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Numerical analysis of hydrodynamic process of circular-translational-moving polishing (CTMP)
ZHAI Wenjie, LIU Changxiong, LIANG Yingchun
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 441-448 doi: 10.1007/s11465-008-0074-6
关键词: numerical analysis practical CTMP circular-translational-moving polishing CTMP different
黄亦申,许雪峰,姚春燕,胡建德,彭伟
《中国工程科学》 2012年 第14卷 第10期 页码 82-89
研究苯代三聚氰胺甲醛(BGF)微球与阳离子型聚电解质聚二烯丙基二甲基氯化铵(PDADMAC)、阴离子型聚电解质聚4-苯乙烯璜酸钠(PSS)之间的吸附特性,利用静电自组装技术改变和控制BGF微球的荷电特性,制备出不同形式的PEi BGF/SiO2复合磨粒,以Zeta电位、透射电子显微镜(TEM)和热重分析(TG)等手段对复合磨粒进行了表征,并利用这些复合磨粒制备了铜片抛光用的复合磨粒抛光液。抛光试验表明,吸附在聚合物微球表面和游离于抛光液中的SiO2磨粒在抛光中均起到材料去除作用。传统单一SiO2磨粒抛光液的铜材料去除率为264 nm/min,PE0 BGF/SiO2混合磨粒抛光液的铜材料去除率为348 nm/min,PE3 BGF/SiO2复合磨粒抛光液的铜材料去除率为476 nm/min。经上述3种抛光液抛光后的铜表面,在5 μm×5 μm范围内,表面粗糙度Ra从0.166 μm分别降至3.7 nm、2.6 nm和1.5 nm,峰谷值Rpv分别小于20 nm、14 nm和10 nm,复合磨粒抛光液对铜片有良好的抛光性能。
Review on mechanism and process of surface polishing using lasers
Arun KRISHNAN, Fengzhou FANG
《机械工程前沿(英文)》 2019年 第14卷 第3期 页码 299-319 doi: 10.1007/s11465-019-0535-0
关键词: laser polishing surface roughness process parameters mechanism
Error analysis and optimization of a 3-degree of freedom translational Parallel Kinematic Machine
null
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 120-129 doi: 10.1007/s11465-014-0300-3
In this paper, error modeling and analysis of a typical 3-degree of freedom translational Parallel Kinematic Machine is presented. This mechanism provides translational motion along the Cartesian X-, Y- and Z- axes. It consists of three limbs each having an arm and forearm with prismatic-revolute-revolute-revolute joints. The moving or tool platform maintains same orientation in the entire workspace due to its joint arrangement. From inverse kinematics, the joint angles for a given position of tool platform necessary for the error modeling and analysis are obtained. Error modeling is done based on the differentiation of the inverse kinematic equations. Variation of pose errors along X, Y and Z directions for a set of dimensions of the parallel kinematic machine is presented. A non-dimensional performance index, namely, global error transformation index is used to study the influence of dimensions and its corresponding global maximum pose error is reported. An attempt is made to find the optimal dimensions of the Parallel Kinematic Machine using Genetic Algorithms in MATLAB. The methodology presented and the results obtained are useful for predicting the performance capability of the Parallel Kinematic Machine under study.
关键词: translational Parallel Kinematic Machine error modeling global error transformation index
Advances in polishing of internal structures on parts made by laser-based powder bed fusion
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0724-0
关键词: laser-based powder bed fusion polishing internal structures surface quality surface features post process additive manufacturing
Zhuchao YE, Huaihai CHEN,
《机械工程前沿(英文)》 2009年 第4卷 第4期 页码 397-400 doi: 10.1007/s11465-009-0044-7
关键词: simply supported beam moving mass (MM) transverse vibration moving finite element (MFE)
《医学前沿(英文)》 2022年 第16卷 第4期 页码 551-573 doi: 10.1007/s11684-022-0928-z
关键词: HCC bone osteotropism clinical basic researches advances
Ziyuan LIU, Hang GAO, Dongming GUO
《机械工程前沿(英文)》 2020年 第15卷 第2期 页码 294-302 doi: 10.1007/s11465-019-0576-4
关键词: potassium dihydrogen phosphate (KDP) crystal controllable deliquescence two-phase air–water fluid high-efficiency polishing material removal
Dynamic prediction of moving trajectory in pipe jacking: GRU-based deep learning framework
《结构与土木工程前沿(英文)》 页码 994-1010 doi: 10.1007/s11709-023-0942-5
关键词: dynamic prediction moving trajectory pipe jacking GRU deep learning
Stiffness of a 3-degree of freedom translational parallel kinematic machine
null
《机械工程前沿(英文)》 2014年 第9卷 第3期 页码 233-241 doi: 10.1007/s11465-014-0312-z
In this paper, a typical 3-degree of freedom (3-DOF) translational parallel kinematic machine (PKM) is studied and analyzed whose tool platform has only translations along X-, Y- and Z-axes. It consists of three limbs, each of which have arm and forearm with prismatic-revolute-revolute-revolute (PRRR) joints. Inverse kinematics analysis is carried out to find the slider coordinates and joint angles for a given position of tool platform. Stiffness modeling is done based on the compliance matrices of arm and forearm of each limb. Using the stiffness modeling the variations of minimum and maximum translational stiffness in the workspace are analyzed. For various architectural parameters of the 3-DOF PKM the tendency of variations on the minimum and maximum stiffness over the entire workspace is studied; and also the deflections of the tool platform along X, Y, and Z directions with respect to various forces are presented.
关键词: 3-DOF translational PKM inverse kinematics stiffness modeling translational stiffness
Conceptual design of compliant translational joints for high-precision applications
Guangbo HAO,Haiyang LI,Xiuyun HE,Xianwen KONG
《机械工程前沿(英文)》 2014年 第9卷 第4期 页码 331-343 doi: 10.1007/s11465-014-0321-y
Compliant translational joints (CTJs) have been extensively used in precision engineering and microelectromechanical systems (MEMS). There is an increasing need for designing higher-performance CTJs. This paper deals with the conceptual design of CTJs via three approaches: parallelogram based method, straight-line motion mechanism based method and combination based method. Typical emerging CTJ designs are reviewed by explaining their design principles and qualitatively analyzing their characteristics. New CTJs are proposed using three approaches, including an asymmetric double parallelogram mechanism with slaving mechanism, several compact and symmetric double parallelogram mechanisms with slaving mechanisms and a general CTJ using the center drift compensation and a CTJ using Roberts linkage and several combination designs. This paper provides an overview of the current advances/progresses of CTJ designs and lays the foundation for further optimization, quantitative analysis and characteristic comparisons.
关键词: compliant mechanisms translational joints conceptual design parallelogram straight-line motion combination method
Dendritic cell vaccines in cancer immunotherapy: from biology to translational medicine
Hongmei Xu, Xuetao Cao
《医学前沿(英文)》 2011年 第5卷 第4期 页码 323-332 doi: 10.1007/s11684-011-0172-4
《机械工程前沿(英文)》 2021年 第16卷 第4期 页码 765-781 doi: 10.1007/s11465-021-0655-1
关键词: generalized parallel mechanism configurable moving platform gripper mechanism type synthesis kinematic analysis
LEVERAGING LIVESTOCK TO PROMOTE A CIRCULAR FOOD SYSTEM
Zhengxia DOU
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期 页码 188-192 doi: 10.15302/J-FASE-2020370
Multi-harmonic forced vibration and resonance of simple beams to moving vehicles
《结构与土木工程前沿(英文)》 页码 981-993 doi: 10.1007/s11709-023-0979-5
关键词: forced vibration linear Euler beam moving load harmonic structure frequency modulation end restraints
标题 作者 时间 类型 操作
Numerical analysis of hydrodynamic process of circular-translational-moving polishing (CTMP)
ZHAI Wenjie, LIU Changxiong, LIANG Yingchun
期刊论文
Error analysis and optimization of a 3-degree of freedom translational Parallel Kinematic Machine
null
期刊论文
Vibration analysis of a simply supported beam under moving mass based on moving finite element method
Zhuchao YE, Huaihai CHEN,
期刊论文
Bone metastasis of hepatocellular carcinoma: facts and hopes from clinical and translational perspectives
期刊论文
Experimental study on high-efficiency polishing for potassium dihydrogen phosphate (KDP) crystal by using
Ziyuan LIU, Hang GAO, Dongming GUO
期刊论文
Conceptual design of compliant translational joints for high-precision applications
Guangbo HAO,Haiyang LI,Xiuyun HE,Xianwen KONG
期刊论文
Dendritic cell vaccines in cancer immunotherapy: from biology to translational medicine
Hongmei Xu, Xuetao Cao
期刊论文
Design and analysis of the gripper mechanism based on generalized parallel mechanisms with configurable moving
期刊论文