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Cryogenic minimum quantity lubrication machining: from mechanism to application
《机械工程前沿(英文)》 2021年 第16卷 第4期 页码 649-697 doi: 10.1007/s11465-021-0654-2
关键词: cryogenic minimum quantity lubrication (CMQL) cryogenic medium processing mode device application mechanism application effect
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0720-4
关键词: milling force nanofluid minimum quantity lubrication aerospace aluminum alloy nano biological lubricant
Iteration framework for solving mixed lubrication computation problems
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 635-648 doi: 10.1007/s11465-021-0632-8
关键词: mixed lubrication discretization formula relative error Reynolds equation asperity
A measurement system for thin elastohydrodynamic lubrication films
WANG Xuefeng, GUO Feng, YANG Peiran
《机械工程前沿(英文)》 2007年 第2卷 第2期 页码 193-196 doi: 10.1007/s11465-007-0032-8
关键词: instrumentation continuous measurement elastohydrodynamic lubrication ultra-thin measurement
曲庆文
《中国工程科学》 2005年 第7卷 第5期 页码 49-52
在等效粘度模型的基础上,考虑温度对润滑剂粘度的影响,建立了粘-温修正的等效粘度分析计算模型,并运用该模型进行薄膜润滑条件下的轴承性能分析计算,得到了不同参数下轴承性能的变化规律。
曲庆文,王梅,柴山,姚福生
《中国工程科学》 2001年 第3卷 第10期 页码 53-58
根据吸附理论和分子间能量的变化规律来确定表面相互作用程度,以此可定义吸附层,得出吸附层 厚度的分析计算式。吸附层厚度对研究薄膜润滑是最关键的因素,是薄膜与厚膜不同分析的关键点。根据分子 相互作用的基本理论及流体力学的基本定义得出指数型粘度修正的表达式,用于确定微小间隙内流体粘度的变 化规律,从而建立薄膜润滑理论模型,计算薄膜润滑轴承的特性。
《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
Integrated slipper retainer mechanism to eliminate slipper wear in high-speed axial piston pumps
《机械工程前沿(英文)》 doi: 10.1007/s11465-021-0657-z
关键词: axial piston pump high speed slipper wear slipper design retainer lubrication model
Influence of temperature on cam-tappet lubrication in an internal combustion engine
CHANG Qiuying, YANG Peiran, WANG Jing, CHEN Quanshi
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 489-492 doi: 10.1007/s11465-007-0085-8
关键词: coefficient combustion isothermal elastohydrodynamic temperature thickness
雒建斌,张朝辉,温诗铸
《中国工程科学》 2003年 第5卷 第7期 页码 84-89
薄膜润滑是20世纪90年代以来广泛研究的新型润滑状态。它是界于弹流润滑和边界润滑之间的一种过渡润滑状态,有着自己独特的润滑规律。文章回顾了薄膜润滑的研究历史,包括薄膜润滑概念的提出、测试技术的发展、薄膜润滑的膜厚特性、润滑机理探索以及计算理论等方面的研究成果与主要进展。
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《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 156-167 doi: 10.1007/s11465-014-0297-7
A fast compound direct iterative algorithm for solving transient line contact elastohydrodynamic lubrication (EHL) problems is presented. First, by introducing a special matrix splitting iteration method into the traditional compound direct iterative method, the full matrices for the linear systems of equations are transformed into sparse banded ones with any half-bandwidth; then, an extended Thomas method which can solve banded linear systems with any half-bandwidth is derived to accelerate the computing speed. Through the above two steps, the computational complexity of each iteration is reduced approximately from O(N3/3) to O(β2N), where N is the total number of nodes, and β is the half-bandwidth. Two kinds of numerical results of transient EHL line contact problems under sinusoidal excitation or pure normal approach process are obtained. The results demonstrate that the new algorithm increases computing speed several times more than the traditional compound direct iterative method with the same numerical precision. Also the results show that the new algorithm can get the best computing speed and robustness when the ratio, half-bandwidth to total number of nodes, is about 7.5%–10.0% in moderate load cases.
关键词: elastohydrodynamic lubrication transient line contact matrix splitting iteration method the Thomas method
Technological lubricating means: Evolution of materials and ideas
Vladimir A. GODLEVSKIY
《机械工程前沿(英文)》 2016年 第11卷 第1期 页码 101-107 doi: 10.1007/s11465-016-0369-y
The main stages of technological lubricating material development from ancient times to date are described. How the chemical composition of these products changed with time, how new ideas revealing the physical and chemical basics of external media that influence the mechanical processing of materials appeared, how these ideas explained the differences between traditional tribology and specific technology of metal processing are discussed. The question of the possible realization of Rehbinder’s adsorption effect in contact zone is also stated. The description of a very captivating problem is related to the explanation of the mechanism of lubricant penetration into the contact zone between the material being processed and the tool. The birth and development of the hypothesis of microcapillary penetration of the lubricant into the dynamically changed intersurface clearance that has finally led to formulating the “necessary kinetic condition of the lubricating activity” is relayed.
关键词: technological lubrication and cooling metal cutting grinding lubrication action tribology
Calculated journal bearing lubrication of non-Newtonian medium with surface roughness effects
CHEN Hao-sheng, CHEN Da-rong, WANG Jia-dao, LI Yong-jian
《机械工程前沿(英文)》 2006年 第1卷 第3期 页码 270-275 doi: 10.1007/s11465-006-0028-9
曲庆文,柴山,姚福生
《中国工程科学》 2003年 第5卷 第6期 页码 44-48
薄膜润滑轴承的特性远不同于常规轴承,在考虑间隙对润滑剂产生的影响后,润滑剂的特性将发生较大的变化。由于这种变化,薄膜润滑的特性才被广泛地研究和重视。文章应用等效粘度修正模型对径向滑动轴承进行了性能分析,对无限宽轴承可得出压力计算的解析表达式,从而可精确地计算轴承的性能。
曲庆文,王梅,陈海真,柴山,姚福生
《中国工程科学》 2002年 第4卷 第6期 页码 29-32
流体的流动状态将直接影响轴承的润滑特性,轴承的润滑特性主要由润滑剂的粘度决定。工作中润滑剂的粘度变化影响其运动速度的变化,从而影响润滑剂的温升及内剪切稀化的程度等。尤其在薄膜润滑中,润滑膜的厚度极小,润滑剂流体粒子间的相对运动速度增大,其润滑剂特性的变化更为突出。以连续变化的粘度修正模型来研究在微小间隙内润滑剂的速度特性,得出间隙内速度的分布规律,为研究薄膜流体温度场和剪切稀化问题提供计算数据。
标题 作者 时间 类型 操作
Mechanical behavior and semiempirical force model of aerospace aluminum alloy milling using nano biological
期刊论文
A measurement system for thin elastohydrodynamic lubrication films
WANG Xuefeng, GUO Feng, YANG Peiran
期刊论文
Tribological mechanism of carbon group nanofluids on grinding interface under minimum quantity lubrication
期刊论文
Integrated slipper retainer mechanism to eliminate slipper wear in high-speed axial piston pumps
期刊论文
Influence of temperature on cam-tappet lubrication in an internal combustion engine
CHANG Qiuying, YANG Peiran, WANG Jing, CHEN Quanshi
期刊论文
A fast compound direct iterative algorithm for solving transient line contact elastohydrodynamic lubrication
null
期刊论文
Calculated journal bearing lubrication of non-Newtonian medium with surface roughness effects
CHEN Hao-sheng, CHEN Da-rong, WANG Jia-dao, LI Yong-jian
期刊论文