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Modelling of dynamic contact length in rail grinding process
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《机械工程前沿(英文)》 2014年 第9卷 第3期 页码 242-248 doi: 10.1007/s11465-014-0305-y
Rails endure frequent dynamic loads from the passing trains for supporting trains and guiding wheels. The accumulated stress concentrations will cause the plastic deformation of rail towards generating corrugations, contact fatigue cracks and also other defects, resulting in more dangerous status even the derailment risks. So the rail grinding technology has been invented with rotating grinding stones pressed on the rail with defects removal. Such rail grinding works are directed by experiences rather than scientifically guidance, lacking of flexible and scientific operating methods. With grinding control unit holding the grinding stones, the rail grinding process has the characteristics not only the surface grinding but also the running railway vehicles. First of all, it’s important to analyze the contact length between the grinding stone and the rail, because the contact length is a critical parameter to measure the grinding capabilities of stones. Moreover, it’s needed to build up models of railway vehicle unit bonded with the grinding stone to represent the rail grinding car. Therefore the theoretical model for contact length is developed based on the geometrical analysis. And the calculating models are improved considering the grinding car’s dynamic behaviors during the grinding process. Eventually, results are obtained based on the models by taking both the operation parameters and the structure parameters into the calculation, which are suitable for revealing the process of rail grinding by combining the grinding mechanism and the railway vehicle systems.
关键词: rail grinding contact length dynamic model Hamiltonian system grinding stone rail grinding car
Model test of stone columns as liquefaction countermeasure in sandy soils
Mengfei QU,Qiang XIE,Xinwen CAO,Wen ZHAO,Jianjun HE,Jiang JIN
《结构与土木工程前沿(英文)》 2016年 第10卷 第4期 页码 481-487 doi: 10.1007/s11709-016-0355-9
关键词: stone column composite foundation seismic liquefaction shaking table test
Subsurface damage pattern and formation mechanism of monocrystalline -GaO in grinding process
《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-022-0677-3
关键词: monocrystalline beta-phase gallium oxide grinding process subsurface damage nanocrystals amorphous phase
Simulation and analysis of grinding wheel based on Gaussian mixture model
Yulun CHI, Haolin LI
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 427-432 doi: 10.1007/s11465-012-0350-3
This article presents an application of numerical simulation technique for the generation and analysis of the grinding wheel surface topographies. The ZETA 20 imaging and metrology microscope is employed to measure the surface topographies. The Gaussian mixture model (GMM) is used to transform the measured non-Gaussian field to Gaussian fields, and the simulated topographies are generated. Some numerical examples are used to illustrate the viability of the method. It shows that the simulated grinding wheel topographies are similar with the measured and can be effective used to study the abrasive grains and grinding mechanism.
关键词: grinding wheel 3D topographies measurement Gaussian mixture model simulation
Investigation on drilling-grinding of CFRP
Yanming QUAN, Wenwang ZHONG
《机械工程前沿(英文)》 2009年 第4卷 第1期 页码 60-63 doi: 10.1007/s11465-009-0008-y
关键词: composites drilling-grinding cemented/plated diamond tool life machined quality
Machinability of ultrasonic vibration-assisted micro-grinding in biological bone using nanolubricant
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0717-z
关键词: micro-grinding biological bone ultrasonic vibration (UV) nanoparticle jet mist cooling (NJMC) grinding force grinding temperature
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0730-2
关键词: ultrasonic vibration-assisted grinding perforated ultrasonic vibration platform vibration characteristics apparent elasticity method grinding force surface integrity
Fiber-reinforced composites in milling and grinding: machining bottlenecks and advanced strategies
《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-022-0680-8
关键词: milling grinding fiber-reinforced composites damage formation mechanism delamination material removal mechanism surface integrity minimum quantity lubrication
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0733-z
关键词: grinding minimum quantity lubrication carbon group nanofluid tribological mechanism
Effects of taping on grinding quality of silicon wafers in backgrinding
Zhigang DONG, Qian ZHANG, Haijun LIU, Renke KANG, Shang GAO
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 559-569 doi: 10.1007/s11465-020-0624-0
关键词: taping silicon wafer backgrinding subsurface damage surface roughness
Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0719-x
关键词: grinding aerospace difficult-to-machine material biolubricant physicochemical property grindability
Recognition of diamond grains on surface of fine diamond grinding wheel
HUO Fengwei, JIN Zhuji, KANG Renke, GUO Dongming, YANG Chun
《机械工程前沿(英文)》 2008年 第3卷 第3期 页码 325-331 doi: 10.1007/s11465-008-0071-9
关键词: topography frequency disturbance filtering analysis wavelength
Ultra-precision ductile grinding of BK7 using super abrasive diamond wheel
ZHAO Qingliang, Brinksmeier Ekkard, Riemer Oltmann, Rickens Kai
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 350-355 doi: 10.1007/s11465-007-0061-3
关键词: ELID peripheral electrolytic in-process nickel-electroplated monolayer measurement
Determination of the scheme of precision grinding compensation on the radome
GUO Dongming, LIU Minjing, ZHANG Chunbo, SHENG Xianjun, SUN Yuwen
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 263-266 doi: 10.1007/s11465-007-0045-3
关键词: mathematical effective approach experimental measurement antenna electromagnetic
宋健
《中国工程科学》 2002年 第4卷 第10期 页码 1-10
在人类历史长河中,特别是工业革命以来的近300年中,制造业的出现和工业化对人类文明进步具有决定性的意义。文章对制造业历史地位、现在的形势和未来发展趋势,做了科学分析。阐述了制造业,特别是装备制造业是工业化的中心,技术进步的主要舞台,国民经济持续发展的基础,是增强国际竞争力的关键因素和国防安全的保障。与发达国家相比,中国的工业化还有很大差距。在现存的不平等、不合理的世界秩序中,没有自己强大的制造业,要实现工业化和现代化是不可能的。实现工业、农业、服务业的机械化、自动化、信息化和智能化,是21世纪我国制造业肩负的重大使命和艰巨任务,必须采取一切可能的措施,在对外开放的环境中,建立起先进、强大的中国制造业。
标题 作者 时间 类型 操作
Model test of stone columns as liquefaction countermeasure in sandy soils
Mengfei QU,Qiang XIE,Xinwen CAO,Wen ZHAO,Jianjun HE,Jiang JIN
期刊论文
Machinability of ultrasonic vibration-assisted micro-grinding in biological bone using nanolubricant
期刊论文
characteristics and machining performance of a novel perforated ultrasonic vibration platform in the grinding
期刊论文
Fiber-reinforced composites in milling and grinding: machining bottlenecks and advanced strategies
期刊论文
Tribological mechanism of carbon group nanofluids on grinding interface under minimum quantity lubrication
期刊论文
Effects of taping on grinding quality of silicon wafers in backgrinding
Zhigang DONG, Qian ZHANG, Haijun LIU, Renke KANG, Shang GAO
期刊论文
Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy
期刊论文
Recognition of diamond grains on surface of fine diamond grinding wheel
HUO Fengwei, JIN Zhuji, KANG Renke, GUO Dongming, YANG Chun
期刊论文
Ultra-precision ductile grinding of BK7 using super abrasive diamond wheel
ZHAO Qingliang, Brinksmeier Ekkard, Riemer Oltmann, Rickens Kai
期刊论文
Determination of the scheme of precision grinding compensation on the radome
GUO Dongming, LIU Minjing, ZHANG Chunbo, SHENG Xianjun, SUN Yuwen
期刊论文