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General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0681-7

Abstract: The novel algebraic geometric (NAG) methods that obtain the general closed-form inverse kinematics forindicating that the inverse solutions are consistent with the given joint angles validate the general closed-formAdditionally, the mean and maximum of the master–slave tracking experiment for the closed-form solutionThe experiments results demonstrate that the closed-form solution is superior to the compensation methodThe results verify the proposed general closed-form inverse kinematics based on the NAG methods.

Keywords： inverse kinematics     Paden–Kahan subproblems     three-joint subproblems     product of exponential     closed-formsolution    

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Generation of closed-form inverse kinematics for reconfigurable robots

ZHAO Jie, WANG Weizhong, GAO Yongsheng, CAI Hegao

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 91-96 doi: 10.1007/s11465-008-0013-6

Abstract: A generalized, decomposable, and reusable approach for close-form inverse kinematics of reconfigurable

Keywords： different     effectiveness     generation     reconfigurable     algebraic    

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Closed surface modeling with helical line measurement data

LI Ruqiong, LI Guangbu, WANG Yuhan

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 72-76 doi: 10.1007/s11465-007-0012-z

Abstract: Models for surface modeling of free-form surface and massive data points are becoming an important featureHowever, there are many problems to be solved in this area, especially for closed free-form surface modelingThis article presents an effective method for cloud data closed surface modeling from asynchronous profilesteps: first, the cloud data are preprocessed for smoothing; second, a helical line is segmented to form

Keywords： free-form surface     helical     triangle     design/computer-aided manufacturing     effective    

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The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired solutions

Gui-Rong Liu

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 456-477 doi: 10.1007/s11709-019-0519-5

Abstract:

The smoothed finite element method (S-FEM) was originated by G R Liu by combining some meshfree techniques with the well-established standard finite element method (FEM). It has a family of models carefully designed with innovative types of smoothing domains. These models are found having a number of important and theoretically profound properties. This article first provides a concise and easy-to-follow presentation of key formulations used in the S-FEM. A number of important properties and unique features of S-FEM models are discussed in detail, including 1) theoretically proven softening effects; 2) upper-bound solutions; 3) accurate solutions and higher convergence rates; 4) insensitivity to mesh distortion; 5) Jacobian-free; 6) volumetric-locking-free; and most importantly 7) working well with triangular and tetrahedral meshes that can be automatically generated. The S-FEM is thus ideal for automation in computations and adaptive analyses, and hence has profound impact on AI-assisted modeling and simulation. Most importantly, one can now purposely design an S-FEM model to obtain solutions with special properties as wish, meaning that S-FEM offers a framework for design numerical models with desired properties. This novel concept of numerical model on-demand may drastically change the landscape of modeling and simulation. Future directions of research are also provided.

Keywords： element method     smoothed finite element method     strain smoothing technique     smoothing domain     weakened weak form     solid mechanics     softening effect     upper bound solution    

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Experimental investigations on operating characteristics of a closed loop pulsating heat pipe

Yu WANG

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 134-141 doi: 10.1007/s11708-015-0354-x

Abstract: A series of experiments were conducted on a closed loop PHP with 5 turns made of copper capillary tube

Keywords： closed loop pulsating heat pipe     thermal performance     operation limit     thermography    

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Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 834-850 doi: 10.1007/s11709-021-0743-7

Abstract: An optimization plan was proposed in the combined form of SSGCB.Three-dimensional finite element analysis was adopted to perform the combination form optimization of

Keywords： steel sheet GFRP composite bar     combination form     numerical modeling     mechanical properties test     strength    

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Improvement of the cascading closed loop cycle system

ZHANG Guoqiang, CAI Ruixian

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 341-346 doi: 10.1007/s11708-007-0051-5

Abstract: Aspen Plus was used to simulate and get more information about the cascading closed loop cycle (CCLC)
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Dynamic simulation of a space gas-cooled reactor power system with a closed Brayton cycle

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 916-929 doi: 10.1007/s11708-021-0757-9

Abstract: Space nuclear reactor power (SNRP) using a gas-cooled reactor (GCR) and a closed Brayton cycle (CBC)

Keywords： gas-cooled space nuclear reactor power     closed Brayton cycle     system startup and shutdown     positive reactivity    

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A review of optimization modeling and solution methods in renewable energy systems

Frontiers of Engineering Management   Pages 640-671 doi: 10.1007/s42524-023-0271-3

Abstract: Web of Science database, this study reviews the decision-making optimization problems, models, and solution

Keywords： renewable energy system     bibliometrics     mathematical programming     optimization models     solution methods    

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New form of geodetic coordinate system taking two length quantity as coordinate parameters

Yimin SHI, Ziyang ZHU, Yeming FAN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 105-110 doi: 10.1007/s11709-009-0014-5

Abstract: A new form of geodetic coordinate system based on geodesic coordinates instead of geodetic longitudeThe first fundamental form on the ellipsoidal surface and its three coefficients were deduced by theconsequently, it is convenient and accurate enough to operate on the ellipsoidal surface in this new form

Keywords： geodetic coordinate system     meridian and parallel circle     coordinate parameter     the first fundamental form    

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Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 381-388 doi: 10.1007/s11708-009-0057-2

Abstract: The effect of Joule heating on the steady state electro-osmotic flow in a closed-end micro-channel ison the induced pressure gradient is also studied, which is very important for the application of the closed-end

Keywords： closed-end micro-channel     electrical double layer     electro-osmotic flow     induced pressure gradient     Joule    

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Subcellular distribution and chemical form of Pb in hyperaccumulator

Yanqun ZU,Yuan LI,Huan MIN,Fangdong ZHAN,Li QIN,Jixiu WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 250-258 doi: 10.1007/s11783-014-0643-3

Abstract: Solution culture was conducted in order to understand accumulation characteristics and chemical formsshowed that: 1) Pb contents in the shoot and root of increased with increasing in Pb concentrations in solutionof soluble sugar and free amino acid of root exudates increased with increasing Pb concentration in solutionbetween Pb and contents of soluble sugar and free amino acid were observed. 5) With Pb concentrations in solution

Keywords： Pb     Arenaria orbiculata     chemical forms     subcellular distribution     root exudates     hydroponic culture    

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Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1222-1237 doi: 10.1007/s11709-021-0773-1

Abstract: The influence of closed and open surface flaws on the stress distribution and failure in rock specimensThe simulated specimens include those with closed flaws and those with open flaws on the surface.Numerical results show significant differences in the stress, displacement, and failure behavior of the closed

Keywords： surface flaw     heterogeneity     circular hole     numerical modeling     relative displacement    

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PWR-FBR with closed fuel cycle for a sustainable nuclear energy supply in China

XU Mi

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 129-134 doi: 10.1007/s11708-007-0016-8

Abstract: From the thermal reactor to the fast reactor and then to the fusion reactor; this is the three-step strategy that has been decided for a sustainable nuclear energy supply in China. As the main thermal reactor type, the commercialized development phase of the pressurized water reactor (PWR) has been stepped up. The development of the fast reactor (FBR) is still in the early stage, marked by China experimental fast reactor (CEFR), which is currently under construction. According to the strategy study on the fast reactor development in China, its engineering development will be divided into three steps: the CEFR with a power of 65 MWt/20 MWe; the China prototype fast reactor (CPFR) with a power of 1 500 MWt/600 MWe; and the China demonstration fast reactor (CDFR) with a power of 2 500 3 750 MWt/1 000 1 500 MWe. With regards to the fuel cycle, a 100 t/a PWR spent fuel reprocessing pilot plant and a 500 kg/ a MOX fabrication plant are under construction. A project involving the construction of an industrial reprocessing plant and an MOX fabrication plant are also under application phase.

Keywords： reactor development     reprocessing     MWt/600     demonstration     three-step strategy    

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Virtual Corporation Is a New Form of Enterprise for Knowledge Economy

Li Xin,Li Ji

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 81-85

Abstract:

This paper tries to use the theory of modern management to analyze virtual corporation, the new form

Keywords： knowledge economy     virtual corporation     new form of enterprise    

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Title Author Date Type Operation

General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Journal Article

Generation of closed-form inverse kinematics for reconfigurable robots

ZHAO Jie, WANG Weizhong, GAO Yongsheng, CAI Hegao

Journal Article

Closed surface modeling with helical line measurement data

LI Ruqiong, LI Guangbu, WANG Yuhan

Journal Article

The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired solutions

Gui-Rong Liu

Journal Article

Experimental investigations on operating characteristics of a closed loop pulsating heat pipe

Yu WANG

Journal Article

Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber

Journal Article

Improvement of the cascading closed loop cycle system

ZHANG Guoqiang, CAI Ruixian

Journal Article

Dynamic simulation of a space gas-cooled reactor power system with a closed Brayton cycle

Journal Article

A review of optimization modeling and solution methods in renewable energy systems

Journal Article

New form of geodetic coordinate system taking two length quantity as coordinate parameters

Yimin SHI, Ziyang ZHU, Yeming FAN

Journal Article

Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Journal Article

Subcellular distribution and chemical form of Pb in hyperaccumulator

Yanqun ZU,Yuan LI,Huan MIN,Fangdong ZHAN,Li QIN,Jixiu WANG

Journal Article

Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Journal Article

PWR-FBR with closed fuel cycle for a sustainable nuclear energy supply in China

XU Mi

Journal Article

Virtual Corporation Is a New Form of Enterprise for Knowledge Economy

Li Xin,Li Ji

Journal Article