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Edge preparation methods for cutting tools: a review
《机械工程前沿(英文)》 2023年 第18卷 第4期 doi: 10.1007/s11465-023-0766-y
关键词: edge preparation method preparation principle cutting edge geometry edge characterization tool performance
Tianfeng ZHOU, Ying WANG, Benshuai RUAN, Zhiqiang LIANG, Xibin WANG
《机械工程前沿(英文)》 2020年 第15卷 第1期 页码 81-88 doi: 10.1007/s11465-019-0561-y
关键词: tool friction minimum cutting thickness finite element method tool edge radius micro cutting
Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)
Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA
《机械工程前沿(英文)》 2016年 第11卷 第1期 页码 44-59 doi: 10.1007/s11465-015-0360-z
During the second half of the twentieth century, Soviet scientists were among the world leaders in the theory and geometry of gearing or the theoretical fundamentals of designing gears and gear-cutting tools. The authors of the current paper review works related to the development of the theory of gearing (TG) written in Russian from the mid-1930s to the present. Overall, the review covers more than 400 publications of nearly 200 authors (among more than 1000 studied works). This review involves some works on gear strength and accuracy to attract more experts.
This paper presents a short list of works from the seventeenth century to the nineteenth century and discusses the basic concepts of the TG. This paper also includes a review of more than 160 papers in Russian for the period of 1935–1975, which is the “golden age” of the TG. The main features and achievements during this period are also considered.
The distinctive feature of this review is the use of diagrams that visually present TG experts and the dates and themes of their published works. The diagrams also show the following aspects: 1) The most popular and important themes in a specific period, 2) the most important publications on the themes of interest to readers, and 3) the direction of the works and scope of interests of every researcher.
关键词: theory of gearing (TG) gear geometry generating surface gear synthesis gear analysis
A new proof of Honeycomb Conjecture by fractal geometry methods
Tong ZHANG, Kai DING
《机械工程前沿(英文)》 2013年 第8卷 第4期 页码 367-370 doi: 10.1007/s11465-013-0273-7
Based on fractal geometry, we put forward a concise and straightforward method to prove Honeycomb Conjecture—a classical mathematic problem. Hexagon wins the most efficient covering unit in the two- dimensional space, compared with the other two covering units—triangle and square. From this point of view, honeycomb is treated as a hierarchical fractal structure that fully fills the plane. Therefore, the total side length and area are easily calculated and from the results, the covering efficiency of each possible unit is provided quantitatively.
关键词: Honeycomb Conjecture fractal geometry hierarchical fractal structure
Crystallographic orientation effect on cutting-based single atomic layer removal
Wenkun XIE, Fengzhou FANG
《机械工程前沿(英文)》 2020年 第15卷 第4期 页码 631-644 doi: 10.1007/s11465-020-0599-x
关键词: ACSM single atomic layer removal mechanism crystallographic orientation effect mechanical cutting Manufacturing III
Structural design of morphing trailing edge actuated by SMA
Qi WANG, Zhiwei XU, Qian ZHU
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 268-275 doi: 10.1007/s11465-013-0261-y
In this paper, the morphing trailing edge is designed to achieve the up and down deflection under the aerodynamic load. After a detailed and accurate computational analysis to determine the SMA specifications and layout programs, a solid model is created in CATIA and the structures of the morphing wing trailing edge are produced by CNC machining. A set of DSP measurement and control system is designed to accomplish the controlling experiment of the morphing wing trailing edge. At last, via the force analysis, the trailing edge is fabricated with four sections of aluminum alloy, and the arrangement scheme of SMA wires is determined. Experiment of precise control integral has been performed to survey the control effect. The experiment consists of deflection angle tests of the third joint and the integral structure. Primarily, the ultimate deflection angle is tested in these two experiments. Therefore, the controlling experiment of different angles could be performed within this range. The results show that the deflection error is less than 4% and response time is less than 6.7 s, the precise controlling of the morphing trailing edge is preliminary realized.
关键词: morphing wing trailing edge shape memory alloy digital signal processor PID algorithm
WU Hongchun, LIU Pingping, ZHOU Yongqiang, CAO Liangzhi
《能源前沿(英文)》 2007年 第1卷 第2期 页码 158-166 doi: 10.1007/s11708-007-0020-z
关键词: unstructured geometry assembly transmission probability TPM rectangular
Frequencies of circular plate with concentric ring and elastic edge support
null
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 168-176 doi: 10.1007/s11465-014-0299-5
Exact solutions for the flexural vibrations of circular plates having elastic edge conditions along with rigid concentric ring support have been presented in this paper. Values of frequency parameter for the considered circular plate are computed for different sets of values of elastic rotational and translation restraints and the radius of internal rigid ring support. The results for the first three modes of plate vibrations are computed and are presented in tabular form. The effects of rotational and linear restraints and the radius of the rigid ring support on the vibration behavior of circular plates are studied over a wide range of non-dimensional parametric values. The values of the exact frequency parameter presented in this paper for varying values of restraint parameters and the radius of the rigid ring support can better serve in design and as benchmark solutions to validate the numerical methods obtained by using other methods of solution.
关键词: circular plate frequency elastic edge rigid ring mode switching
Knife-edge technique for laser cooling
WANG Zhanshan, MA Shanshan, MA Yan, ZHAO Min, LIU Hengbiao
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 468-473 doi: 10.1007/s11465-007-0081-z
关键词: knife-edge technique uniformity coupled transfer fluorescent
刘雪峰,刘昌胜,谢建新
《中国工程科学》 2022年 第24卷 第2期 页码 29-37 doi: 10.15302/J-SSCAE-2022.02.006
本文重点分析了面向类脑智能、人工智能、深空探测、网络安全、高效能量转化等尖端科技领域中前沿新材料产业的基础能力现状与问题。面向2025年、 2035年的阶段性发展规划,从提升前沿新材料产业科技创新基础能力、支撑保障基础能力、竞争基础能力、可持续发展基础能力、基础设施建设水平以及改善产业生态环境等方面提出了我国前沿新材料产业基础能力的发展目标与发展战略。为满足新一轮科技革命和产业变革对前沿新材料的需求,从材料基因工程提升前沿新材料产业基础能力、双循环新发展格局下前沿新材料产业布局、碳达峰与碳中和发展战略下的前沿新材料产业布局,自主可控的前沿新材料测试表征能力建设等方面提出了发展建议。
A review on ductile mode cutting of brittle materials
Elijah Kwabena ANTWI, Kui LIU, Hao WANG
《机械工程前沿(英文)》 2018年 第13卷 第2期 页码 251-263 doi: 10.1007/s11465-018-0504-z
Brittle materials have been widely employed for industrial applications due to their excellent mecha-nical, optical, physical and chemical properties. But obtaining smooth and damage-free surface on brittle materials by traditional machining methods like grinding, lapping and polishing is very costly and extremely time consuming. Ductile mode cutting is a very promising way to achieve high quality and crack-free surfaces of brittle materials. Thus the study of ductile mode cutting of brittle materials has been attracting more and more efforts. This paper provides an overview of ductile mode cutting of brittle materials including ductile nature and plasticity of brittle materials, cutting mechanism, cutting characteristics, molecular dynamic simulation, critical undeformed chip thickness, brittle-ductile transition, subsurface damage, as well as a detailed discussion of ductile mode cutting enhancement. It is believed that ductile mode cutting of brittle materials could be achieved when both crack-free and no subsurface damage are obtained simultaneously.
关键词: ductile mode cutting brittle materials critical undeformed chip thickness brittle-ductile transition subsurface damage molecular dynamic simulation
Cutting performance of surgical electrodes by constructing bionic microstriped structures
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0728-9
关键词: surgical electrodes tissue adhesion thermal injury bionic structures cutting performance medical tools
Real-time task processing method based on edge computing for spinning CPS
Shiyong YIN, Jinsong BAO, Jie LI, Jie ZHANG
《机械工程前沿(英文)》 2019年 第14卷 第3期 页码 320-331 doi: 10.1007/s11465-019-0542-1
洪学海,汪洋
《中国工程科学》 2018年 第20卷 第2期 页码 20-26 doi: 10.15302/J-SSCAE-2018.02.004
边缘计算是一项正在兴起的技术,通过把计算、存储、带宽、应用等资源放在网络的边缘侧,以便减小传输延迟和带宽消耗。同时,应用开发者和内容提供商可以根据实时的网络信息提供可感知的服务。移动终端、物联网等设备为计算敏感型的应用提供了必要的前端处理支撑,例如图像识别、网络游戏等应用,以利用边缘计算的处理能力分担云端工作负荷。本文介绍了边缘计算的概念、需解决的关键问题、主要研究进展,边缘计算发展带来的影响以及边缘计算带来的机遇和发展对策。
Aswathy Vasudevan, Vasyl Shvalya, Aleksander Zidanšek, Uroš Cvelbar
《化学科学与工程前沿(英文)》 2019年 第13卷 第3期 页码 427-443 doi: 10.1007/s11705-019-1805-4
关键词: graphene edge electronics 2D nanomaterials plasma electrical conductivity
标题 作者 时间 类型 操作
Modeling of the minimum cutting thickness in micro cutting with consideration of the friction aroundthe cutting zone
Tianfeng ZHOU, Ying WANG, Benshuai RUAN, Zhiqiang LIANG, Xibin WANG
期刊论文
Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)
Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA
期刊论文
Crystallographic orientation effect on cutting-based single atomic layer removal
Wenkun XIE, Fengzhou FANG
期刊论文
Transmission probability method based on triangle meshes for solving the unstructured geometry neutron
WU Hongchun, LIU Pingping, ZHOU Yongqiang, CAO Liangzhi
期刊论文
Knife-edge technique for laser cooling
WANG Zhanshan, MA Shanshan, MA Yan, ZHAO Min, LIU Hengbiao
期刊论文
Real-time task processing method based on edge computing for spinning CPS
Shiyong YIN, Jinsong BAO, Jie LI, Jie ZHANG
期刊论文