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Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 28-36 doi: 10.1007/s11465-008-0007-4

Abstract: Based on the theory of heat transfer, this paper supplies a numerical solution to the non-homogeneousBy testing the thermal dynamic characteristics of the ball-screw, the numerical solution is validated

Keywords： numerical solution     temperature corresponding     temperature distribution     end-most     ball-screw    

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

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: obtain solutions with special properties as wish, meaning that S-FEM offers a framework for design numericalThis novel concept of numerical model on-demand may drastically change the landscape of modeling and

Keywords： smoothing technique     smoothing domain     weakened weak form     solid mechanics     softening effect     upper bound solution    

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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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Analytical dynamic solution of a flexible cable-suspended manipulator

Mahdi BAMDAD

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 350-359 doi: 10.1007/s11465-013-0271-9

Abstract: In this paper, an analytic solution is provided to solve cable vibration.Also, a closed form solution can be adopted to improve the dynamic response to flexibility.

Keywords： parallel robot     flexible cable     suspended robot     dynamic    

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Solution properties and self-association of multi-blocks like copolymer P(AM/AA) prepared by template

ZHANG Yuxi, WU Feipeng, LI Miaozhen, WANG Erjian

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 68-71 doi: 10.1007/s11705-007-0014-8

Abstract: copolymers (TP) of acrylamide (AM) and acrylic acid (AA) prepared by template copolymerization in aqueous solutionDecreasing the value of pH or adding Ca ion to the copolymer solution will make phase separation occurWith the increase of the pH value of copolymer solution, the changes of the solution viscosity was similar

Keywords： aqueous solution     homopolyacrylic     copolymer solution     significant structure     presence    

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Yue’s solution of classical elasticity in

Zhong-qi Quentin YUE

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 3,   Pages 215-249 doi: 10.1007/s11709-015-0298-6

Abstract: layered or graded solids can be calculated with any controlled accuracy in association with classical numericalFindings of this solution formulation are further used in the companion paper for mathematical verificationsolutions have been named by other researchers as Yue’s approach, Yue’s treatment, Yue’s method and Yue’s solution

Keywords： elasticity     solution     layered solid     graded material    

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Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 219-225 doi: 10.1007/s11709-008-0037-3

Abstract: Formulas for computing natural frequencies and modes of Hardfill dams are derived based on one-dimensional shear wedge theory, in which the influences of the upstream concrete face and hydrodynamic pressure of water on the dams’ natural frequencies and modes are discussed. Furthermore, the seismic responses of Hardfill dams are calculated using response spectrum method. An example is analyzed to compare the differences of natural frequencies and modes between shear wedge method and FEM. Then the applicability and accuracy of shear wedge method to analyze free vibration characteristics of Hardfill dams are proven.

Keywords： upstream concrete     hydrodynamic pressure     vibration     one-dimensional     applicability    

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Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 329-333 doi: 10.1007/s11709-007-0043-x

Abstract: Based on the unified strength theory [1], a unified strength criterion for strain softening materials, such as concrete or rock, was derived, and the elastic and plastic limit loads of a thick-walled cylinder made of these materials subject to external pressure were also given. In addition, the influence of some factors on the limit loads of such cylinders as the ratio of the external radius to internal radius,/, the coefficient , which reflects the effect of medium principal stress and the normal stress of the relevant surface on the material destroy degree, the ratio of tensile strength to compressed strength of the material, , and the damage variable
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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: The method comprises the following steps: i) determination of the total head, ii) upper bound solutionThe numerical results confirm the validity of the total head distribution.

Keywords： seismic active earth pressure     partial seepage flow     pore pressure     anisotropy     upper bound theorem    

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Enhanced solution representations for vehicle routing problems with split deliveries

Frontiers of Engineering Management   Pages 483-498 doi: 10.1007/s42524-023-0259-z

Abstract: In this study, we investigate a forest-based solution representation for split delivery vehicle routingThe new solution representation fully reflects the nature of split delivery, and can help reduce theTo highlight the effectiveness of this solution representation, we integrate these operators into a standardThe experimental results show that the new forest-based solution representation is particularly effective

Keywords： vehicle routing     multidepot     time windows     tabu search     split delivery    

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Additives effects on crystallization and morphology in a novel caustic aluminate solution decomposition

Ying ZHANG, Shili ZHENG, Yifei ZHANG, Hongbin XU, Yi ZHANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 88-92 doi: 10.1007/s11705-009-0133-5

Abstract: A novel process of caustic aluminate solution decomposition by alcohol medium was developed by the InstituteThe crystallization ratios of sodium aluminate solution and crystal size of aluminum hydroxide, determined

Keywords： additive     crystallization     morphology     caustic aluminate solution     aluminium hydroxide    

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Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible

Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 171-179 doi: 10.1007/s11709-011-0103-0

Abstract: This paper presents an uncoupled state space solution to three-dimensional consolidation of layered poroelasticthe continuity conditions between adjacent layers and boundary conditions, the uncoupled state space solutionNumerical results show that the anisotropy of permeability and the compressibility of pore fluid have

Keywords： uncoupled state space solution     layered poroelastic medium     three-dimensional consolidation     anisotropic    

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Using machine learning models to explore the solution space of large nonlinear systems underlying flowsheet

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 183-197 doi: 10.1007/s11705-021-2073-7

Abstract: Flowsheet simulations of chemical processes on an industrial scale require the solution of large systemsconstraints from technical, economic, environmental, and safety considerations may further limit the feasible solution

Keywords： machine learning     flowsheet simulations     constraints     exploration    

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HPLC determination of glyoxal in aldehyde solution with 3-methyl-2-benzothiazolinone hydrazone

Yamei ZHU, Xiaoli YAO, Shaohui CHEN, Qun CUI, Haiyan WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 117-121 doi: 10.1007/s11705-010-0535-4

Abstract: UV-vis) spectral region, a HPLC method was developed for the determination of glyoxal in acetaldehyde solutionThe analysis of glyoxal in an oxidising solution gave accurate results with a relative standard deviation

Keywords： HPLC     glyoxal     3-methyl-2-benzothiazolinone hydrazone     diazine     dicarbonyl compounds    

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Investigation of phosphate adsorption from an aqueous solution using spent fluid catalytic cracking catalyst

Zhen Li, Zhaofu Qiu, Ji Yang, Benteng Ma, Shuguang Lu, Chuanhui Qin

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1082-3

Abstract:

Spent FCC catalyst with lanthanum is proposed as a novel P-removal adsorbent.

The spent FCC catalyst exhibits 99% adsorption efficiency for low P-concentration wastewater (C0 <5.0 mg/L).

High affinity, endothermic reaction and fast sorption kinetics are achieved.

The phosphate is adsorbed in the form of LaPO4 and KH2PO4.

Keywords： Spent FCC catalyst     Phosphate removal     Adsorption     Lanthanum    

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Title Author Date Type Operation

Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Journal Article

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

Gui-Rong Liu

Journal Article

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

Journal Article

Analytical dynamic solution of a flexible cable-suspended manipulator

Mahdi BAMDAD

Journal Article

Solution properties and self-association of multi-blocks like copolymer P(AM/AA) prepared by template

ZHANG Yuxi, WU Feipeng, LI Miaozhen, WANG Erjian

Journal Article

Yue’s solution of classical elasticity in

Zhong-qi Quentin YUE

Journal Article

Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Journal Article

Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Journal Article

Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Journal Article

Enhanced solution representations for vehicle routing problems with split deliveries

Journal Article

Additives effects on crystallization and morphology in a novel caustic aluminate solution decomposition

Ying ZHANG, Shili ZHENG, Yifei ZHANG, Hongbin XU, Yi ZHANG

Journal Article

Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible

Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU

Journal Article

Using machine learning models to explore the solution space of large nonlinear systems underlying flowsheet

Journal Article

HPLC determination of glyoxal in aldehyde solution with 3-methyl-2-benzothiazolinone hydrazone

Yamei ZHU, Xiaoli YAO, Shaohui CHEN, Qun CUI, Haiyan WANG

Journal Article

Investigation of phosphate adsorption from an aqueous solution using spent fluid catalytic cracking catalyst

Zhen Li, Zhaofu Qiu, Ji Yang, Benteng Ma, Shuguang Lu, Chuanhui Qin

Journal Article