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Surinder Kumar GILL, Meenu GUPTA, P. S. SATSANGI
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 187-200 doi: 10.1007/s11465-013-0262-x
Machining of plastic materials has become increasingly important in any engineering industry subsequently the prediction of cutting forces. Forces quality has greater influence on components, which are coming in contact with each other. So it becomes necessary to measure and study machined forces and its behavior. In this research work, experimental investigations are conducted to determine the effects of cutting conditions and tool geometry on the cutting forces in the turning of the unidirectional glass fiber reinforced plastics (UD-GFRP) composites. In this experimental study, carbide tool (K10) having different tool nose radius and tool rake angle is used. Experiments are conducted based on the established Taguchi’s technique L18 orthogonal array on a lathe machine. It is found that the depth of cut is the cutting parameter, which has greater influence on cutting forces. The effect of the tool nose radius and tool rake angles on the cutting forces are also considerably significant. Based on statistical analysis, multiple regression model for cutting forces is derived with satisfactory coefficient (R2). This model proved to be highly preferment for predicting cutting forces.
关键词: unidirectional glass fiber reinforced plastics (UD-GFRP) composites machining cutting forces (tangential feed and radial force) ANOVA regression modeling carbide tool (K10)
Prediction of cutting force in turning of UD-GFRP using mathematical model and simulated annealing
Meenu GUPTA, Surinder Kumar GILL
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 417-426 doi: 10.1007/s11465-012-0343-2
Glass fiber reinforced plastics (GFRPs) composite is considered to be an alternative to heavy exortic materials. According to the need for accurate machining of composites has increased enormously. During machining, the obtaining cutting force is an important aspect. The present investigation deals with the study and development of a cutting force prediction model for the machining of unidirectional glass fiber reinforced plastics (UD-GFRP) composite using regression modeling and optimization by simulated annealing. The process parameters considered include cutting speed, feed rate and depth of cut. The predicted values radial cutting force model is compared with the experimental values. The results of prediction are quite close with the experimental values. The influences of different parameters in machining of UD-GFRP composite have been analyzed.
关键词: UD-GFRP ANOVA radial cutting force PCD tool Taguchi method regression analysis simulated annealing multi objective techniques
Shoujun CHEN, Qiang LI, Qi AN,
《机械工程前沿(英文)》 2010年 第5卷 第3期 页码 302-307 doi: 10.1007/s11465-010-0018-9
关键词: conic threaded connections interference fit radial stress deformation finite element analysis (FEA)
Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang
《化学科学与工程前沿(英文)》 2020年 第14卷 第2期 页码 248-257 doi: 10.1007/s11705-019-1853-9
关键词: hierarchical ZSM-5 zeolite protective desilication piperidine radial mesopores benzene alkylation
Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration
《机械工程前沿(英文)》 2022年 第17卷 第1期 页码 8-8 doi: 10.1007/s11465-021-0664-0
关键词: leg–arm integration hexapod robot fixed coordinated manipulation mobile manipulation
Identification of thermal error in a feed system based on multi-class LS-SVM
Chao JIN, Bo WU, Youmin HU, Yao CHENG
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 47-54 doi: 10.1007/s11465-012-0307-6
Research of thermal characteristics has been a key issue in the development of high-speed feed system. The thermal positioning error of a ball-screw is one of the most important objects to consider for high-accuracy and high-speed machine tools. The research work undertaken herein ultimately aims at the development of a comprehensive thermal error identification model with high accuracy and robust. Using multi-class least squares support vector machines (LS-SVM), the thermal positioning error of the feed system is identified with the variance and mean square value of the temperatures of supporting bearings and screw-nut as feature vector. A series of experiments were carried out on a self-made quasi high-speed feed system experimental bench HUST-FS-001 to verify the identification capacity of the presented method. The results show that the recommended model can be used to predict the thermal error of a feed system with good accuracy, which is better than the ordinary BP and RBF neural network. The work described in this paper lays a solid foundation of thermal error prediction and compensation in a feed system.
关键词: least squares support vector machine (LS-SVM) feed system thermal error precision machining
Comparison of optimal capacitor placement methods in radial distribution system with load growth and
Veera Venkata Satya Naryana MURTY, Ashwani KUMAR
《能源前沿(英文)》 2013年 第7卷 第2期 页码 197-213 doi: 10.1007/s11708-013-0249-7
关键词: load growth load models reactive power compensation radial distribution system power loss index (PLI) power loss sensitivity (PLS) index vector (IV)
A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot
Kejia LI, Xilun DING, Marco CECCARELL
《机械工程前沿(英文)》 2012年 第7卷 第2期 页码 219-230 doi: 10.1007/s11465-012-0320-9
This article focuses on the dynamic index and performance of a radial symmetric six-legged robot. At first the structure of the robot is described in brief and its inverse kinematics is presented. Then the dynamic model is formulated as based on the Lagrange equations. A novel index of total torque is proposed by considering the posture of the supporting legs. The new index can be used to optimize the leg’s structure and operation for consuming minimum power and avoiding unstable postures of the robot. A characterization of the proposed six-legged robot is obtained by a parametric analysis of robot performance through simulation using the presented dynamic model. Main influences are outlined as well as the usefulness of the proposed performance index.
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1453-1479 doi: 10.1007/s11709-021-0767-z
关键词: damage detection deep feed-forward neural networks functionally graded carbon nanotube-reinforced composite plates modal kinetic energy
Modeling limit force capacities of high force to volume lead extrusion dampers
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 609-622 doi: 10.1007/s11709-021-0724-x
关键词: extrusion lead dampers upper and lower bound analytical modelling limit force
An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural
P. ZAKIAN
《结构与土木工程前沿(英文)》 2017年 第11卷 第4期 页码 470-479 doi: 10.1007/s11709-017-0440-8
关键词: stochastic analysis random seismic excitation finite element method artificial neural network frequency domain analysis Monte Carlo simulation
《机械工程前沿(英文)》 2023年 第18卷 第3期 doi: 10.1007/s11465-023-0763-1
关键词: UVSRR system radial electromagnetic type vibration suppression performance simulation engineering application
INTERCROPPING: FEED MORE PEOPLE AND BUILD MORE SUSTAINABLE AGROECOSYSTEMS
《农业科学与工程前沿(英文)》 2021年 第8卷 第3期 页码 373-386 doi: 10.15302/J-FASE -2021398
Intercropping is a traditional farming system that increases crop diversity to strengthen agroecosystem functions while decreasing chemical inputs and minimizing negative environmental effects of crop production. Intercropping is currently considerable interest because of its importance in sustainable agriculture. Here, we synthesize the factors that make intercropping a sustainable means of food production by integrating biodiversity of natural ecosystems and crop diversity. In addition to well-known yield increases, intercropping can also increase yield stability over the long term and increase systemic resistance to plant diseases, pests and other unfavorable factors (e.g. nutrient deficiencies). The efficient use of resources can save mineral fertilizer inputs, reduce environmental pollution risks and greenhouse gas emissions caused by agriculture, thus mitigating global climate change. Intercropping potentially increases above- and below-ground biodiversity of various taxa at field scale, consequently it enhances ecosystem services. Complementarity and selection effects allow a better understanding the mechanisms behind enhanced ecosystem functioning. The development of mechanization is essential for large-scale application of intercropping. Agroecosystem multifunctionality and soil health should be priority topics in future research on intercropping.
关键词: agroecosystems , crop diversity ,intercropping,interspecific interactions,sustainable agriculture
Practical consideration for design and optimization of the step feed process
Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG
《环境科学与工程前沿(英文)》 2013年 第7卷 第1期 页码 135-142 doi: 10.1007/s11783-012-0454-3
关键词: step feed anoxic/oxic (A/O) University of Cape Town (UCT) simultaneous nitrification and denitrification (SND) denitrifying phosphorus removal biological nutrient removal (BNR)
Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG
《机械工程前沿(英文)》 2011年 第6卷 第4期 页码 463-467 doi: 10.1007/s11465-011-0225-z
The shield machine is a heavy construction machine for tunnel excavation, and the segment erector is an important subsystem of the shield machine. It is difficult to achieve precise control in the 6-DOF (degree of freedom) erector in the 2-DOF 5-bar radial mechanism. Hence, this paper proposes a redundantly actuated PRPRP radial mechanism for the segment erector. When the redundant actuator is unlocked, the radial mechanism is able to adjust its posture, which has two degrees of freedom. On the other hand, when the redundant actuator is locked or produces enough pre-tightening tensile force, the PRPRP mechanism can ensure the synchronization of the two driving hydraulic cylinders along the radial direction based on the mechanical structure, which has one degree of freedom. The redundant actuator also facilitates the equal application of two flexural torques at the hydraulic cylinders; thus, preventing the overload of a single cylinder.
关键词: redundant actuation parallel mechanisms five-bar mechanisms segment erectors shield machines
标题 作者 时间 类型 操作
Prediction of cutting forces in machining of unidirectional glass fiber reinforced plastics composite
Surinder Kumar GILL, Meenu GUPTA, P. S. SATSANGI
期刊论文
Prediction of cutting force in turning of UD-GFRP using mathematical model and simulated annealing
Meenu GUPTA, Surinder Kumar GILL
期刊论文
Calculation method of radial stress and deformation on conic threaded connections with interference fit
Shoujun CHEN, Qiang LI, Qi AN,
期刊论文
Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for
Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang
期刊论文
Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration
期刊论文
Identification of thermal error in a feed system based on multi-class LS-SVM
Chao JIN, Bo WU, Youmin HU, Yao CHENG
期刊论文
Comparison of optimal capacitor placement methods in radial distribution system with load growth and
Veera Venkata Satya Naryana MURTY, Ashwani KUMAR
期刊论文
A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot
Kejia LI, Xilun DING, Marco CECCARELL
期刊论文
A deep feed-forward neural network for damage detection in functionally graded carbon nanotube-reinforced
期刊论文
An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural
P. ZAKIAN
期刊论文
Radial electromagnetic type unbalance vibration self-recovery regulation system for high-end grinding
期刊论文
Practical consideration for design and optimization of the step feed process
Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG
期刊论文