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Effects of sheet thickness and material on the mechanical properties of flat clinched joint

Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 410-419 doi: 10.1007/s11465-020-0618-y

Abstract: In this paper, the effects of sheet thickness and material on the mechanical properties of the clinchedand Al2024 sheets with 2 mm thickness were employed to develop the clinched joint by using different material

Keywords： clinched joint     flat clinching process     thickness configuration     material configuration     mechanical property    

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Application of cable-supported spatial grid in dry coal shed

XING Haidong, HAO Jiping, XU Guobin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 26-29 doi: 10.1007/s11709-008-0008-8

Abstract: The influence of configuration of cable on the force of cable and beam, the ratio of beam force to cableforce and the deflection of span was investigated, and a rational configuration of cable was obtainedThe results show that the cable-supported spatial grid can maximize the use of material strength, and

Keywords： dry     material strength     low     rational configuration     influence    

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Effects of green roof damping and configuration on structural seismic response

Frontiers of Structural and Civil Engineering   Pages 1133-1144 doi: 10.1007/s11709-023-0959-9

Abstract: Sustainable structures are critical for addressing global climate change. Hence, their structural resilience or ability to recover from natural events must be considered comprehensively. Green roofs are a widely used sustainable feature that improve the environment while providing excellent occupant amenity. To expand their usage, their inherent damping and layout sensitivity to seismic performance are investigated in this study. The soil of a green roof can serve as a damper to dissipate the energy generated by earthquakes or other dynamic events. Results of preliminary analysis show that a green roof soil can increase localized damping by 2.5% under both dry and saturated conditions. Based on these findings, nonlinear time-history analyses are conducted on a three-story building in SAP2000 to monitor the structural behavior with and without a green roof. The increased damping in the green roof soil is beneficial to the structural performance, i.e., it reduces the building displacement and acceleration by 10% and 12%, respectively. Additionally, certain configurations are more effective and beneficial to the structural response than others, which suggests the possibility of design optimization. Based on the findings of this study, new methods of modeling and considering green roofs in structural design are established.

Keywords： green infrastructure     green roof     structural resilience     seismic design    

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Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 522-532 doi: 10.1007/s11709-023-0930-9

Abstract: Owing to long-distance advancement or obstacles, shield tunneling machines are typically shut down for maintenance. Engineering safety during maintenance outages is determined by the stability of the tunnel face. Pressure maintenance openings are typically used under complicated hydrogeological conditions. The tunnel face is supported by a medium at the bottom of the excavation chamber and compressed air at the top. Owing to the high risk of face failure, the necessity of support pressure when cutterhead support is implemented and a method for determining the value of compressed air pressure using different support ratios must to be determined. In this study, a non-fully chamber supported rotational failure model considering cutterhead support is developed based on the upper-bound theorem of limit analysis. Numerical simulation is conducted to verify the accuracy of the proposed model. The results indicate that appropriately increasing the specific gravity of the supporting medium can reduce the risk of collapse. The required compressed air pressure increases significantly as the support ratio decreases. Disregarding the supporting effect of the cutterhead will result in a tunnel face with underestimated stability. To satisfy the requirement of chamber openings at atmospheric pressure, the stratum reinforcement strength and range at the shield end are provided based on different cutterhead aperture ratios.

Keywords： tunnel face stability     cutterhead configuration     aperture ratio     pressure gradient     support ratio    

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Optimizing the configuration of a clearwell by integrating pilot and full-scale tracer testing

LIU Wenjun, DU Zhipeng, JIN Junwei

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 270-275 doi: 10.1007/s11783-007-0045-x

Abstract: confirmed that the installation of baffles within clearwells is an efficient way to optimize their configuration
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Tracing the impact of stack configuration on interface resistances in reverse electrodialysis by in situ

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1480-9

Abstract:

• RED performance and stack resistance were studied by EIS and LSV.

Keywords： Reverse electrodialysis     Electrochemical impedance spectroscopy     Concentration polarization     Spacer shadow effect    

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Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1591-y

Abstract:

● A novel PRB configuration based on passive convergent flow effect

Keywords： Passive convergence-permeable reactive barrier (PC-PRB)     Permeable reactive barrier configuration     Numerical    

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Efficient Configuration Space Construction and Optimization for Motion Planning Article

Jia Pan, Dinesh Manocha

Engineering 2015, Volume 1, Issue 1,   Pages 46-57 doi: 10.15302/J-ENG-2015009

Abstract:

The configuration space is a fundamental concept that is widely used in algorithmic robotics.In this paper, we survey some of our recent work on solving two important challenges related to configurationspaces: ① how to efficiently compute an approximate representation of high-dimensional configurationThese algorithms perform collision queries on many configuration samples., which quickly converges to the exact configuration space.

Keywords： configuration space     motion planning     GPU parallel algorithm    

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Elevator Configuration Based on the Markov Network Queuing Model

Zong Qun,Cheng Yiju,Song Junyuan

Strategic Study of CAE 2003, Volume 5, Issue 10,   Pages 69-72

Abstract: Based on the model elevator configuration parameters of the serving stations are calculated, comparingMeanwhile the result shows the validity and feasibility of the method applied to elevator configuration

Keywords： Markov network queuing theory     elevator traffic model     optimizing elevator configuration    

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Evaluation and Recombination of Property Right Configuration for Urban Water Supply System

Xiao Wen,Ouyang Fangrui,Wang Xianjia

Strategic Study of CAE 2004, Volume 6, Issue 7,   Pages 48-52

Abstract:

In this paper, two basic models of recombination of property right configuration for urban water supplyThe evaluation index and methodology of property right configuration for urban water supply system areThe characteristics of the two property right configuration models and actions of different benefit bodies

Keywords： urban water supply system     property right configuration     recombination of property right     evaluation of    

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Flutter control effect and mechanism of central-slotting for long-span bridges

YANG Yongxin, GE Yaojun, XIANG Haifan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 298-304 doi: 10.1007/s11709-007-0039-6

Abstract: The control effect of central-slotting depends on the aerodynamic configuration of the original girder

Keywords： aerodynamic configuration     aerodynamic performance     flutter mechanism     aerodynamic stability     theoretical    

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Liquid metal material genome: Initiation of a new research track towards discovery of advanced energy

Lei WANG, Jing LIU

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 317-332 doi: 10.1007/s11708-013-0271-9

Abstract: With many superior physical properties over conventional fluids, the low melting point liquid metal materialInspired by the Material Genome Initiative as issued in 2011 by the United States of America, a morespecific and focused project initiative was proposed in this paper—the liquid metal material genome aimedThe theoretical strategies and experimental methods in the research and development of liquid metal materialParticularly, the calculation of phase diagram (CALPHAD) approach as a highly effective way for material

Keywords： liquid metal material genome     energy material     material discovery     advanced material     room-temperature liquid    

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Robust topology optimization of multi-material lattice structures under material and load uncertainties

Yu-Chin CHAN, Kohei SHINTANI, Wei CHEN

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 141-152 doi: 10.1007/s11465-019-0531-4

Abstract: Enabled by advancements in multi-material additive manufacturing, lightweight lattice structures consistingThis work proposes a density-based robust topology optimization method for meso- or macro-scale multi-materiallattice structures under any combination of material and load uncertainties.The method utilizes a new generalized material interpolation scheme for an arbitrary number of materialsExamples of a cantilever beam lattice structure under various material and load uncertainty cases exhibit

Keywords： robust topology optimization     lattice structures     multi-material     material uncertainty     load uncertainty    

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State-of-art review of the optimization methods to design the configuration of hybrid renewable energy

Maurizio FACCIO, Mauro GAMBERI, Marco BORTOLINI, Mojtaba NEDAEI

Frontiers in Energy 2018, Volume 12, Issue 4,   Pages 591-622 doi: 10.1007/s11708-018-0567-x

Abstract: including loss of power supply probability (LPSP) and loss of load probability (LLP), cost, sizing (configurationFurthermore, it has been demonstrated that, integration of the PV, wind and battery is the most frequent configuration

Keywords： hybrid renewable energy systems (HRESs)     design and optimization     environmental pollutions     PV array     wind turbines (WTs)     inverter     diesel generator (DG)    

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Thoughts on Scientific Issues in Engineering Material Research

yuqiao

Strategic Study of CAE 1999, Volume 1, Issue 3,   Pages 1-4

Abstract: Although some achievements have been accumulated in material research at home and abroad, deeper investigationsare still needed on a more precise model and state equation corresponding to the damage of a specific materialand the erosion of the space articles as well as the increase of the retreat value of the protection materialbelong to the response of materials to high speed collision.Electromagnetic materials such as radome material, infrared stealth material and EM shielding material are all EM functioning materials with EM wave of

Keywords： material for radome     wave absorbing material     infrared stealth material     EMC material    

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Title Author Date Type Operation

Effects of sheet thickness and material on the mechanical properties of flat clinched joint

Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN

Journal Article

Application of cable-supported spatial grid in dry coal shed

XING Haidong, HAO Jiping, XU Guobin

Journal Article

Effects of green roof damping and configuration on structural seismic response

Journal Article

Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Journal Article

Optimizing the configuration of a clearwell by integrating pilot and full-scale tracer testing

LIU Wenjun, DU Zhipeng, JIN Junwei

Journal Article

Tracing the impact of stack configuration on interface resistances in reverse electrodialysis by in situ

Journal Article

Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic

Journal Article

Efficient Configuration Space Construction and Optimization for Motion Planning

Jia Pan, Dinesh Manocha

Journal Article

Elevator Configuration Based on the Markov Network Queuing Model

Zong Qun,Cheng Yiju,Song Junyuan

Journal Article

Evaluation and Recombination of Property Right Configuration for Urban Water Supply System

Xiao Wen,Ouyang Fangrui,Wang Xianjia

Journal Article

Flutter control effect and mechanism of central-slotting for long-span bridges

YANG Yongxin, GE Yaojun, XIANG Haifan

Journal Article

Liquid metal material genome: Initiation of a new research track towards discovery of advanced energy

Lei WANG, Jing LIU

Journal Article

Robust topology optimization of multi-material lattice structures under material and load uncertainties

Yu-Chin CHAN, Kohei SHINTANI, Wei CHEN

Journal Article

State-of-art review of the optimization methods to design the configuration of hybrid renewable energy

Maurizio FACCIO, Mauro GAMBERI, Marco BORTOLINI, Mojtaba NEDAEI

Journal Article

Thoughts on Scientific Issues in Engineering Material Research

yuqiao

Journal Article