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Seismic behavior experimental study of frame joints with special-shaped column and dispersed steel barbeam

Shuchun LI, Bo DIAO, Youpo SU,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 378-383 doi: 10.1007/s11709-009-0064-8

Abstract: To overcome the problem that steel bars are put too close at a flame joint with special-shaped beam andcolumn, mechanical performance of three groups of six RC flame joints with special-shaped (L, T and+) column and dispersed-steel bars-beam on the top floor under cyclic loads were studied.Experimental comparison was conducted between special-shaped (L, T and+) column and normal beams.and+-shaped column are nearly not changed when suitable proportion steel bars are dispersed to flange

Keywords： beam with dispersed steel bar     flame joints with special-shaped beam and column     seismic behavior     scale    

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Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork

Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1271-1287 doi: 10.1007/s11709-019-0556-0

Abstract: This paper presents a new means to address this issue by introducing a composite beam with a U-shapedThe flexural performance of the ECC/RC composite beam has been investigated experimentally with eightAccording to the test results, the failure of a composite beam with a U-shaped ECC formwork is initiatedof ductility, load-carrying capacity, and damage tolerance compared with the counterpart ordinary RC beam

Keywords： engineered cementitious composite (ECC)     durability     ECC/RC composite beam     permanent formwork     flexural    

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Optimal Design of Aperture Illuminations for Microwave Power Transmission with Annular Collection Areas Article

Xun Li, Baoyan Duan, Yiqun Zhang, Yongxin Guo

Engineering 2023, Volume 30, Issue 11,   Pages 63-74 doi: 10.1016/j.eng.2023.07.016

Abstract:

This work presents an optimal design method of antenna aperture illumination for microwave power transmission with an annular collection area. The objective is to maximize the ratio of the power radiated on the annular collection area to the total transmitted power. By formulating the aperture amplitude distribution through a summation of a special set of series, the optimal design problem can be reduced to
finding the maximum ratio of two real quadratic forms. Based on the theory of matrices, the solution to the formulated optimization problem is to determine the largest characteristic value and its associated characteristic vector. To meet security requirements, the peak radiation levels outside the receiving area are considered to be extra constraints. A hybrid grey wolf optimizer and Nelder–Mead simplex method is developed to deal with this constrained optimization problem. In order to demonstrate the effectiveness of the proposed method, numerical experiments on continuous apertures are conducted; then, discrete arrays of isotropic elements are employed to validate the correctness of the optimized results. Finally, patch arrays are adopted to further verify the validity of the proposed method.

Keywords： Microwave power transmission     Beam collection efficiency     Ring-shaped beam     Annular collection area    

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A novel flow electrode capacitive deionization device with spindle-shaped desalting chamber

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1800-y

Abstract:

● A spindle-shaped influent chamber was designed and equipped in

Keywords： Spindle-shaped chamber     Desalination performance     Flow electrode capacitive deionization    

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Bending performance of composite bridge deck with T-shaped ribs

Qingtian SU, Changyuan DAI, Xu JIANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 990-997 doi: 10.1007/s11709-019-0532-8

Abstract: new type of steel-concrete composite deck, which is composed of orthotropic steel deck (OSD) with T-shaped

Keywords： bending performance     composite bridge deck     T-shaped steel ribs    

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V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1578-8

Abstract:

● V-shaped substrate was obtained for SERS analysis of microplastics

Keywords： SERS     V-shaped     AAO     Microplastic     Atmospheric aerosol    

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Performance of vertical axis water turbine with eye-shaped baffle for pico hydropower

Zhuohuan HU, Dongcheng WANG, Wei LU, Jian CHEN, Yuwen ZHANG

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 683-696 doi: 10.1007/s11708-020-0689-9

Abstract: The turbine with an eye-shaped vertical water baffle was developed to evaluate the hydraulic performanceThe proper eye-shaped baffle not only accelerates the fluid flow and generates positive hydrodynamic

Keywords： vertical axis water turbine     eye-shaped     vertical water baffle     pico hydropower    

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Optimal design of a large dual-polarization microstrip reflectarray with China-coverage patterns for satellite communications Research Articles

Gang ZHAO, Yong-chang JIAO, Guan-tao CHEN

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 159-173 doi: 10.1631/FITEE.1900496

Abstract: Due to the complexly shaped areas and high gain requirements, there are more than 25 000 elements inrelationship between the aperture distribution and the far field, which lays a foundation for optimizing the shaped-beamTo validate the design method, a dual-polarization shaped-beam reflectarray with 7569 elements is fabricatedoperating bands, and that the proposed optimization method for designing large reflectarrays with complexly shaped

Keywords： Reflectarray     Dual-polarization     Shaped beam     Phase-only synthesis    

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Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1214-1226 doi: 10.1007/s11709-019-0550-6

Abstract: investigate the shear yielding, flexural yielding, and lateral torsional buckling limit states for butterfly-shapedThe results indicate that as the shape of the butterfly-shaped links become too straight or conversely

Keywords： structural fuse     hysteretic damper     finite element analysis     energy dissipation     initial imperfection     butterfly-shaped    

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Scaling up of cluster beam deposition technology for catalysis application

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1360-1379 doi: 10.1007/s11705-021-2101-7

Abstract: Many research works have demonstrated that the combination of atomically precise cluster deposition and theoretical calculations is able to address fundamental aspects of size-effects, cluster-support interactions, and reaction mechanisms of cluster materials. Although the wet chemistry method has been widely used to synthesize nanoparticles, the gas-phase synthesis and size-selected strategy was the only method to prepare supported metal clusters with precise numbers of atoms for a long time. However, the low throughput of the physical synthesis method has severely constrained its wider adoption for catalysis applications. In this review, we introduce the latest progress on three types of cluster source which have the most promising potential for scale-up, including sputtering gas aggregation source, pulsed microplasma cluster source, and matrix assembly cluster source. While the sputtering gas aggregation source is leading ahead with a production rate of ~20 mg·h–1, the pulsed microplasma source has the smallest physical dimensions which makes it possible to compact multiple such devices into a small volume for multiplied production rate. The matrix assembly source has the shortest development history, but already show an impressive deposition rate of ~10 mg·h–1. At the end of the review, the possible routes for further throughput scale-up are envisaged.

Keywords： nanoparticle     cluster     cluster beam deposition     magnetron sputtering     heterogeneous catalysis    

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A New Model Shaped Charge Warhead and the Discussion of It's Evolution

An Erfeng,Shen Zhaowu,Zhou Tingqing,Wang Derun

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 85-90

Abstract:

The shaped charge warheads are designed only based on one single liner absolutely today.Authors of this paper put forward a new combined model of shaped charge warhead based on the energy viewpointThe experiment results reveal that the penetration of new model shaped charge warhead can achieve anA design of new shaped charge warhead is put out against the ERA.

Keywords： shaped charge warhead     explosively formed projectile     shaped charge jet     ERA     penetration    

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Soil arching effect of Lattice-Shaped Diaphragm Wall as bridge foundation

Jiujiang WU, Lingjuan WANG, Qiangong CHENG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 446-454 doi: 10.1007/s11709-017-0397-7

Abstract: As a new type of bridge foundation, Lattice-Shaped Diaphragm Wall (hereinafter for LSDW) is highly concerned

Keywords： LSDW     soil arching     PFC2D     shape of soil arching     influencing factors    

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Modal disturbance investigation of rod-shaped ultrasonic motor using bending vibrations

ZHANG Jiantao, ZHU Hua, ZHAO Chunsheng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 343-347 doi: 10.1007/s11465-008-0058-6

Abstract: Modal disturbance of a rod-shaped ultrasonic motor using bending vibrations can cause problems such asA rod-shaped ultrasonic motor stator is fabricated, and the experimental results of its amplitude frequency

Keywords： Hamilton principle     disturbance     separation     frequency separation     dynamic analysis    

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On subsurface box-shaped lined tunnel under incident SH-wave propagation

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 948-960 doi: 10.1007/s11709-021-0740-x

Abstract: boundary element method is applied to obtain the seismic ground response, including a subsurface box-shapedThe present approach can be proposed to civil engineers for preparing simple underground box-shaped models

Keywords： box-lined tunnel     half-plane BEM     surface response     SH-wave     time-domain    

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Novel piezoelectric pump with “E”-shaped valve found from sub-experiments

Jianhui ZHANG, Jun HUANG, Xiaoqi HU, Qixiao XI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 212-218 doi: 10.1007/s11465-010-0009-x

Abstract: Second, an “E”-shaped valve and piezoelectric pump with an “E”-shaped valve (

Keywords： piezoelectricity     valve     pump     experiment     “     E”     -shaped valve    

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Title Author Date Type Operation

Seismic behavior experimental study of frame joints with special-shaped column and dispersed steel barbeam

Shuchun LI, Bo DIAO, Youpo SU,

Journal Article

Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork

Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG

Journal Article

Optimal Design of Aperture Illuminations for Microwave Power Transmission with Annular Collection Areas

Xun Li, Baoyan Duan, Yiqun Zhang, Yongxin Guo

Journal Article

A novel flow electrode capacitive deionization device with spindle-shaped desalting chamber

Journal Article

Bending performance of composite bridge deck with T-shaped ribs

Qingtian SU, Changyuan DAI, Xu JIANG

Journal Article

V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Journal Article

Performance of vertical axis water turbine with eye-shaped baffle for pico hydropower

Zhuohuan HU, Dongcheng WANG, Wei LU, Jian CHEN, Yuwen ZHANG

Journal Article

Optimal design of a large dual-polarization microstrip reflectarray with China-coverage patterns for satellite communications

Gang ZHAO, Yong-chang JIAO, Guan-tao CHEN

Journal Article

Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Journal Article

Scaling up of cluster beam deposition technology for catalysis application

Journal Article

A New Model Shaped Charge Warhead and the Discussion of It's Evolution

An Erfeng,Shen Zhaowu,Zhou Tingqing,Wang Derun

Journal Article

Soil arching effect of Lattice-Shaped Diaphragm Wall as bridge foundation

Jiujiang WU, Lingjuan WANG, Qiangong CHENG

Journal Article

Modal disturbance investigation of rod-shaped ultrasonic motor using bending vibrations

ZHANG Jiantao, ZHU Hua, ZHAO Chunsheng

Journal Article

On subsurface box-shaped lined tunnel under incident SH-wave propagation

Journal Article

Novel piezoelectric pump with “E”-shaped valve found from sub-experiments

Jianhui ZHANG, Jun HUANG, Xiaoqi HU, Qixiao XI,

Journal Article