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Temperature and structural responses of a single-section utility tunnel throughout fire exposure

Yanmin YANG; Ying XIONG; Yongqing LI; Xiangkun MENG; Peng WANG; Tianyuan CAI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 10,   Pages 1351-1364 doi: 10.1007/s11709-022-0857-6

Abstract: By analyzing temperature and structural responses of the utility tunnel throughout the fire exposure,As the temperature increased, the temperature gradient along the thickness direction of the tunnel becameThe maximum temperature difference between the inner and outer wall surfaces was 531.7 °C.The highest temperature occurred in the cooling stage after stopping the heating, which provided a reference

Keywords： full lightweight concrete     construction methods     temperature response     structural response     fire test    

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Response surface regression analysis on FeCrBSi particle in-flight properties by plasma spray

Runbo MA,Lihong DONG,Haidou WANG,Shuying CHEN,Zhiguo XING

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3,   Pages 250-257 doi: 10.1007/s11465-016-0401-2

Abstract: plasma spray and constructs models that can be used in predicting and analyzing average velocity and temperatureResults of the response surface methodology show that the interactive effects between voltage and sprayFor a given argon flow rate, particle velocity and temperature response surface are obviously bending

Keywords： particle velocity     particle temperature     interactive effects     response surface    

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Sliding window games for cooperative building temperature control using a distributed learning method

Zhaohui ZHANG, Ruilong DENG, Tao YUAN, S. Joe QIN

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 304-314 doi: 10.15302/J-FEM-2017045

Abstract: In practice, an energy consumer often consists of a set of residential or commercial buildings, with individual units that are expected to cooperate to achieve overall optimization under modern electricity operations, such as time-of-use price. Global utility is decomposed to the payoff of each player, and each game is played over a prediction horizon through the design of a series of sliding window games by treating each building as a player. During the games, a distributed learning algorithm based on game theory is proposed such that each building learns to play a part of the global optimum through state transition. The proposed scheme is applied to a case study of three buildings to demonstrate its effectiveness.

Keywords： game theory     demand response     HVAC control     multi-building system    

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Modelling the dynamic response of a solid oxide steam electrolyser to transient inputs during renewable

Qiong CAI, Nigel P. BRANDON, Claire S. ADJIMAN,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 211-222 doi: 10.1007/s11708-010-0037-6

Abstract: Developing an understanding of the response of the SOEC stack to transient events that may occur duringSOEC stack has been employed to study the dynamic behaviour of such an SOEC and the prospect for stack temperatureThe stack temperature and cell voltage are decreased by step changes in the average current density.Without temperature control via variation of the air flow rate, a sudden fall of the temperature andThe temperature excursions between the initial and final steady states are observed to be reduced by

Keywords： hydrogen production     renewable energy     solid oxide electrolyser cell     1D dynamic model     dynamic behaviour     temperature    

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Experimental Study on Temperature Distribution and Response Behaviors of Steel Element under Corner Fire

Chen Changkun,Yao Bin,Yang Yun,Cai Xin,Zhang Heping,Wan Yutian

Strategic Study of CAE 2005, Volume 7, Issue 9,   Pages 70-75

Abstract: The response behaviors of steel element under thermal-mechanical coupling effect in a simulated cornerIn the experiment, the heat release rate and temperature field of the fire, temperature and deflectionof the steel element and the temperature of the gas close to steel surface were measured.Effects of the temperature elevation and distribution of the steel element under corner fire conditionstemperature zone of the element is more inclined to occur.

Keywords： ISO9705 Room/Corner Fire Test Rig     steel element     corner fire     temperature distribution    

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Design and analysis of electrothermal metasurfaces

Xiu LIU, Zhuo LI, Zexiao WANG, Hyeong Seok YUN, Sheng SHEN

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 134-140 doi: 10.1007/s11708-022-0841-9

Abstract: the finite-size effect can be a critical design factor for developing thermal metasurfaces with fast responseand broad temperature uniformity.More importantly, such a small footprint due to the finite array size yields response time down to athe direction perpendicular to the axis of nanorods is found to be insensitive to the resonance and responsetime; thus, providing a tunable aspect ratio that can boost the temperature uniformity in the sub-Kelvin

Keywords： modulated thermal infrared radiation     metasurface     nanosecond response time     sub-Kelvin temperature uniformity    

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Review of recent advances of polymer based dielectrics for high-energy storage in electronic power devices from the perspective of target applications

Wenjie Sun, Jiale Mao, Shuang Wang, Lei Zhang, Yonghong Cheng

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 18-34 doi: 10.1007/s11705-020-1939-4

Abstract: Low electric loss is a critical prerequisite for capacitors for electric grids, while high-temperatureelectronic equipment are emphasized, including high energy storage density, low dissipation, high working temperatureand fast-response time.

Keywords： dielectric capacitors     polymer-based dielectrics     energy density     dielectric loss     working temperature     frequencyresponse    

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Development of a seismic design method based on response spectra for building structures

ZHOU Xiyuan, YU Ruifang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 129-141 doi: 10.1007/s11709-007-0014-2

Abstract: The assumption and problem of the mode-superposition response spectrum method in seismic design codeThe progresses on the mode superposition response spectrum theory are discussed.multiple-support seismic excitations and deducing corresponding method; 4) the approach for calculation of seismic responseof the non-classically damped system with overcritical damping and the calculation method of seismic response

Keywords： generalization     classical damping     mode-superposition response     calculation formula     damping theory    

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Confining pressure effect on dynamic response of high rockfill dam

Xuexing CAO, Yunlong HE, Kun XIONG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 116-126 doi: 10.1007/s11709-010-0014-5

Abstract: A corresponding computational procedure was compiled and applied in the dynamic response analysis of

Keywords： confining pressure effect     high rockfill dam     dynamic response     Hardin-Drnevich constitutive model    

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Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 593-606 doi: 10.1007/s11465-021-0636-4

Abstract: method for the continuum topology optimization of transient vibration problem with maximum dynamic responseAn aggregated index in the form of an integral function is presented to cope with the maximum responseThrough comparison with the corresponding static response from the final designs, the optimized results

Keywords： topology optimization     solid isotropic material with penalization     transient response     aggregation function    

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Emerging challenges to structural integrity technology for high-temperature applications

TU Shantung

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 375-387 doi: 10.1007/s11465-007-0066-y

Abstract: The modern needs of structural integrity technology are largely attributed to the increase of service temperatureBesides the needs arising from large-scale high-temperature plants, the high tech developments, suchin large process plants and the aviation industry, micro chemo-mechanical systems, fuel cells, high-temperatureThe state-of-the-art of structural integrity technology for high temperature applications is reviewed

Keywords： manufacture     aviation industry     conversion     petrochemical     temperature    

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Dynamic response of precast segmental bridge columns under heavy truck impact

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 327-349 doi: 10.1007/s11709-023-0911-z

Abstract: Considering the wide application of precast segmental bridge columns (PSBCs) in engineering practice, impact-resistant performance has gained significant attention. However, few studies have focused on PSBCs subjected to high-energy impacts caused by heavy truck collisions. Therefore, the behavior of PSBCs under a heavy truck impact was investigated in this study using high-fidelity finite element (FE) models. The detailed FE modeling methods of the PSBCs and heavy trucks were validated against experimental tests. The validated modeling methods were employed to simulate collisions between PSBCs and heavy trucks. The simulation results demonstrated that the engine and cargo caused two major peak impact forces during collision. Subsequently, the impact force, failure mode, displacement, and internal force of the PSBCs under heavy truck impacts were scrutinized. An extensive study was performed to assess the influence of the section size, truck weight, impact velocity, and number of precast segments on the impact responses. The truck weight was found to have a minor effect on the engine impact force. Damage was found to be localized at the bottom of the three segments, with the top remaining primarily undamaged. This parametric study demonstrated that larger cross-sections may be a preferred option to protect PSBCs against the impact of heavy trucks.

Keywords： precast segmental bridge columns     heavy truck     collision     dynamic response    

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Effects of temperature on pyrolysis products of oil sludge

LIU Jianguo, SONG Wei, NIE Yongfeng

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 8-14 doi: 10.1007/s11783-008-0030-z

Abstract: Temperature is the determining factor of pyrolysis, which is one of the alternative technologies forThe effects of final operating temperature ranging from 350 to 550°C on pyrolysis products of oil sludgeWith an increase of temperature, the mass fraction of solid residues, liquids, and gases in the finalfrom solid to liquid and gas phase (especially to liquid phase) during the process, and the optimum temperature

Keywords： sludge treatment     corresponding     Temperature     liquid     process    

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Phase separation time/temperature dependence of thermoplastics-modified thermosetting systems

ZHANG Xiujuan, XU Yuanze, YI Xiaosu

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 276-285 doi: 10.1007/s11705-008-0057-5

Abstract: (UCST) or lower critical solution temperature (LCST) were studied with emphasis on the temperature dependencyof the phase separation time and its potential application in the cure time-temperature processing windowWe found that the phase separation time/temperature relationship follows the simple Arrhenius equationWith the established phase separation time-temperature dependence relation, we can easily establish thewhole cure time-temperature transformation (TTT) diagram with morphology information which is a useful

Keywords： separation time-temperature     temperature dependency     cure-induced     separation activation     temperature    

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Historical Changes and Future Trends of Extreme Precipitation and High Temperature in China

Shu Zhangkang , Li Wenxin, Zhang Jianyun, Jin Junliang, Xue Qing, Wang Yintang, Hu Qingfang, Wang Guoqing

Strategic Study of CAE 2022, Volume 24, Issue 5,   Pages 116-125 doi: 10.15302/J-SSCAE-2022.05.014

Abstract: Project Phase 6 (CMIP6), we analyzed the evolution characteristics of extreme precipitation and high temperatureclimate change and cope with the risk of extreme events in the future, China should further improve its response

Keywords： climate change     extreme event     CMIP6     extreme disaster response    

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Title Author Date Type Operation

Temperature and structural responses of a single-section utility tunnel throughout fire exposure

Yanmin YANG; Ying XIONG; Yongqing LI; Xiangkun MENG; Peng WANG; Tianyuan CAI

Journal Article

Response surface regression analysis on FeCrBSi particle in-flight properties by plasma spray

Runbo MA,Lihong DONG,Haidou WANG,Shuying CHEN,Zhiguo XING

Journal Article

Sliding window games for cooperative building temperature control using a distributed learning method

Zhaohui ZHANG, Ruilong DENG, Tao YUAN, S. Joe QIN

Journal Article

Modelling the dynamic response of a solid oxide steam electrolyser to transient inputs during renewable

Qiong CAI, Nigel P. BRANDON, Claire S. ADJIMAN,

Journal Article

Experimental Study on Temperature Distribution and Response Behaviors of Steel Element under Corner Fire

Chen Changkun,Yao Bin,Yang Yun,Cai Xin,Zhang Heping,Wan Yutian

Journal Article

Design and analysis of electrothermal metasurfaces

Xiu LIU, Zhuo LI, Zexiao WANG, Hyeong Seok YUN, Sheng SHEN

Journal Article

Review of recent advances of polymer based dielectrics for high-energy storage in electronic power devices from the perspective of target applications

Wenjie Sun, Jiale Mao, Shuang Wang, Lei Zhang, Yonghong Cheng

Journal Article

Development of a seismic design method based on response spectra for building structures

ZHOU Xiyuan, YU Ruifang

Journal Article

Confining pressure effect on dynamic response of high rockfill dam

Xuexing CAO, Yunlong HE, Kun XIONG,

Journal Article

Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Journal Article

Emerging challenges to structural integrity technology for high-temperature applications

TU Shantung

Journal Article

Dynamic response of precast segmental bridge columns under heavy truck impact

Journal Article

Effects of temperature on pyrolysis products of oil sludge

LIU Jianguo, SONG Wei, NIE Yongfeng

Journal Article

Phase separation time/temperature dependence of thermoplastics-modified thermosetting systems

ZHANG Xiujuan, XU Yuanze, YI Xiaosu

Journal Article

Historical Changes and Future Trends of Extreme Precipitation and High Temperature in China

Shu Zhangkang , Li Wenxin, Zhang Jianyun, Jin Junliang, Xue Qing, Wang Yintang, Hu Qingfang, Wang Guoqing

Journal Article