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Evaluation of a developed bypass viscous damper performance

Mahrad FAHIMINIA, Aydin SHISHEGARAN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 773-791 doi: 10.1007/s11709-020-0627-2

Abstract: In this study, the dynamic behavior of a developed bypass viscous damper is evaluated.Bypass viscous damper has a flexible hose as an external orifice through which the inside fluid transferAccordingly, the viscosity coefficient of the damper can be adjusted using geometrical dimensions ofMoreover, the external orifice acts as a thermal compensator and alleviates viscous heating of the damperNonlinear time history analyses revealed that the hospital with viscous damper experiences less structural

Keywords： developed viscous damper     external orifice     energy dissipation     seismic behavior     CFD model of viscous damper    

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Wind-induced vibration control of Hefei TV tower with fluid viscous damper

Zhiqiang ZHANG , Aiqun LI , Jianping HE , Jianlei WANG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 249-254 doi: 10.1007/s11709-009-0038-x

Abstract: The Hefei TV tower is taken as an analytical case to examine the control method with a fluid viscousdamper under wind load fluctuation.Finally, a dynamic model is proposed to study the wind-induced vibration control analysis using viscouswind-induced responses and the wind vibration input energy of the tower are decreased greatly by using a fluid viscousdamper, and the peak acceleration responses of the upper turret is reduced by 43.4%.

Keywords： high-rise structure     wind-induced response     fluid viscous damper     vibration control    

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Seismic performance of steel MRF building with nonlinear viscous dampers

Baiping DONG,James M. RICLES,Richard SAUSE

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3,   Pages 254-271 doi: 10.1007/s11709-016-0348-8

Abstract: consisting of a moment resisting frame (MRF) with reduced beam sections (RBS), and a frame with nonlinear viscousThe DBF with nonlinear viscous dampers was designed to control the lateral drift demands.

Keywords： seismic response     steel MRF     nonlinear viscous damper     design basis earthquake     real-time hybrid simulation    

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Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 93-96 doi: 10.1007/s11705-009-0112-x

Abstract: A new static mixer Cross-over-Disc has been invented to strip off the boundary layer and to make strong radial mixing. The pressure drop of Cross-over-Disc is 12—26 times as large as that of empty pipe with equivalent diameter and length. The mixing performance of Cross-over-Disc with 14 elements has been investigated in the viscosity range of 190—250 Pa?s by decoloration method, and the gray analysis of images shows that mixing inhomogeneity is about 7.5% and 9.4% for the mixing ratio of 5∶1 and 10∶1, respectively. Furthermore, mixing inhomogeneity for a combination of static mixing elements (four from Cross-over-Disc and three pairs from Sulzer-type) can be decreased to 2.1%—3.1% within a reasonable range of pressure drop.

Keywords： static mixer     Cross-over-Disc     pressure drop     mixing performance     high viscous fluid    

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Erratum to: Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1387-5

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Stability of an annular viscous liquid jet in compressible gases with different properties inside and

Chunji YAN, Maozhao XIE,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 198-204 doi: 10.1007/s11708-009-0054-5

Abstract: A spatial linear instability analysis is conducted on an annular viscous liquid jet injected into compressiblegases and a three-dimensional model of the jet is developed.

Keywords： liquid jet     dominant wave number     compressibility     instability    

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Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 267-280 doi: 10.1007/s11709-012-0170-x

Abstract: In this study, the structural control strategy utilizing a passive tuned mass damper (TMD) system as

Keywords： tuned mass damper     parametric optimization     passive control     white noise     earthquake excitation    

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Visible light responsive photocatalysts developed by substitution with metal cations aiming at artificial

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 568-576 doi: 10.1007/s11708-021-0774-8

Abstract: This mini-review introduces the recent work on visible-light-driven photocatalysts developed by substitution

Keywords： visible light responsive photocatalyst     water splitting     artificial photosynthesis: metal ion substitution    

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Study of steam injection technology for low permeablehigh viscous light oil reservoir

Wang Lizhi,Wang Yunlong

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 88-94

Abstract: approaches to reduce viscosity of crude oil reservoirs, increase permeability and improve flow rate of high viscousindicated suitable reservoir geological conditions for steam-flooding extraction of low permeable high viscous

Keywords： low permeability     high viscous light oil     steam-flooding extraction    

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Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 606-624 doi: 10.1007/s11709-023-0925-6

Abstract: A novel cambered surface steel tube damper (CSTD) with a cambered surface steel tube and two concave

Keywords： cambered surface steel tube damper     energy dissipation capacity     finite element model     hysteretic performance    

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Revealing Engineering Management System and Education Model in Developed Countries for Engineering Management

Jian-ya Jiang,Yang-wei Rao

Frontiers of Engineering Management 2014, Volume 1, Issue 4,   Pages 406-409 doi: 10.15302/J-FEM-2014049

Abstract: Different developed countries have differences in regulations for engineering management systems.research into engineering management systems and professional education modes between China and these developed

Keywords： engineering management system     education mode     comparative research     training improvement    

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Effect of magneto rheological damper on tool vibration during hard turning

P. Sam PAUL, A. S. VARADARAJAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 410-416 doi: 10.1007/s11465-012-0341-4

Abstract: The present investigation aims at developing a magneto rheological (MR) fluid damper for suppressingIt was observed that the use of MR fluid damper reduces tool vibration and improves the cutting performance

Keywords： tool vibration     magneto rheological damper     hard turning     surface finish     tool wear    

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Analytical study on damping performances of magnetorheological grease damper based on disk squeeze mode

Danxia ZHAO, Changrong LIAO, Qiong LIU, Jing LUO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 312-317 doi: 10.1007/s11465-011-0235-x

Abstract:

In this paper, a small displacement-type magnetorheological grease (MRG) damper based on disk squeezeTo verify rationality of analytical method, the MRG damper is designed and fabricated according to thethat the proposed analytical method is feasible and provides the reference value for designing MRG damper

Keywords： magnetorheological grease (MRG)     damper     squeeze model    

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Application of coupled multi-body dynamics–discrete element method for optimization of particle damper

Danhui DAN, Qianqing WANG, Jiongxin GONG

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 244-252 doi: 10.1007/s11709-021-0696-x

Abstract: the application of the particle damping technology to cable vibration attenuation, the rootless cable damperpaper, a coupled multi-body dynamics–discrete element method is proposed to simulate the damping of the damper–cableThe simulation results demonstrate the damping efficiency of rootless particle damper under different

Keywords： granular material     vibration control     discrete element method     particle damper     cable vibration    

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Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization method to

Nima Kamali, Abdollah Rashidi Mehrabadi, Maryam Mirabi, Mohammad Ali Zahed

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1249-6

Abstract: Abstract • Nanocomposites were prepared by adding dolomite to vinasse at different ratio. • Textural and morphological features of adsorbents were studied in detail. • CCD based RSM was used for investigation of P ion removal by nanocomposite. • The qm based on Langmuir model for modified vinasse biochar was 178.57 mg/g. • P loaded nanocomposite improved plant growth and could be utilized as P-fertilizer. The effectiveness of phosphate (P) removal from aqueous solutions was investigated by novel low-cost biochars synthesized from vinasse and functionalized with calcined dolomite. The vinasse-derived biochar, synthesized via pyrolysis at different temperatures, showed easy preparation and a large surface area. The novel vinasse biochar nanocomposites were prepared by adding dolomite to the vinasse biochars with different weight percentages (10, 20 and 30%). The characteristics of the prepared materials were identified for further understanding of the inherent adsorption mechanism between P ions and vinasse biochars. Vinasse-dolomite nanocomposite was very effective in the adsorption of P species from aqueous media. The effect of the operational factors on Vinasse-dolomite nanocomposite was explored by applying response surface methodology (RSM). According to RSM results, the optimum condition was achieved to be contact time 90 (min), 250 (mg/L) of P concentration and pH 7. Thermodynamic isotherm and kinetic studies were applied on experimental data to understand the adsorption behavior. The Vinasse-dolomite nanocomposite revealed preferential P species adsorption in the presence of co-existing anions. The P species could be recovered by 1.0 M HCl where the efficiency was not affected up to the fifth cycle. The P-loaded Vinasse-dolomite nanocomposite was successfully tested on a plant; it significantly improved its growth and proved its potency as a P-based fertilizer substitute.

Keywords： Biochar     Vinasse     Dolomite     Phosphate     Fertilizer    

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Title Author Date Type Operation

Evaluation of a developed bypass viscous damper performance

Mahrad FAHIMINIA, Aydin SHISHEGARAN

Journal Article

Wind-induced vibration control of Hefei TV tower with fluid viscous damper

Zhiqiang ZHANG , Aiqun LI , Jianping HE , Jianlei WANG ,

Journal Article

Seismic performance of steel MRF building with nonlinear viscous dampers

Baiping DONG,James M. RICLES,Richard SAUSE

Journal Article

Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Journal Article

Erratum to: Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization

Journal Article

Stability of an annular viscous liquid jet in compressible gases with different properties inside and

Chunji YAN, Maozhao XIE,

Journal Article

Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Journal Article

Visible light responsive photocatalysts developed by substitution with metal cations aiming at artificial

Journal Article

Study of steam injection technology for low permeablehigh viscous light oil reservoir

Wang Lizhi,Wang Yunlong

Journal Article

Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Journal Article

Revealing Engineering Management System and Education Model in Developed Countries for Engineering Management

Jian-ya Jiang,Yang-wei Rao

Journal Article

Effect of magneto rheological damper on tool vibration during hard turning

P. Sam PAUL, A. S. VARADARAJAN

Journal Article

Analytical study on damping performances of magnetorheological grease damper based on disk squeeze mode

Danxia ZHAO, Changrong LIAO, Qiong LIU, Jing LUO

Journal Article

Application of coupled multi-body dynamics–discrete element method for optimization of particle damper

Danhui DAN, Qianqing WANG, Jiongxin GONG

Journal Article

Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization method to

Nima Kamali, Abdollah Rashidi Mehrabadi, Maryam Mirabi, Mohammad Ali Zahed

Journal Article