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Numerical analysis and experimental investigation of modal properties for the gearbox in wind turbine

Pengxing YI,Peng HUANG,Tielin SHI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 388-402 doi: 10.1007/s11465-016-0404-z

Abstract: This paper examines the distinctive modal properties of WTGs through finite element (FE) and experimentalmodal analyses.First, a whole system model is developed to investigate the first 10 modal frequencies and mode shapesSecond, the FE modal results are validated through experimental modal analyses of a 1.5 WM WTG usingThe natural frequencies from the FE and experimental modal analyses show favorable agreement and reveal

Keywords： wind turbine gearbox     modal analysis     finite element analysis     modal frequency     bearing equivalence    

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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: model for aero-damping in a uniform incoming flow, the three-dimension analytical algorithm of the modalAccording to the analytical equations, the modal aero-damping ratio for different nature frequenciesthe factors to affect the aero-damping can be determined.The first bend and the first torsion’s modal

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

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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: In addition, a new method was compared with the linear modal-based damage assessment using wavelet transformPreliminary analysis was developed considering the beat phenomenon in the nonlinear state to explainWith 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    

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Experimental study of modal parameter identification in a simulated ambient-excited structure

JI Xiaodong, QIAN Jiaru, XU Longhe

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 281-285 doi: 10.1007/s11709-007-0036-9

Abstract: Structure modal parameter online identification was used to monitor the structural health as evidencednatural excitation technique and the eigensystem realization algorithm were combined to identify the modalThe mass-normalized mode shapes were obtained from the eigen-sensitivity analysis.The experimental modal analysis was performed on a two-story steel braced frame model excited by simulatedFrom finite element analysis results and the experimental data, it is shown that this method is effective

Keywords： eigensystem realization     eigen-sensitivity analysis     realization algorithm     vibration     effective    

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Experimental and computational validation of a scaled train tunnel model using modal analysis

Janice B. D’SOUZA, Sangarapillai KANAPATHIPILLAI

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 420-428 doi: 10.1007/s11465-013-0281-7

Abstract: The modal properties for the 300 Hz to 1500 Hz range, including resonances and mode shapes were identifiedcorrespond to theoretical results and a computational model created in COMSOL using Finite Element Analysis

Keywords： reverberation time     acoustic environment     modal properties     resonances    

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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) isdeveloped VMD technique is utilized to decompose the free decay response (FDR) of a structure into to modalA novel procedure is developed to calculate the instantaneous modal frequencies and instantaneous modalThe proposed identification method can straightforwardly extract the mode shape vectors using the modalparameter variation, and amplitude-dependent modal parameters, etc.

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

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Parameter studies on impact in a lap joint

Amir M. RAHMANI,Elizabeth K. ERVIN

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 64-77 doi: 10.1007/s11465-014-0322-x

Abstract: Modal analysis with base excitation is solved, and time histories of contact points are closely monitored

Keywords： impact mechanics     contact     joint behaviour     modal analysis     parameter study    

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network for damage detection in functionally graded carbon nanotube-reinforced composite plates using modal

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1453-1479 doi: 10.1007/s11709-021-0767-z

Abstract: The elemental modal kinetic energy (MKE) values, calculated from natural frequencies and translational

Keywords： deep feed-forward neural networks     functionally graded carbon nanotube-reinforced composite plates     modal    

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Modal disturbance investigation of rod-shaped ultrasonic motor using bending vibrations

ZHANG Jiantao, ZHU Hua, ZHAO Chunsheng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 343-347 doi: 10.1007/s11465-008-0058-6

Abstract: Modal disturbance of a rod-shaped ultrasonic motor using bending vibrations can cause problems such asIn this paper, a dynamic analysis model of a stator is created on the basis of the finite element methodThe modal frequency sensitivities of the stator to the structure parameters are investigated by modalanalysis.the experimental results of its amplitude frequency response characteristics show that the purpose of modal

Keywords： Hamilton principle     disturbance     separation     frequency separation     dynamic analysis    

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Performance-based seismic assessment of a historical masonry arch bridge: Effect of pulse-like excitations

Frontiers of Structural and Civil Engineering   Pages 855-869 doi: 10.1007/s11709-023-0972-z

Abstract: Seismic analysis of historical masonry bridges is important for authorities in all countries hosting

Keywords： masonry arch bridges     seismic behavior     modal properties     pulse-like records     nonlinear time historyanalysis    

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Control mode selection for modal control of long-span arch bridge

Zhengying LI, Zhengliang LI,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 401-406 doi: 10.1007/s11709-009-0052-z

Abstract: seismic control of arch bridge, a model reduction of long-span arch bridge was implemented based on modalanalysis.As for the critical mode selection, an approach based on the maximum modal displacement was presentedThe time domain and frequency domain analysis method were used to verify the simplified model of theThe numerical results show that the method of maximal modal displacement better analyze long-span arch

Keywords： selection     reduced-order     excitation     long-span     simplified    

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Mechanic analysis of a new 20 m bridge-inspection vehicle with the finite element method

Shen Yiping,,He Fuquan,Wang Songlai, Zhang Tian

Strategic Study of CAE 2010, Volume 12, Issue 9,   Pages 107-112

Abstract: modeled within Pro/e software with respect to four kinds of working conditions, and its static and modalfinite element analysis are performed by using the finite element code ANSYS.Based on these analysis results, the strength of the whole designed structure is checked, and all dangerousThe finite element analysis is an important theoretic method to verify the design, and the results provide

Keywords： bridge-inspection vehicle     finite element analysis     static     modal analysis     strength    

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Modal analysis of acoustic leak signal in pipelines using time-frequency analysis

JIAO Jing-pin, FEI Ren-yuan, HE Cun-fu, WU Bin

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 146-150 doi: 10.1007/s11465-006-0013-3

Abstract: It is important to analyze the propagation characteristics of guided waves in acoustic leak location in pipelines. In this paper, the acoustic leak signal is analyzed in the time-frequency domain. Based on the relation of time-frequency distribution of the acoustic leak signal and the dispersion curves of guided waves, the mode components of acoustic leak signals were obtained. The research can provide a guideline for the mode selection in pipeline leak location, and help improve the accuracy of leak location.

Keywords： dispersion     selection     guided     research     time-frequency    

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Finite element model updating of a large structure using multi-setup stochastic subspace identification method and bees optimization algorithm

Reza KHADEMI-ZAHEDI, Pouyan ALIMOURI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 965-980 doi: 10.1007/s11709-019-0530-x

Abstract: In the present contribution, operational modal analysis in conjunction with bees optimization algorithmsquared errors between the natural frequencies calculated by finite element method and operational modalanalysis, which is optimized using bees optimization algorithm.analysis.analysis.

Keywords： operational modal analysis     solar power plant structure     multi-setup stochastic subspace     bees optimizationalgorithm     sensitivity analysis    

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The Near β Forging Overthrows the Conventional Forging Theory and Develops a New Tri-modal Microstructure

Zhou Yigang,Zeng Weidong,Yu Hanqing

Strategic Study of CAE 2001, Volume 3, Issue 5,   Pages 61-66

Abstract: of microstructure in addition to the existing four titanium alloy microstructures (i.e. equiaxed, bi-modal

Keywords： titanium alloy     near beta forging     tri-modal microstructure    

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Title Author Date Type Operation

Numerical analysis and experimental investigation of modal properties for the gearbox in wind turbine

Pengxing YI,Peng HUANG,Tielin SHI

Journal Article

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

Jun XING, Lin LI,

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

Experimental study of modal parameter identification in a simulated ambient-excited structure

JI Xiaodong, QIAN Jiaru, XU Longhe

Journal Article

Experimental and computational validation of a scaled train tunnel model using modal analysis

Janice B. D’SOUZA, Sangarapillai KANAPATHIPILLAI

Journal Article

Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Journal Article

Parameter studies on impact in a lap joint

Amir M. RAHMANI,Elizabeth K. ERVIN

Journal Article

network for damage detection in functionally graded carbon nanotube-reinforced composite plates using modal

Journal Article

Modal disturbance investigation of rod-shaped ultrasonic motor using bending vibrations

ZHANG Jiantao, ZHU Hua, ZHAO Chunsheng

Journal Article

Performance-based seismic assessment of a historical masonry arch bridge: Effect of pulse-like excitations

Journal Article

Control mode selection for modal control of long-span arch bridge

Zhengying LI, Zhengliang LI,

Journal Article

Mechanic analysis of a new 20 m bridge-inspection vehicle with the finite element method

Shen Yiping,,He Fuquan,Wang Songlai, Zhang Tian

Journal Article

Modal analysis of acoustic leak signal in pipelines using time-frequency analysis

JIAO Jing-pin, FEI Ren-yuan, HE Cun-fu, WU Bin

Journal Article

Finite element model updating of a large structure using multi-setup stochastic subspace identification method and bees optimization algorithm

Reza KHADEMI-ZAHEDI, Pouyan ALIMOURI

Journal Article

The Near β Forging Overthrows the Conventional Forging Theory and Develops a New Tri-modal Microstructure

Zhou Yigang,Zeng Weidong,Yu Hanqing

Journal Article