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Numerical simulation and experimental research on the wheel brush sampling process of an asteroid sampler

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0732-0

Abstract: contact dynamics model between particles and sampling wheel brushes is established and a simulation and experimentalThis research proposes the structural optimization design and motor selection of a wheel brush asteroid

Keywords： asteroid sampling     wheel brush sampler     discrete element method     parameter calibration     experimentalresearch    

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Experimental research on cyclone performance at high temperature

LI Wenqi, CHEN Jianyi

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 310-317 doi: 10.1007/s11465-007-0055-1

Abstract: To predict the influence of operating temperatures on cyclone performance, an experimental investigationA nondimensional experimental correlation of the cyclone performance, including the influence of temperatureinfluence of temperature on separation efficiencies and pressure drops is in fairly good agreement with experimental

Keywords： diameter     definite function     nondimensional experimental     cyclone performance     influence    

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THAI experimental research on hydrogen risk and source term related safety systems

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 887-915 doi: 10.1007/s11708-021-0789-1

Abstract: In the defense-in-depth concept employed for the safety of nuclear installations, maintaining integrity of containment as the last barrier is of high importance to limit the release of radioactivity to the environment in case of a severe accident. The active and passive safety systems implemented in containments of light water reactors (LWRs) are designed to limit the consequences of such accidents. Assessing the performance and reliability of such systems under accident conditions is critical to the safety of nuclear installations.

Keywords： severe accident     containment     safety     mitigation     H2 risk     source term    

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Experimental research on compaction characteristics of aeolian sand

YUAN Yuqing, WANG Xuancang, ZHOU Xin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 359-365 doi: 10.1007/s11709-008-0053-3

Abstract: Unlike other road materials, aeolian sand has some compaction characteristics that are key factors in construction qualities of highway in the desert. In order to study the characteristics, a series of laboratory and field tests were performed, including sieve analysis, standard modified compaction, vibrating compaction and field test. By analyzing the sieve analysis test data, it was found that the gradation of aeolian sand was bad, with fine grains whose diameters mostly ranged from 0.25 mm to 0.074 mm. Then, from the laboratory compaction test results, a compaction curve similar to the horizontally-written letter S was obtained. That was quite different from the other kinds of road materials. There were two peak values in the curve with the increase of water content, which was the special characteristic of aeolian sand: to be well compacted whether it was dry or wet. Also, according to laboratory vibrating test results, the best vibrating frequency range was proposed. It was from 45 Hz to 50 Hz. Moreover, some field compaction tests were carried out. On the construction site of the highway, the aeolian sand subgrade was compacted in the condition of natural water content with optimizing construction machines. Its compaction degree reached 96%, meeting the current specifications. At last, comparative studies were carried through with electron microscope. It was shown that the microstructure of compacted dry aeolian sand is much denser than that of the natural one in the field test.
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Development of an experimental platform for research in energy and electrical machine control

Ali HMIDET, Rachid DHIFAOUI, Driss SAIDANI, Othman HASNAOUI,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 366-375 doi: 10.1007/s11708-010-0106-x

Abstract: development of a test bench dedicated for electrical machines and energy control, as realized by the research

Keywords： test bench     induction motor     solar energy     wind energy     AC/DC/AC converter     sensors and power measurements    

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Theoretical analysis and actual experimental research on static characteristics of suspendome structure

CHEN Zhihua, YAN Xiangyu, SUN Ruirui, FENG Zhenchang, QIN Yali, ZHAO Jianbo

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 286-292 doi: 10.1007/s11709-007-0037-8

Abstract: The experimental and theoretical values of member forces and nodal displacements were compared and itWhile under high-level load, the experimental value was bigger than the theoretical value due to theBoth the experimental and theoretical results verify that the suspendome has a wide application prospect

Keywords： Tianjin     influence     displacement     high-level     low-level    

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Design and Experimental Research on a New Pipe Rupture Valve

HU Guo-liang, XU Bing, YANG Hua-yong, ZHANG Yi-ding

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 26-32 doi: 10.1007/s11465-005-0009-4

Abstract: Experimental research is also carried out using a hydraulic elevator experiment rig.The numerical simulations accord with experimental results in general.

Keywords： Mathematical     designing requirement     numerical     hydraulic elevator     EN81-2 standard    

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Numerical and experimental research of the characteristics of concentration solar cells

Zilong WANG, Hua ZHANG, Binlin DOU, Weidong WU, Guanhua ZHANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 279-291 doi: 10.1007/s11708-019-0637-8

Abstract: A comparison of the experimental and simulation results indicate that the maximum root mean square error

Keywords： concentration     three-junction solar cell     mathematical model     electrical properties     solar energy    

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Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 606-624 doi: 10.1007/s11709-023-0925-6

Abstract: Theoretical and experimental studies are conducted to verify the effectiveness of the proposed CSTD.

Keywords： cambered surface steel tube damper     energy dissipation capacity     finite element model     hysteretic performance     parametric study    

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Numerical simulation and experimental research on heat transfer and flow resistance characteristics of

Shaozhi ZHANG, Xiao NIU, Yang LI, Guangming CHEN, Xiangguo XU

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 267-282 doi: 10.1007/s11708-020-0662-7

Abstract: The numerical model is verified by the experimental results.

Keywords： plate heat exchanger     asymmetric     simulation     correlation     heat transfer enhancement    

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Experimental research on seismic behavior of recycled concrete frame under varying cyclic loading

SUN Yuedong, XIAO Jianzhuang, ZHOU Deyuan

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 302-308 doi: 10.1007/s11709-008-0050-6

Abstract: A study is conducted on the seismic behavior of one natural concrete frame and two recycled concrete frames with 100% recycled coarse aggregate whose scales are 1:2 entirely, and a comparative study is conducted under low-reversed cyclic lateral loading and different vertical loading. This work aims to estimate the failure mechanism, hysteresis loops, displacement ductility, deterioration of strength and stiffness and energy dissipation of recycled concrete frames under low-reversed cyclic loading as well as the influence of different vertical loading. Analysis on the basis of the experiment proves that it is entirely feasible to apply recycled concrete to practical engineering for the sake of its good seismic behaviors. Theoretical base is provided for further study and practical application of recycled concrete structure.

Keywords： different     aggregate     stiffness     practical application     % recycled    

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Experimental research on the creep behavior and bearing capacity of repeatedly prestressed concrete beam

SHAO Xudong, LI Lifeng, YANG Jianjun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 305-311 doi: 10.1007/s11709-007-0040-0

Abstract: It was proved, through theoretical and experimental comparison between this new structure and the traditional

Keywords： computational     cracking     technology     prestressed concrete     application prospect    

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Experimental research on the mechanical property of prestressing steel wire during and after heating

ZHENG Wenzhong, HU Qiong, ZHANG Haoyu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 247-254 doi: 10.1007/s11709-007-0031-1

Abstract: The mechanical property of prestressing steel wire during and after heating is the key factor in the design of fire resistance and after-fire damage evaluation of prestressed structures. Tensile experiment of 16 prestressing steel wires ( = 1770 N/mm, = 5 mm, low relaxation of stress) at high temperature and tensile experiment of 14 prestressed steel wires after heating are carried out. According to the experiment, the shapes of stress-strain curves of steel wire at high temperature go smooth and the mechanical property indexes of the steel wire such as strength, modulus of elasticity, etc., degenerate continuously as temperature increased. According to the experiment after heating, the mechanical property of steel wire varies little when the highest temperature that the steel wire has ever been heated to is lower than 300vH; while the stress-strain curves of steel wire become more ductile and the mechanical property indexes of the steel wire degenerate gradually when the highest temperature is higher than 300vH. By applying the theory of viscoelastic mechanics, stress-strain curves of steel wire at high temperatures without loading rate influence are obtained. The law of mechanical property indexes of the wire is presented. The mathematical models of the stress-strain relationship of the pre-stressed steel wire are established. All can serve as basic data for the analysis of fire resistance and after-fire damage evaluation of pre-stressed structures.
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Experimental research on ductile fracture criterion in metal forming

Song YU, Weiming FENG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 308-311 doi: 10.1007/s11465-011-0233-z

Abstract: Tension, compression, torsion and shearing test on 45# steel are utilized for providing the experimental

Keywords： ductile fracture criteria     metal forming process     material experiment     stress triaxiality    

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Experimental research on dynamic operating characteristics of a novel silica gel-water adsorption chiller

WANG Dechang, WU Jingyi, WANG Ruzhu, DOU Weidong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 347-351 doi: 10.1007/s11708-007-0052-4

Abstract: The experimental results show that the dynamic operating characteristics of the chiller and the thermodynamic

Keywords： satisfactory     suitable     recovery     adsorption capacity     thermodynamic    

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Title Author Date Type Operation

Numerical simulation and experimental research on the wheel brush sampling process of an asteroid sampler

Journal Article

Experimental research on cyclone performance at high temperature

LI Wenqi, CHEN Jianyi

Journal Article

THAI experimental research on hydrogen risk and source term related safety systems

Journal Article

Experimental research on compaction characteristics of aeolian sand

YUAN Yuqing, WANG Xuancang, ZHOU Xin

Journal Article

Development of an experimental platform for research in energy and electrical machine control

Ali HMIDET, Rachid DHIFAOUI, Driss SAIDANI, Othman HASNAOUI,

Journal Article

Theoretical analysis and actual experimental research on static characteristics of suspendome structure

CHEN Zhihua, YAN Xiangyu, SUN Ruirui, FENG Zhenchang, QIN Yali, ZHAO Jianbo

Journal Article

Design and Experimental Research on a New Pipe Rupture Valve

HU Guo-liang, XU Bing, YANG Hua-yong, ZHANG Yi-ding

Journal Article

Numerical and experimental research of the characteristics of concentration solar cells

Zilong WANG, Hua ZHANG, Binlin DOU, Weidong WU, Guanhua ZHANG

Journal Article

Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Journal Article

Numerical simulation and experimental research on heat transfer and flow resistance characteristics of

Shaozhi ZHANG, Xiao NIU, Yang LI, Guangming CHEN, Xiangguo XU

Journal Article

Experimental research on seismic behavior of recycled concrete frame under varying cyclic loading

SUN Yuedong, XIAO Jianzhuang, ZHOU Deyuan

Journal Article

Experimental research on the creep behavior and bearing capacity of repeatedly prestressed concrete beam

SHAO Xudong, LI Lifeng, YANG Jianjun

Journal Article

Experimental research on the mechanical property of prestressing steel wire during and after heating

ZHENG Wenzhong, HU Qiong, ZHANG Haoyu

Journal Article

Experimental research on ductile fracture criterion in metal forming

Song YU, Weiming FENG

Journal Article

Experimental research on dynamic operating characteristics of a novel silica gel-water adsorption chiller

WANG Dechang, WU Jingyi, WANG Ruzhu, DOU Weidong

Journal Article