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Study of an artificial boundary condition based on the damping-solvent extraction method

Qiang XU, Jianyun CHEN, Jing LI, Mingming WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 281-287 doi: 10.1007/s11709-012-0167-5

Abstract: A new artificial boundary condition for time domain analysis of a structure-unlimited-foundation systemThe boundary condition was based on the damping-solvent extraction method.The principle of the damping-solvent extraction method was described.An artificial boundary condition was then established by setting two spring-damper systems and one artificialdamping limited region.

Keywords： damping-solvent extraction method     structure-unlimited-foundation system     spring-damper system     artificialdamping limited region     finite element method    

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Emergent limited perioperative transesophageal echocardiography: should new guidelines exist for limited

Yong G. Peng, Gregory M. Janelle

Frontiers of Medicine 2012, Volume 6, Issue 3,   Pages 332-337 doi: 10.1007/s11684-012-0212-8

Abstract:

Bedside limited echocardiography, or focused cardiac ultrasound, continues to gain popularity in many

Keywords： transesophageal echocardiography     curriculum     competency training     hemodynamic instability    

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Highlights of special issue on ‘Agriculture in Water-Limited Areas’

Pute WU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 123-125 doi: 10.15302/J-FASE-2017147

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Development of rocking constraint device with vertical damping capacity for three-dimensional base-isolated

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 350-367 doi: 10.1007/s11709-022-0923-0

Abstract: 3D) base-isolated frame structures by connecting a custom-designed cylinder pair to provide vertical dampingwith replaceable damping components installed outside the cylinders when the superstructure undergoesTheoretical formulas for calculating the damping and rocking constraint stiffness of the RCD are proposedThe test results show that the cylinder without orifices on its piston can provide the desired dampingwith a replaceable damping component, and that the RCD can effectively suppress rocking.

Keywords： three-dimensional isolation     rocking behavior     rocking constraint device     replaceable damping component    

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Bandwidth-limited active suspension controller for an off-road vehicle based on co-simulation technology

FENG Jinzhi, ZHENG Songlin, YU Fan

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 111-117 doi: 10.1007/s11465-008-0020-7

Abstract: This paper presents the design process of a controller for bandwidth-limited active hydro-pneumatic suspensionSecond, a combined PID and fuzzy controller is designed for the bandwidth-limited active suspension system

Keywords： co-simulation technology     exchange interface     conventional     bandwidth-limited     algorithm    

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Approximation of structural damping and input excitation force

Mohammad SALAVATI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 244-254 doi: 10.1007/s11709-016-0371-9

Abstract: The more sensitive parameter to the damage is the damping behavior of the structure.The complexity of structural damping mechanisms has made this parameter to be one of the ongoing researchDespite all the difficulties in the modeling of damping, there are some approaches like as linear andIn the presence of a mathematical model of the damping mechanisms, it is possible to estimate the dampingIn this paper model-based damping approximation method and a model-less structural input estimation are

Keywords： structural modal parameters     damping identification method     input excitation force identification     Inverse    

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Variable stiffness and damping magnetorheological isolator

Yang ZHOU, Xingyu WANG, Xianzhou ZHANG, Weihua LI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 310-315 doi: 10.1007/s11465-009-0039-4

Abstract: the development and characterization of a magnetorheological (MR) fluid-based variable stiffness and dampingExperimental results indicate that both the stiffness and damping capability of the developed MR isolator

Keywords： magnetorheological (MR) fluid     stiffness     damping     mathematical model     dynamic performance     parameter identification    

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Two-stage scheduling on batch and single machines with limited waiting time constraint

Zhongshun SHI, Zewen HUANG, Leyuan SHI

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 368-374 doi: 10.15302/J-FEM-2017034

Abstract: This study addresses the problem of two-stage scheduling on batch and single machines with limited waiting

Keywords： batch machine     flow shop     makespan     limited waiting time    

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Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate resources—a

Torsten MÜLLER, Fusuo ZHANG

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 313-320 doi: 10.15302/J-FASE-2019282

Abstract: Phosphate is a limited essential nutrient, however, with very uneven distribution worldwide.research training group “Adaptation of Chinese and German maize-based food-feed-energy systems to limitedThe interdisciplinary and complementary research is driven by the hypothesis that under phosphate limited

Keywords： international research training group     limited resources     maize     phosphate    

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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: To expand their usage, their inherent damping and layout sensitivity to seismic performance are investigatedResults of preliminary analysis show that a green roof soil can increase localized damping by 2.5% underThe increased damping in the green roof soil is beneficial to the structural performance, i.e., it reduces

Keywords： green infrastructure     green roof     structural resilience     seismic design    

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Fluid damping clearance in a control valve of injector

ZHANG Jianming, ZHANG Weigang, YANG Bing, WANG Yawei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 439-441 doi: 10.1007/s11465-007-0075-x

Abstract: A force model of a control valve of injector is set up, and the changes of the fluid damping clearanceResults indicate that a damping clearance of 0.02–0.03 mm between the poppet and the valve guide is the

Keywords： control     computational     bouncing     CFD     excessive control    

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A method of analysis for modal aero-damping of vibrating blade in incompressible flow

Jun XING, Lin LI,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 465-471 doi: 10.1007/s11708-009-0037-6

Abstract: By establishing a research model for aero-damping in a uniform incoming flow, the three-dimension analyticalalgorithm of the modal aero-damping based on the equivalent viscous damping principle was establishedThe algorithm, which is suited for low-speed flow, to compute aero-damping is based on classical liftAccording to the analytical equations, the modal aero-damping ratio for different nature frequenciesThe results show that the aero-damping cannot be neglected comparing with the structure damping.

Keywords： compressor     different     three-dimension analytical     classical     low-speed    

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Dynamics of structural systems with various frequency-dependent damping models

Li LI,Yujin HU,Weiming DENG,Lei LÜ,Zhe DING

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 48-63 doi: 10.1007/s11465-015-0330-5

Abstract:

The aim of this paper is to present the dynamic analyses of the system involving various damping modelsover some damping kernel functions.By choosing suitable damping kernel functions of frequency-dependent damping model, it may be derivedA brief review of literature on the choice of available damping models is presented.It is shown that in the case of non-deficient systems with various damping models, the modal analysis

Keywords： damping     viscoelasticity     dynamic analysis     mode superposition method     Fourier transform method    

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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 scope of application for the classical damping theory is analyzed and the necessity of the researchon mode-superposition method for non-classical damping is presented.approach for calculation of seismic response of the non-classically damped system with overcritical damping

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

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Dynamic characteristics analysis of active constrained layer damping plate with various boundary conditions

Jing LU, Yu XIANG, Qiao NI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 449-455 doi: 10.1007/s11465-011-0240-0

Abstract: layer wised principle, the integrated first order differential equation of an active constrained layer damping

Keywords： active constrained layer damping (ACLD) plate     dynamic characteristics     semi-analytical method     extended    

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Title Author Date Type Operation

Study of an artificial boundary condition based on the damping-solvent extraction method

Qiang XU, Jianyun CHEN, Jing LI, Mingming WANG

Journal Article

Emergent limited perioperative transesophageal echocardiography: should new guidelines exist for limited

Yong G. Peng, Gregory M. Janelle

Journal Article

Highlights of special issue on ‘Agriculture in Water-Limited Areas’

Pute WU

Journal Article

Development of rocking constraint device with vertical damping capacity for three-dimensional base-isolated

Journal Article

Bandwidth-limited active suspension controller for an off-road vehicle based on co-simulation technology

FENG Jinzhi, ZHENG Songlin, YU Fan

Journal Article

Approximation of structural damping and input excitation force

Mohammad SALAVATI

Journal Article

Variable stiffness and damping magnetorheological isolator

Yang ZHOU, Xingyu WANG, Xianzhou ZHANG, Weihua LI

Journal Article

Two-stage scheduling on batch and single machines with limited waiting time constraint

Zhongshun SHI, Zewen HUANG, Leyuan SHI

Journal Article

Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate resources—a

Torsten MÜLLER, Fusuo ZHANG

Journal Article

Effects of green roof damping and configuration on structural seismic response

Journal Article

Fluid damping clearance in a control valve of injector

ZHANG Jianming, ZHANG Weigang, YANG Bing, WANG Yawei

Journal Article

A method of analysis for modal aero-damping of vibrating blade in incompressible flow

Jun XING, Lin LI,

Journal Article

Dynamics of structural systems with various frequency-dependent damping models

Li LI,Yujin HU,Weiming DENG,Lei LÜ,Zhe DING

Journal Article

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

ZHOU Xiyuan, YU Ruifang

Journal Article

Dynamic characteristics analysis of active constrained layer damping plate with various boundary conditions

Jing LU, Yu XIANG, Qiao NI

Journal Article