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system identification shaking table test

Performance envelopes of the shaking table From control point of view the shaking table and the test specimen must be viewed as one complete system whose frequency response will change with each specimen Adam 1997 The complex dynamics of the shaking table systems arises from multiples linear and nonlinear dynamic

April 18,2020 by: Berg Jackson
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Performance envelopes of the shaking table From control point of view the shaking table and the test specimen must be viewed as one complete system whose frequency response will change with each specimen Adam 1997 The complex dynamics of the shaking table systems arises from multiples linear and nonlinear dynamic

The dynamic identification of the structure during the shaking table tests was obtained by several techniques of Experimental Modal Analysis EMA such as FRF FDD and EFDD To such purpose Displacement Data Processing DDP of a large number of markers of the 3DVision the passive 3D motion capture system installed at the ENEA laboratory was

The objective of the paper is to present a method for modal parameter identification of model structure in shaking table test by using the seismic response records The method includes two key steps Firstly the adaptive online system identification method is adopted to investigate whether the timevarying response occurs during the process of vibration and the acceleration response record

A full scale fivestory reinforced concrete building was built and tested on the NEESUCSD shake table The purpose of this test was to study the response of the structure and nonstructural components and systems NCSs and their dynamic interaction during seismic excitations of different intensities

The validity of the proposed method is verified through the response prediction and modal contributions of the models obtained from model updating based on dynamic displacement from a shaking table test for a sheartype test frame

changes with the generation dissipation of excess pore water pressure during tor he shaking via the timefrequency analyses and system identification technique Shaking Table Test Sand specimen and model pile Clean fine silica sand s 265 G emax

Keywords acceleration magnified effect damping system motion state shaking table test stickslip motion whiplash effect References Adhikari S 2005 Identification of damping

The objective of the paper is to present a method for modal parameter identification of model structure in shaking table test by using the seismic response

In this study a scheme integrated with deterministic stochastic subspace system identification and the method of damage localization vector DLV is proposed for damage detection of structures based on seismic response data A series of shaking table tests has been conducted in National Center for Research on Earthquake Engineering NCREE Taiwan

Experimental identification of the six DOF CGS Algeria shaking table system 3 Sensors and data acquisition system Model parameters that are measured in this study were determined experimentally from the shaking table feedbacks by conducting bare table tests The instrumentation used in the tests

The purpose of this paper is to develop an application implementable to a laptop computer by which we can evaluate a structural system from its responses in situ To show applicability of the application we analyze the data obtained by a shaking table experiment of a fivestory building model Four Lead Rubber Bearings LRBs are placed at the four corner of 1st and 3rd stories of the model

parameter identification and analysis of the thirdstage test PS10H 2 Description of the Shaking Table Test The experimental setup procedure and results of the PS10H shaking table model tests are described in detail in Li et al 2006 Hereafter only the main points relevant to the present analysis are summarized 21 Similitude Model Design

Shaking table tests on twelve reinforced concrete model columns are described The system identification method is used to process the test data and t

The control parameter of shaking table is one of the key elements which significant influence on the system control performance An algorithm which uses the model of system identification to theoretically calculate the control parameter is put forward and then obtains the optimal threeparametric control parameter based on theoretical calculation

Nov 15 2013 The preshaking method can be easily used for inflight subsurface exploration Vs profile measurements and inflight system identification of soilstructure systems natural frequency measurements A soilpile centrifuge model is used to demonstrate the versatility of preshaking during a routine centrifuge shaking table test

Typically a shaking table test system is composed of one or multiple servohydraulic actuators a hydraulic power supply a rigid table and a control system The purpose of the control system of a shaking table is to reproduce reference accelerations that were recorded during an earthquake

Student Manual 3 SHAKING TABLE DEMONSTRATION OF DYNAMIC RESPONSE OF BASEISOLATED BUILDINGS 10 INTRODUCTION 11 Objective The objective of this lab is to expose undergraduate civil engineering students to the topics of structural dynamics and earthquake engineering topics which are rarely introduced at the

California Institute of Technology Mail Code 10444 1201 E California Blvd Pasadena California 91125 System identification is an effective tool for developing analytical models from experi with the values obtained from a shaking table test of a 03 scale model

1 Multisupport excitation test of singlepylon cablestayed bridge using shaking table Yeong I Gong1 Yong Myung Park2 Hyoung Suk Choi3 Seongdo Kim4 and Jin Hwan Cheung5 1Managing Director Jungshin EnC Co Ltd Bujeon 168451 Busanjin Busan 614845 South Korea

Shaking table experiment on a steel storage tank with multiple friction pendulum bearings 879 where Tc is the convective period Ti is the impulsive period D is the diameter H is the liquid level Ci is a nondimensional coefficient tu is the wall thickness is the liquid density and

Nov 11 2006 A microconcrete model representing the highrise building was constructed in 120 scale Shaking table tests were conducted and the model was subjected to earthquake actions representing minor moderate major and supermajor earthquakes for a region of moderate seismicity with basic seismic intensity at the VIIth degree pursuant to GB500112001

purposes In their study an experimental identification of the shaking table and its subsystems namely servovalve spool dynamics nominal flow table effective mass oil column and table foundation dynamics was performed Subsequently a realistic model of the shaking table using Simulink was obtained User Datagram Protocol UDP which is the communication mechanism

System identification of timber masonry walls using shaking table test NASAADS Dynamic study is important in order to design repair and rehabilitation of structures It has played an important role in the behavior characterization of structures such as bridges dams high rise buildings etc

System identification of timber masonry w alls using shaking table test Timir B Roy a Luis Guerreiro b Ashutosh Bagchi a a Concordia University 1455 De Maisonneuve Blvd W

The shaking table test of a soilstructure interaction system under hard soil conditions with an average shear wave velocity of more than 153 ms is briefly presented in this paper and the soil dynamic characteristics including the shear moduli and damping ratio are identified using the acceleration results

At present the structural seismic research methods include the pseudostatic test pseudodynamic test and shaking table test The test method of the shaking table test can recreate the structural response and seismic oscillation in the lab accurately and reproduce the whole process of seismic oscillation effect or artificial effect in real time

Aug 25 2010 Finally the modified BoucWen hysteretic model and the system identification process are employed to the shaking table test data to evaluate the physical parameters including the stiffness degradation the strength deterioration and the pinching hysteresis

Jul 21 2004 Nonlinear structural system identification using shaking table test data of fivestory model building Nonlinear structural system identification using shaking table test data of fivestory model Ogiyama Kazuki 20040721 000000 The purpose of this paper is to develop an application implementable to a laptop computer by which we can evaluate a structural system from its responses

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