hot-pressing according to the design result. Results showed that the surface Vickers hardness of the FGM-1 gradient ceramic nozzle materials was greatly improved in comparison with that of the other layers.

关键词： ceramic nozzle erosion wear function gradient material stress Finite element analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

参与建构:中国何以言说人权

引用

政法论坛 2018年第4期36卷 127-133页

作者：邓建新中国政法大学法学院

理解中国人权可以从＂中国何以言说人权＂的问题出发,在人权话语与社会变迁之间的联系中寻得解释。话语方法视话语为一种社会实践,受到社会结构和其他社会实践的牵制。解读人权文本的目标并非观念或思想,而是言语行为的主体间性意涵。... 详细信息

理解中国人权可以从＂中国何以言说人权＂的问题出发,在人权话语与社会变迁之间的联系中寻得解释。话语方法视话语为一种社会实践,受到社会结构和其他社会实践的牵制。解读人权文本的目标并非观念或思想,而是言语行为的主体间性意涵。从历史上看,人权话语参与重构了中国人的主体地位、社会关系,乃至知识和信仰,参与改变了政治权力的存在形态。人权话语具有参与建构秩序的作用,因此中国人权学者的首要任务是直面中国问题,通过言说人权促进中国文化达成一种新的共识。

关键词：中国人权社会变迁话语建构

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

美国学者加里·斯奈德的佛教本土化实践

引用

世界宗教文化 2024年第3期 88-94,141页

作者：邓建新中央民族大学外国语学院

加里·斯奈德是美国文化学者、诗人和散文家。他从小喜爱东方文化,学习、体验佛教,将佛教诸多内容融会贯通,批判西方文化,倡导文化、经济领域的革命,提出自己的生态思想,璧画理想世界的图景。尽管他的观点存在自相矛盾之处以及乌托邦色... 详细信息

加里·斯奈德是美国文化学者、诗人和散文家。他从小喜爱东方文化,学习、体验佛教,将佛教诸多内容融会贯通,批判西方文化,倡导文化、经济领域的革命,提出自己的生态思想,璧画理想世界的图景。尽管他的观点存在自相矛盾之处以及乌托邦色彩浓厚,但其努力体现了美国佛教本土化的一个重要层面。

关键词：加里·斯奈德美国佛教佛教本土化

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

自润滑陶瓷刀具切削过程中的减摩机理研究

引用

硅酸盐学报 2006年第10期34卷 1232-1237页

作者：曹同坤邓建新青岛科技大学机电工程学院山东青岛266061 山东大学机械工程学院济南250061

采用热压法CaF2作为添加剂,Al2O3/TiC(LT55)作为基体制备出了自润滑陶瓷刀具,并对其进行了干切削试验。在切削过程中,在刀具前刀面上能形成自润滑膜,从而使刀具具有减摩性能。用扫描电镜观察了前刀面和后刀面微观结构。LT55在切削加工4... 详细信息

采用热压法CaF2作为添加剂,Al2O3/TiC(LT55)作为基体制备出了自润滑陶瓷刀具,并对其进行了干切削试验。在切削过程中,在刀具前刀面上能形成自润滑膜,从而使刀具具有减摩性能。用扫描电镜观察了前刀面和后刀面微观结构。LT55在切削加工45钢时,Al2O3/TiC/CaF2(ATF)自润滑陶瓷刀具前刀面的平均摩擦系数比未添加固体润滑剂的LT55陶瓷刀具显著降低,其主要原因是在ATF自润滑陶瓷刀具的前刀面上形成了一层固体润滑膜,这层润滑膜可起到减摩作用。自润滑刀具在切削过程中,自润滑膜经历生成、破损、脱落、再生成的循环过程,因此,ATF自润滑陶瓷刀具在其整个生命周期内都具有自润滑效果。自润滑刀具后刀面不存在固体润滑膜,具有较明显的磨料磨损特征。

关键词：陶瓷刀具自润滑干切削摩擦磨损

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

有决策时间窗匹配问题的决策优化支持模型

引用

计算机集成制造系统 2021年第6期27卷 1728-1740页

作者：张海平邓建新广西大学机械工程学院广西南宁530004 广西大学广西制造系统与先进制造技术重点实验室广西南宁530004

为了得到有决策时间窗限制的服务匹配决策问题的个体决策者的最优决策,定义了基于资源分布的时间窗匹配的个体决策问题,考虑了时间窗对决策者决策心理的影响,将问题的综合决策收益定义为期望收益与收益风险两个部分;基于时间窗内业务分... 详细信息

为了得到有决策时间窗限制的服务匹配决策问题的个体决策者的最优决策,定义了基于资源分布的时间窗匹配的个体决策问题,考虑了时间窗对决策者决策心理的影响,将问题的综合决策收益定义为期望收益与收益风险两个部分;基于时间窗内业务分布会发生变化的本质构建了考虑时间影响的期望收益模型;基于决策者在时间窗内对时间风险的3种态度,引入紧迫系数将其划分为对应的3个阶段,通过计算各阶段决策收益参照点与决策期望收益之间的差异来得到时间窗的收益风险;在此基础上根据期望—风险决策准则综合期望收益与收益风险得到在各个时间点的决策综合收益值,以此支持优化决策。以车货匹配决策问题为例进行决策分析与比较,证明了该决策模型能够有效应用于此类问题和实现更优决策。

关键词：决策支持模型匹配决策决策时间窗资源分布决策时间风险风险计算

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：