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Identification of system mode parameters using response measurement only

Huo Bingyong and Yi Weijian

Strategic Study of CAE 2015, Volume 17, Issue 1,   Pages 151-160

Abstract: Harmonic parameters of a point response can be extracted by spectrum analysis using the measurementsresults calculated by discrete deconvolution techniques are further modified by the frequency domain spacecurve fitting method.Modal parameters of system just come from a combination of these corrected results.on the system dynamic performance.

Keywords： output-only response； identification of system mode parameters； space curve fitting； spectrum overlapping    

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Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 358-368 doi: 10.1007/s11465-019-0539-9

Abstract: the mechanical characteristic parameters of the pipeline hoop, such as support stiffness and dampingand amplitudes of the frequency response functions (FRFs) of a pipeline system supported by two hoopssolving the FRF of the pipeline system were provided.On the premise of selecting initial values reasonably, an inverse identification algorithm based on sensitivityAfter introducing the identified values into the analysis model, the reliability of the identification

Keywords： inverse identification     pipeline hoop     frequency response function     mechanical parameters     preload    

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Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 227-239 doi: 10.1007/s11465-020-0587-1

Abstract: In this study, the bidimensional empirical mode decomposition (BEMD) method is used to identify suchtopography representing the relative vibration between the cutter and the workpiece through feature identificationIn addition, the spatial spectrum analysis of the extracted profile is carried out.effect on the shape of the contour can be accurately identified through contour extraction and spatial spectrummorphology demonstrate the validity of the improved BEMD algorithm in realizing the relative vibration identification

Keywords： bidimensional empirical mode decomposition     spatial spectrum analysis     boundary effect     vibration identification    

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Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1082-1094 doi: 10.1007/s11709-019-0537-3

Abstract: An out-put only modal parameter identification method based on variational mode decomposition (VMD) isThe recently developed VMD technique is utilized to decompose the free decay response (FDR) of a structureThe proposed identification method can straightforwardly extract the mode shape vectors using the modalThe results of the present method are compared with those of the empirical mode decomposition-based methodstructures with closely spaced modes, sudden modal parameter variation, and amplitude-dependent modal parameters

Keywords： modal parameter identification     variational mode decomposition     civil structure     nonlinear system     closely    

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Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1331-1348 doi: 10.1007/s11709-020-0686-4

Abstract: Regression surfaces between the structural parameters and structural output features, represented byfeatures with the available parameters in the myriad numerical data set.of the Euler-Bernoulli beam as well as a highway bridge model with elastic foundations using only twoIt is expected that the proposed method will have practical applications in the identification and analysisof restored structural systems with unknown parameters and boundary coefficients.

Keywords： structural model validation     eigenvalue problem     response surface     inverse problems    

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Uncovering the evolution of tin use in the United States and its implications

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1406-6

Abstract:

• US tin use decreases as the GDP value added by manufacturing sector increases.

Keywords： Tin use     GDP     Curve fitting     Logistic model     Gompertz model    

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Optimization design of anti-seismic engineering measures for intake tower based on non-dominated sorting genetic algorithm-II

Frontiers of Structural and Civil Engineering   Pages 1428-1441 doi: 10.1007/s11709-023-0998-2

Abstract: northwest China was considered the research object, and its natural vibration characteristics and dynamic responsewere first analyzed using the mode decomposition response spectrum method based on a three-dimensionaladopted to optimize the anti-seismic scheme combination by comprehensively considering the dynamic tower response

Keywords： intake tower     NSGA-II     mode decomposition response spectrum method     anti-seismic engineering measures    

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Numeric simulation for structure’s damage identification of space truss

JI Weihong, SONG Yupu, LIANG Bing

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 423-428 doi: 10.1007/s11465-007-0072-0

Abstract: Damage detection by using the changes of dynamic parameters is a conventional damage diagnosis methodThe mode analysis technique for the axial strain change of any stick is used to detect the steel trusses

Keywords： analysis sof—ANSYS     conventional     displacement     element analysis     different    

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Mirror system based therapy for autism spectrum disorders

CHEN Wei, ZHANG Jing, DING Jun

Frontiers of Medicine 2008, Volume 2, Issue 4,   Pages 344-347 doi: 10.1007/s11684-008-0065-3

Abstract: autisms’ cognitive research and mirror systems and introduces a new hypothesis about the causes of autism spectrumASD subjects show obvious lack of the activation of the mirror system during the task of observationIt is significant to investigate the mirror system for revealing the causes of autism and it is also

Keywords： emotional cognition     observation     activation     spectrum     empirical research    

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New response surface model and its applications in aerodynamic optimization of axial compressor blade

LIU Xiaojia, NING Fangfei

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 541-549 doi: 10.1007/s11708-008-0077-3

Abstract: the axial compressor 2D blade profiles is proposed in which the blade geometries are defined with the parametersSeveral illustrations are presented to show the fitting precision of the method.A novel response surface model is proposed which regards the objective distribution function in the vicinityof a sample as normal school, and then generates the response surface function in the whole design space

Keywords： definition     objective distribution     fitting precision     combination     numerical aerodynamic    

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Experimental study of structural damage identification based on modal parameters and decay ratio of acceleration

Zhigen WU, Guohua LIU, Zihua ZHANG

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 112-120 doi: 10.1007/s11709-010-0069-3

Abstract: Three beams were gradually damaged, and then the changes of dynamic parameters were monitored from initialWith better sensibility of damage than modal parameters, probably DRAS is a promising damage indicator

Keywords： damage assessment     decay ratio of acceleration signals (DRAS)     wavelet transform (WT)     modal analysis     reinforced concrete beam     beat phenomenon    

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Influence of site conditions on seismic design parameters for foundations as determined via nonlinearsite response analysis

Muhammad Tariq A. CHAUDHARY

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 275-303 doi: 10.1007/s11709-021-0685-0

Abstract: conditions, including geotechnical properties and the geological setting, influence the near-surface responseThe geotechnical parameters required for the design of foundations include mass density ( ), dampingEarthquake Hazards Reduction Program (NEHRP) site classes C and D, through 1D nonlinear seismic site responseHowever, the influence of on these parameters was less significant.Predictive relationships for , , and were derived based on the 1D seismic site response analysis

Keywords： site effects     1D seismic site response analysis     sensitivity analysis     foundations     shear wave velocity     soil    

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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 structuraldistribution to each SDOFs, from the measured structural responses plays an important role in structural identificationproposed methods has been carried out through analytical and numerical simulation of the lumped mass system

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

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Probability strength design of steam turbine blade and sensitivity analysis with respect to random parametersbased on response surface method

DUAN Wei

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 107-115 doi: 10.1007/s11708-008-0018-1

Abstract: Geometrical parameters, material parameters and load parameters of the blade are considered as inputrandom variables while the maximum deflection and maximum equivalent stress are output random variablesand the width of the scatter range of the random input variables, is applied to evaluate how much the outputparameters are influenced by the random input parameters.The results show that combination of the finite element method, the response surface method and Monte

Keywords： Probability sensitivity     sensitivity analysis     number     cross-section     statistical    

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Output tracking control of mobile manipulators based on dynamical sliding-mode control

WUYuxiang, FENG Ying, HU Yueming

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 110-115 doi: 10.1007/s11465-007-0019-5

Abstract: A dynamical sliding-mode controller is devised to track the output of mobile manipulators.Then, the system is decomposed into four lower-dimensional subsystems by means of diffeomorphism andMoreover, a design method of the dynamical sliding-mode controller that is applied to the output trackingThe simulation results indicate that the dynamical sliding-mode controller can not only track the giventrajectory correctly but also reduce the chattering of sliding-mode control system considerably.

Keywords： lower-dimensional     nonlinear     trajectory     tracking     diffeomorphism    

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Title Author Date Type Operation

Identification of system mode parameters using response measurement only

Huo Bingyong and Yi Weijian

Journal Article

Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Journal Article

Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Journal Article

Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Journal Article

Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

Journal Article

Uncovering the evolution of tin use in the United States and its implications

Journal Article

Optimization design of anti-seismic engineering measures for intake tower based on non-dominated sorting genetic algorithm-II

Journal Article

Numeric simulation for structure’s damage identification of space truss

JI Weihong, SONG Yupu, LIANG Bing

Journal Article

Mirror system based therapy for autism spectrum disorders

CHEN Wei, ZHANG Jing, DING Jun

Journal Article

New response surface model and its applications in aerodynamic optimization of axial compressor blade

LIU Xiaojia, NING Fangfei

Journal Article

Experimental study of structural damage identification based on modal parameters and decay ratio of acceleration

Zhigen WU, Guohua LIU, Zihua ZHANG

Journal Article

Influence of site conditions on seismic design parameters for foundations as determined via nonlinearsite response analysis

Muhammad Tariq A. CHAUDHARY

Journal Article

Approximation of structural damping and input excitation force

Mohammad SALAVATI

Journal Article

Probability strength design of steam turbine blade and sensitivity analysis with respect to random parametersbased on response surface method

DUAN Wei

Journal Article

Output tracking control of mobile manipulators based on dynamical sliding-mode control

WUYuxiang, FENG Ying, HU Yueming

Journal Article