The Experts below are selected from a list of 14886 Experts worldwide ranked by ideXlab platform
Xianzhu Wei - One of the best experts on this subject based on the ideXlab platform.
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investigation methods for analysis of transient phenomena concerning design and operation of Hydraulic Machine systems a review
Renewable & Sustainable Energy Reviews, 2019Co-Authors: Zhigang Zuo, Hongjie Wang, Shuhong Liu, Xianzhu WeiAbstract:Abstract Over the past decade, the use of conventional one-dimensional numerical-simulation methods has been demonstrated to be inadequate in terms of their usefulness in investigations concerning transient processes in Hydraulic Machines systems—their theoretical analyses and engineering applications. Consequently, numerous three-dimensional numerical methods capable of accurately simulating transient processes in Hydraulic-Machine systems have been proposed and improved upon in recent years. Through use of these novel methods and strategies, many researchers have investigated transient characteristics of processes occurring within Hydraulic-Machine systems along with corresponding formation mechanisms. This study presents a comprehensive review of related experimental studies, novel numerical methods and strategies along with transient characteristics and formation mechanisms in Hydraulic-Machine systems. Based on this study, suggestions have been made concerning the selection of simulation methods to be used and directions for future research have been proposed.
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Investigation methods for analysis of transient phenomena concerning design and operation of Hydraulic-Machine systems—A review
Renewable and Sustainable Energy Reviews, 2019Co-Authors: Zhigang Zuo, Hongjie Wang, Shuhong Liu, Xianzhu WeiAbstract:Abstract Over the past decade, the use of conventional one-dimensional numerical-simulation methods has been demonstrated to be inadequate in terms of their usefulness in investigations concerning transient processes in Hydraulic Machines systems—their theoretical analyses and engineering applications. Consequently, numerous three-dimensional numerical methods capable of accurately simulating transient processes in Hydraulic-Machine systems have been proposed and improved upon in recent years. Through use of these novel methods and strategies, many researchers have investigated transient characteristics of processes occurring within Hydraulic-Machine systems along with corresponding formation mechanisms. This study presents a comprehensive review of related experimental studies, novel numerical methods and strategies along with transient characteristics and formation mechanisms in Hydraulic-Machine systems. Based on this study, suggestions have been made concerning the selection of simulation methods to be used and directions for future research have been proposed.
Zhigang Zuo - One of the best experts on this subject based on the ideXlab platform.
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investigation methods for analysis of transient phenomena concerning design and operation of Hydraulic Machine systems a review
Renewable & Sustainable Energy Reviews, 2019Co-Authors: Zhigang Zuo, Hongjie Wang, Shuhong Liu, Xianzhu WeiAbstract:Abstract Over the past decade, the use of conventional one-dimensional numerical-simulation methods has been demonstrated to be inadequate in terms of their usefulness in investigations concerning transient processes in Hydraulic Machines systems—their theoretical analyses and engineering applications. Consequently, numerous three-dimensional numerical methods capable of accurately simulating transient processes in Hydraulic-Machine systems have been proposed and improved upon in recent years. Through use of these novel methods and strategies, many researchers have investigated transient characteristics of processes occurring within Hydraulic-Machine systems along with corresponding formation mechanisms. This study presents a comprehensive review of related experimental studies, novel numerical methods and strategies along with transient characteristics and formation mechanisms in Hydraulic-Machine systems. Based on this study, suggestions have been made concerning the selection of simulation methods to be used and directions for future research have been proposed.
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Investigation methods for analysis of transient phenomena concerning design and operation of Hydraulic-Machine systems—A review
Renewable and Sustainable Energy Reviews, 2019Co-Authors: Zhigang Zuo, Hongjie Wang, Shuhong Liu, Xianzhu WeiAbstract:Abstract Over the past decade, the use of conventional one-dimensional numerical-simulation methods has been demonstrated to be inadequate in terms of their usefulness in investigations concerning transient processes in Hydraulic Machines systems—their theoretical analyses and engineering applications. Consequently, numerous three-dimensional numerical methods capable of accurately simulating transient processes in Hydraulic-Machine systems have been proposed and improved upon in recent years. Through use of these novel methods and strategies, many researchers have investigated transient characteristics of processes occurring within Hydraulic-Machine systems along with corresponding formation mechanisms. This study presents a comprehensive review of related experimental studies, novel numerical methods and strategies along with transient characteristics and formation mechanisms in Hydraulic-Machine systems. Based on this study, suggestions have been made concerning the selection of simulation methods to be used and directions for future research have been proposed.
C. Bradai - One of the best experts on this subject based on the ideXlab platform.
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High-speed tensile tests on a polypropylene material
Polymer Testing, 2010Co-Authors: M. Zrida, Hervé Laurent, Gérard Rio, Vincent Grolleau, Khlif Mohammed, Dominique Guines, N. Masmoudi, C. BradaiAbstract:The mechanical behaviour of a copolymer polypropylene material (PPC7712) was studied under high strain rate tension loading conditions. For this purpose, a servo-Hydraulic Machine was equipped with a novel experimental device involving an original grip system. Stress-strain measurements were performed with strain gauges. The aim of the study was to determine the effects of the strain rate on the stress-strain behaviour, the tensile strength and the onset of the fracture process. Various strain rates ranging from 0.8 to 200 s!1 were tested. The tensile strength was found to increase with the strain rate. The strain rate dependent behaviour of the material was described using the phenomeno- logical Hyperelasto-Visco-Hysteresis model (HVH model) previously used with the results of quasi-static tensile tests on this material. The effects of the strain rate were given in this model by the changes in the viscous parameters.
Daniel Lebreton - One of the best experts on this subject based on the ideXlab platform.
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A modified servo-Hydraulic Machine for testing at intermediate strain-rates
International Journal of Impact Engineering, 2008Co-Authors: Ramzi Othman, Pierrick Gu'egan, Georges Challita, Franck Pasco, Daniel LebretonAbstract:Assessing the mechanical properties of materials at intermediate strain rates (1-200/s) is one of the major concerns in impact engineering. Servo-Hydraulic Machines are usually used at this range of strain rates. However, detrimental oscillations appear on the measured load for strain rates above 10/s. In this paper, we present a modified servo-Hydraulic Machine. The load is measured by a Hopkinson bar-like technique. Besides, the BCGO wave separation method is used to overcome the limited test duration problem. Moreover, the strain in the sample is measured using Digital Speckle Photographs (DSP) which is captured via high-speed video camera. This modified Machine is an equivalent and alternative solution to the slow bar technique. It is applied to aluminium 2017 T4 alloy at strain rates of approximately 100/s. Compared to the piezoelectric force sensor, the Hopkinson bar-like method gives less-oscillating signals. The sample attaching device is also taken into account. It is considered as a rigid mass. This simple assumption is valid up to strain rates of some hundreds per second.
Hongjie Wang - One of the best experts on this subject based on the ideXlab platform.
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investigation methods for analysis of transient phenomena concerning design and operation of Hydraulic Machine systems a review
Renewable & Sustainable Energy Reviews, 2019Co-Authors: Zhigang Zuo, Hongjie Wang, Shuhong Liu, Xianzhu WeiAbstract:Abstract Over the past decade, the use of conventional one-dimensional numerical-simulation methods has been demonstrated to be inadequate in terms of their usefulness in investigations concerning transient processes in Hydraulic Machines systems—their theoretical analyses and engineering applications. Consequently, numerous three-dimensional numerical methods capable of accurately simulating transient processes in Hydraulic-Machine systems have been proposed and improved upon in recent years. Through use of these novel methods and strategies, many researchers have investigated transient characteristics of processes occurring within Hydraulic-Machine systems along with corresponding formation mechanisms. This study presents a comprehensive review of related experimental studies, novel numerical methods and strategies along with transient characteristics and formation mechanisms in Hydraulic-Machine systems. Based on this study, suggestions have been made concerning the selection of simulation methods to be used and directions for future research have been proposed.
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Investigation methods for analysis of transient phenomena concerning design and operation of Hydraulic-Machine systems—A review
Renewable and Sustainable Energy Reviews, 2019Co-Authors: Zhigang Zuo, Hongjie Wang, Shuhong Liu, Xianzhu WeiAbstract:Abstract Over the past decade, the use of conventional one-dimensional numerical-simulation methods has been demonstrated to be inadequate in terms of their usefulness in investigations concerning transient processes in Hydraulic Machines systems—their theoretical analyses and engineering applications. Consequently, numerous three-dimensional numerical methods capable of accurately simulating transient processes in Hydraulic-Machine systems have been proposed and improved upon in recent years. Through use of these novel methods and strategies, many researchers have investigated transient characteristics of processes occurring within Hydraulic-Machine systems along with corresponding formation mechanisms. This study presents a comprehensive review of related experimental studies, novel numerical methods and strategies along with transient characteristics and formation mechanisms in Hydraulic-Machine systems. Based on this study, suggestions have been made concerning the selection of simulation methods to be used and directions for future research have been proposed.
