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A combined control strategy using tuned liquid dampers to reduce displacement demands of base-isolated structures: a probabilistic approach

Parham SHOAEI, Houtan Tahmasebi OROMI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 890-903 doi: 10.1007/s11709-019-0524-8

Abstract: This paper investigates a hybrid structural control system using tuned liquid dampers (TLDs) and lead-rubberbearing (LRB) systems for mitigating earthquake-induced vibrations.which the maximum reduction occurs in the base displacement without compromising the performance of the systemIn addition, the effects of TLD properties on the performance of the system are studied through a parametric

Keywords： tuned liquid damper     lead-rubber bearing system     probabilistic framework     steel shear building     relative    

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Challenges and Development Strategies of China’s Natural Rubber

Huang Zongdao

Strategic Study of CAE 2001, Volume 3, Issue 2,   Pages 28-32

Abstract: founding of the People´s Republic of China in 1949 that China endeavored to expand its natural rubberBy 1998, the area under rubber had increased to 600, 000 ha, which was 214 times larger than that inThis made China one of the major natural rubber producing contries in the world, area ranking fourthwill rush Chinese rubber market, which will bring pinch to Chinese natural rubber industry.In this article, some suggestions for natural rubber development in China are proposed.

Keywords： natural rubber     WTO     tapping system    

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Vibratory behaviors of Jeffcott system on cylindrical roller bearings

Hao WU, Jianwen WANG, Qi AN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 305-309 doi: 10.1007/s11465-009-0036-7

Abstract: A Jeffcott rotor system of cylindrical roller bearings is studied in detail.Its critical speed is calculated by a new calculation method with roller bearing stiffness and dampingThe influences of bearing parameters, such as the roller length, rotor mass, distance between the bearingsRegular curves of the relationship between the geometric parameters and the system critical speed areThis means that an oil film will decrease the critical rotational speed of the rotor system.

Keywords： roller bearing     bearing-rotor system     design value     critical rotational speed    

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New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 461-473 doi: 10.1007/s11465-019-0525-2

Abstract: The purpose of this work is to develop a new analysis model for angular-contact, ball-bearing systemsThe new analysis model is suitable for static and modal analyses of rotor-bearing systems.

Keywords： rotor-bearing system     rolling element bearing     plate theory     finite element analysis    

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Design and R&D Progress of China Lead-Based Reactor for ADS Research Facility Review

Yican Wu

Engineering 2016, Volume 2, Issue 1,   Pages 124-131 doi: 10.1016/J.ENG.2016.01.023

Abstract: Chinese Academy of Sciences launched an engineering project to develop an accelerator-driven subcritical systemThe China Lead-based Reactor (CLEAR), proposed by the Institute of Nuclear Energy Safety Technology,In order to validate and test the key components and integrated operating technology of the lead-basedreactor, the lead alloy-cooled non-nuclear reactor CLEAR-S, the lead-based zero-power nuclear reactorCLEAR-0, and the lead-based virtual reactor CLEAR-V are under realization.

Keywords： Accelerator-driven subcritical system (ADS)     China Lead-based Reactor (CLEAR)     Lead-bismuth eutectic (LBE    

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Latest research progress for LBE coolant reactor of China initiative accelerator driven system project

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 810-831 doi: 10.1007/s11708-021-0760-1

Abstract: China’s accelerator driven subcritical system (ADS) development has made significant progress duringconstruction and operation of the international prototype of ADS superconducting proton linac, the lead-basedzero-power facility VENUS-II and the comprehensive thermal-hydraulic and material test facilities for LBE (leadThe China initiative Accelerator Driven System (CiADS) is the next facility for China’s ADS program,

Keywords： LBE (lead bismuth eutectic) coolant reactor     China initiative Accelerator Driven System (CiADS) project    

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Evaluation of the compatibility between rubber and asphalt based on molecular dynamics simulation

Fucheng GUO, Jiupeng ZHANG, Jianzhong PEI, Weisi MA, Zhuang HU, Yongsheng GUAN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 435-445 doi: 10.1007/s11709-019-0603-x

Abstract: Using of rubber asphalt can both promote the recycling of waste tires and improve the performance ofStorage stability of asphalt and rubber is related to the compatibility and also influenced by rubbercompatibility between rubber and asphalt as well as the influence of rubber content on compatibility.between asphalt and cis-polybutadiene rubber (BR) is the best, followed by styrene-butadiene rubber(SBR), and natural rubber (NR) is the worst.

Keywords： rubber asphalt     compatibility     rubber content     molecular dynamics simulation    

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ISA-YMG Smelting Process for Lead Bullion

Wang Jikun,Zhou Tingxi,Feng Guilin

Strategic Study of CAE 2004, Volume 6, Issue 4,   Pages 61-66

Abstract:

This paper reviews the history of the extractive metallurgy of lead and describes the characteristicsof modern lead smelting technologies.In view of the present situation of lead bullion smelting in China, and on the basis of years' researchon the treatment of high-lead slag by YMG, the paper introduces the ISA-YMG smelting process for lead

Keywords： ISA oxidation smelting of lead     high-lead slag     YMG reduction smelting of lead     new smelting process forlead bullion    

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Modeling limit force capacities of high force to volume lead extrusion dampers

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 609-622 doi: 10.1007/s11709-021-0724-x

Abstract: Lead extrusion dampers are supplemental energy-dissipation devices that are used to mitigate seismicThe derived equations are strictly functions of HF2V device geometric parameters, lead material properties

Keywords： extrusion     lead dampers     upper and lower bound     analytical modelling     limit force    

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Removal of lead from aqueous solution by hydroxyapatite/manganese dioxide composite

Lijing DONG,Zhiliang ZHU,Yanling QIU,Jianfu ZHAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 28-36 doi: 10.1007/s11783-014-0722-5

Abstract: adsorbent, hydroxyapatite/manganese dioxide (HAp/MnO ), has been developed for the purpose of removing leadcoexistent calcium or magnesium cations were found to have no significant influence on the removal of leadexperimental results indicate that HAp/MnO composite may be an effective adsorbent for the removal of lead

Keywords： lead     composite materials     manganese dioxide     hydroxyapatite     adsorption    

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Analysis of stability and nonlinear response of rotor system with elliptical sliding bearing supports

LU Yanjun, LIU Heng, YU Lie, LI Qi, JIANG Ming, ZHANG Zhiyu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 37-45 doi: 10.1007/s11465-007-0006-x

Abstract: presented to calculate equilibrium position and critical speed corresponding to Hopf bifurcation point of bearing-rotorsystem, as by-product dynamic coefficients of bearing are obtained.The timescale, i.e., the unknown whirling period of Hopf bifurcation solution of bearing-rotor systemThe nonlinear unbalanced periodic responses of the system are obtained by using PNF method and path-followingThe numerical results revealed the rich and complex nonlinear behavior of the system, such as periodic

Keywords： computational     corrector mechanism     predictor corrector     multisolution     quasiperiodic    

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Parametric study on seismic performance of self-centering reinforced concrete column with bottom-placed rubber

Frontiers of Structural and Civil Engineering   Pages 1145-1162 doi: 10.1007/s11709-023-0945-2

Abstract: reinforced concrete (RC) moment-resisting frame structures, a novel self-centering RC column with a rubberFor the column, the longitudinal reinforcement dissipates seismic energy, the rubber layer allows the

Keywords： seismic resilience     self-centering     rubber layer     flag-shaped hysteresis loop     parametric study    

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Performance investigation on ultrasonic levitation axial bearing for flywheel storage system

Taijiang PENG, Zhigang YANG, Junwu KAN, Fengjun TIAN, Xiaohong CHE,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 415-419 doi: 10.1007/s11465-009-0051-8

Abstract: The bearing is an important basic mechanical part for supporting a shaft.A flywheel storage system needs a type of noncontact support bearing to enhance the speed of the axisA magnetic suspension bearing is one type of noncontact bearing but has electromagnetic interferenceBased on the performance research of ultrasonic levitation technology, a novel noncontact bearing calledultrasonic bearing is presented, which consists of a special piezoelectric vibrator supporting the load

Keywords： ultrasonic bearing     flywheel storage system     piezoelectric ceramic     piezoelectric vibrator    

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Using thermodynamic parameters to study self-healing and interface properties of crumb rubber modified

Dongliang HU, Jianzhong PEI, Rui LI, Jiupeng ZHANG, Yanshun JIA, Zepeng FAN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 109-122 doi: 10.1007/s11709-019-0579-6

Abstract: The thermodynamic property of asphalt binder is changed by the addition of crumb rubber, which in turninfluences the self-healing property as well as the cohesion and adhesion within the asphalt-aggregate systemThis study investigated the self-healing and interface properties of crumb rubber modified asphalt (CRMAThe self-healing capability of CRMA is found to decrease as the rubber content increases.The asphalt-Al O interface with higher rubber content has stronger adhesion and moisture stability.

Keywords： crumb rubber modified asphalt     surface free energy     self-healing     interface properties     molecular dynamics    

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The Energy-saving Technology for Solution Polymerization of Synthetic Rubber and the Development of Eenergy-savingRubber

Cao Xianghong,Zhang Aimin

Strategic Study of CAE 2001, Volume 3, Issue 7,   Pages 59-63

Abstract:

The article summarized the energy-saving technology for solution polymerization of synthetic rubberand the development of the energy-saving rubber in Beijing Yanshan Petrochemical Co., Ltd.Through improving the catalytic system, enhancing the reaction speed, hence increasing the produce ofBYPC is now working on the direct devolatilization of the rubber solution and the gas phase polymerizationof Poly-butadiene rubber.

Keywords： solution polymerization     synthetic rubber     energy-saving     energy-saving rubber    

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Title Author Date Type Operation

A combined control strategy using tuned liquid dampers to reduce displacement demands of base-isolated structures: a probabilistic approach

Parham SHOAEI, Houtan Tahmasebi OROMI

Journal Article

Challenges and Development Strategies of China’s Natural Rubber

Huang Zongdao

Journal Article

Vibratory behaviors of Jeffcott system on cylindrical roller bearings

Hao WU, Jianwen WANG, Qi AN

Journal Article

New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Journal Article

Design and R&D Progress of China Lead-Based Reactor for ADS Research Facility

Yican Wu

Journal Article

Latest research progress for LBE coolant reactor of China initiative accelerator driven system project

Journal Article

Evaluation of the compatibility between rubber and asphalt based on molecular dynamics simulation

Fucheng GUO, Jiupeng ZHANG, Jianzhong PEI, Weisi MA, Zhuang HU, Yongsheng GUAN

Journal Article

ISA-YMG Smelting Process for Lead Bullion

Wang Jikun,Zhou Tingxi,Feng Guilin

Journal Article

Modeling limit force capacities of high force to volume lead extrusion dampers

Journal Article

Removal of lead from aqueous solution by hydroxyapatite/manganese dioxide composite

Lijing DONG,Zhiliang ZHU,Yanling QIU,Jianfu ZHAO

Journal Article

Analysis of stability and nonlinear response of rotor system with elliptical sliding bearing supports

LU Yanjun, LIU Heng, YU Lie, LI Qi, JIANG Ming, ZHANG Zhiyu

Journal Article

Parametric study on seismic performance of self-centering reinforced concrete column with bottom-placed rubber

Journal Article

Performance investigation on ultrasonic levitation axial bearing for flywheel storage system

Taijiang PENG, Zhigang YANG, Junwu KAN, Fengjun TIAN, Xiaohong CHE,

Journal Article

Using thermodynamic parameters to study self-healing and interface properties of crumb rubber modified

Dongliang HU, Jianzhong PEI, Rui LI, Jiupeng ZHANG, Yanshun JIA, Zepeng FAN

Journal Article

The Energy-saving Technology for Solution Polymerization of Synthetic Rubber and the Development of Eenergy-savingRubber

Cao Xianghong,Zhang Aimin

Journal Article