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Parametric control of structural responses using an optimal passive tuned mass damper under stationary Gaussian white noise excitations

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 a seismic damping device is outlined, highlighting the parametric optimization approach for displacement and acceleration control. The theory of stationary random processes and complex frequency response functions are explained and adopted. For the vibration control of an undamped structure, the optimal parameters of a TMD, such as the optimal tuning frequency and optimal damping ratio, to stationary Gaussian white noise acceleration are investigated by using a parametric optimization procedure. For damped structures, a numerical searching technique is used to obtain the optimal parameters of the TMD, and then the explicit formulae for these optimal parameters are derived through a sequence of curve-fitting schemes. Using these specified optimal parameters, several different controlled responses are examined, and then the displacement and acceleration based control effectiveness indices of the TMD are examined from the view point of RMS values. From the viewpoint of the RMS values of displacement and acceleration, the optimal TMDs adopted in this study shows clear performance improvements for the simplified model examined, and this means that the effective optimization of the TMD has a good potential as a customized target response-based structural strategy.

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

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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: Structural dynamic characteristics are the most significant parameters that play a decisive role in structural damage assessment. 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 research topics. Despite all the difficulties in the modeling of damping, there are some approaches like as linear and nonlinear models which are described as the energy dissipation throughout viscous, material or structural hysteretic and frictional damping mechanisms. In the presence of a mathematical model of the damping mechanisms, it is possible to estimate the damping ratio from the theoretical comparison of the damped and un-damped systems. On the other hand, solving the inverse problem of the input force estimation and its distribution to each SDOFs, from the measured structural responses plays an important role in structural identification process. In this paper model-based damping approximation method and a model-less structural input estimation are considered. The effectiveness of proposed methods has been carried out through analytical and numerical simulation of the lumped mass system and the results are compared with reference data. Consequently, high convergence of the comparison results illustrates the satisfactory of proposed approximation methods.

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

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Rethinking of geological disaster control at the anniversary of the Wenchuan Earthquake

Lu Yaoru

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 36-43

Abstract:

The big Wenchuan Earthquake has passed for a year, but the huge disastercaused by the earthquake cannot be forgotten yet.The scientific development view should be better carried out and the earthquake mechanism should be analyzed

Keywords： Wenchuan Earthquake     the earthquake history of Chuan-Dian area     geological disaster     earthquake mechanism    

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Prediction and thoughts of the Wenchuan large earthquake

Geng Qingguo

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 123-128

Abstract:

According to many years of earthquake prediction exploring work basedon analysis of drought -earthquake relations and ordered strong earthquake activities and the methodthe Sichuan Abazhou area, and revealed the main points of the "Urgent advice to enhance strong earthquake

Keywords： Wenchuan Large Earthquake prediction     drought-earthquake relations     strong earthquake activities order    

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The phenomena based on the before Wenchuan Earthquake, the characteristic of large scale and deep layeron dynamic force of earthquake occurrence has been recognized

Xu Shaoxie

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 16-18

Abstract: text-align: justify;">The characteristic of large scale and deep layer on dynamic force of Wenchuan EarthquakeThe seismicity before Wenchuan Earthquake of May 12, 2008 has been studied, by using the data from 1977activity enhanced in deep layer, are important phenomena before Wenchuan Earthquake.Such characteristics have already been found in the phenomena before Tangshan Earthquake in 1976.Since the disaster of a great earthquake is very serious, it should be enhanced to collect and study

Keywords： Wenchuan Earthquake     the characteristic of large scale and deep layer on dynamic force of earthquakeoccurrence     earthquake prediction    

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Destructive Earthquakes Are Predictable——The Physical Model of Earthquake Gestation and the Signal of

Sun Wei

Strategic Study of CAE 2007, Volume 9, Issue 7,   Pages 7-17

Abstract:

What is discussed here is that the earthquake precursor have their ownAn analytic method is brought forward for tracing the information on the warning signs of an earthquakeAlso, earthquake prediction is preactically divided into stages, making it possible to realize the predicting

Keywords： destructive earthquake     quake-breeding physical model     signals before an earthquake     earthquake precursor    

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Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 50-53

Abstract:

A high quality excitation system not only plays an important role in the stability of power systemIn this paper, a PWM rectifier is applied to excitation system of synchronous generators.;s supply by achieving low harmonic current conversion and improving high power factor transform of excitation

Keywords： PWM     high power factor     excitation system     Matlab simulation    

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The scientific faith that earthquake is predictable should be insisted—the successful prediction of threestrong aftershocks of Wenchuan Earthquake

Wang Chengmin

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 107-110

Abstract:

Is earthquake predictable?This question has been discussed a lot by earthquake researchers and common people after the WenchuanEarthquake.The specialists in Chinese Earthquake Prediction Consultation Committee started the aftershockprediction research after the earthquake to support emergency rescue and disaster relief with practicalon May 18 in Jiangyou, M 6.4 earthquake on May 25 in Qingchuan and M 6.1 earthquake on August 1 in Beichuan

Keywords： Wenchuan Earthquake     aftershock of Wenchuan Earthquake     earthquake short -impending prediction    

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Statistic and review of China’s earthquake prediction score

Gao Jianguo

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 129-131

Abstract:

Earthquake is difficult to forecast, but it doesn't happen withoutsigns or unknown,our country has the case summary for every large earthquake.Statistics clearly showmiddle -term, short -term or imminent earthquakes in the last 40 years.Therefore, success in Chinese earthquakeprediction could not be denied only because of failure in Wenchuan Earthquake prediction.China'searthquake prediction score should be positive,and Wenchuan Earthquake is not a "strange shock&

Keywords： earthquake     earthquake prediction     nearly 30 years’earthquake prediction statistics in china    

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Short-term and impending precursor of sand layer stress in Wenchuan Earthquake

Wang Baoyu,Tong Xiaohui,Sun Xiaoming ,Sun Wei

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 146-152

Abstract:

An earthquake preparation physical model was established based on observationdata of sand layer stress instrument in Changping and Xiji, Beijing, earthquake precursor in the past30 years observed by this instrument and precursor of Indonesia Earthquake (M =8.7) on December 26,2004.The short-term and impending precursor of Wenchuan Earthquake recorded by the sand layer stressinfrared and other testing methods in the aspect of time, had very obvious characters of impending earthquake

Keywords： Wenchuan Earthquake     sand layer stress instrument     earthquake preparation physical model of sand layerstress     impending earthquake signal    

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Lessons learnt from the great Sichuan Wenchuan Earthquake

Xie Lili

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 28-35

Abstract: text-align: justify;">This paper presents the major lessons learnt from the recently occurred devastating earthquakeIt discussed some bottle-neck questions existing in the current earthquake disaster prevention work oflow quality construction in both rural and town area, seismic hazard assessment and seismic zoning, earthquakeinduced geological hazard, and earthquake prediction etc., and pointed out that the civil engineeringprevention method is the best choice for the solution of reducing earthquake losses and mitigating earthquake

Keywords： Wenchuan Earthquake     earthquake prevention and mitigation     prevention first     civil engineeringThoughts on    

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Neural network control for earthquake structural vibration reduction using MRD

Khaled ZIZOUNI, Leyla FALI, Younes SADEK, Ismail Khalil BOUSSERHANE

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1171-1182 doi: 10.1007/s11709-019-0544-4

Abstract: Structural safety of building particularly that are intended for exposure to strong earthquake loads

Keywords： MR damper     semi-active control     earthquake vibration     neural network     linear quadratic control    

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A subband excitation substitute based scheme for narrowband speech watermarking Article

Wei LIU, Ai-qun HU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 5,   Pages 627-643 doi: 10.1631/FITEE.1601503

Abstract: imposed on a passband watermark signal by forcing its power level to be the same as the original passband excitation

Keywords： Analysis filter     Linear prediction     Narrowband speech watermarking     Passband excitation replacement    

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Pondering over the scientific thinking of earthquake prediction from the miss report of Wenchuan Earthquake—re-discussingLi Siguang’s earthquake prediction thought

Zhao Wenjin

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 4-15

Abstract:

According to the experience and problems of seismic monitoring and earthquakeprediction for many years in China, it was discussed the earthquake mechanism, preliminary methods forprediction research and the mechanism and miss report of Wenchuan Earthquake, analyzed prediction precursorof short-term and impending earthquake, seismometry application limitation and ground stress transferand track, and put forward 9 suggestions for future earthquake prediction.

Keywords： Wenchuan Earthquake     earthquake prediction     ground stress     Li Siguang    

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Earthquake Resistant Engineering and Application of Seismic Zonation Map of China

Shi Zhenliang,Li Yuche,Zhang Xiaodong

Strategic Study of CAE 2002, Volume 4, Issue 8,   Pages 20-25

Abstract: It is very important for industry and structure to fortify against earthquake.In the paper the outline of seismicity in China, the criteria for fortification against earthquake andSome geological disasters caused by destructive earthquake, such as earthquake-caused collapse and landslide, liquefaction of saturated soil and earthquake fault and so on, are also presented.

Keywords： seismic zonation     earthquake resistant engineering     earthquake-caused geological disaster    

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Title Author Date Type Operation

Parametric control of structural responses using an optimal passive tuned mass damper under stationary Gaussian white noise excitations

Min-Ho CHEY, Jae-Ung KIM

Journal Article

Approximation of structural damping and input excitation force

Mohammad SALAVATI

Journal Article

Rethinking of geological disaster control at the anniversary of the Wenchuan Earthquake

Lu Yaoru

Journal Article

Prediction and thoughts of the Wenchuan large earthquake

Geng Qingguo

Journal Article

The phenomena based on the before Wenchuan Earthquake, the characteristic of large scale and deep layeron dynamic force of earthquake occurrence has been recognized

Xu Shaoxie

Journal Article

Destructive Earthquakes Are Predictable——The Physical Model of Earthquake Gestation and the Signal of

Sun Wei

Journal Article

Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Journal Article

The scientific faith that earthquake is predictable should be insisted—the successful prediction of threestrong aftershocks of Wenchuan Earthquake

Wang Chengmin

Journal Article

Statistic and review of China’s earthquake prediction score

Gao Jianguo

Journal Article

Short-term and impending precursor of sand layer stress in Wenchuan Earthquake

Wang Baoyu,Tong Xiaohui,Sun Xiaoming ,Sun Wei

Journal Article

Lessons learnt from the great Sichuan Wenchuan Earthquake

Xie Lili

Journal Article

Neural network control for earthquake structural vibration reduction using MRD

Khaled ZIZOUNI, Leyla FALI, Younes SADEK, Ismail Khalil BOUSSERHANE

Journal Article

A subband excitation substitute based scheme for narrowband speech watermarking

Wei LIU, Ai-qun HU

Journal Article

Pondering over the scientific thinking of earthquake prediction from the miss report of Wenchuan Earthquake—re-discussingLi Siguang’s earthquake prediction thought

Zhao Wenjin

Journal Article

Earthquake Resistant Engineering and Application of Seismic Zonation Map of China

Shi Zhenliang,Li Yuche,Zhang Xiaodong

Journal Article