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Nonlinear dynamics and analysis of a four-bar linkage with clearance

Yuanguang TANG, Zongyu CHANG, Xiaogang DONG, Yafei HU, Zhenjiang YU

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2, Pages 160-168 doi: 10.1007/s11465-013-0258-6

Abstract: Bifurcation diagram is used to suggest that bifurcation and fractal phenomena exist in the dynamic response

Keywords： four-bar linkage chaos bifurcation strange attractors dynamics

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Aircraft safety analysis based on differential manifold theory and bifurcation method None

Chi ZHOU, Ying-hui LI, Wu-ji ZHENG, Peng-wei WU

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 2, Pages 292-299 doi: 10.1631/FITEE.1700435

Abstract: In this study, the stall point and bifurcation point are confirmed using the bifurcation analysis, and

Keywords： Loss of control Safety envelope Aircraft dynamic Bifurcation analysis Differential manifold theory

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Dynamics analysis of a cracked dual-disk over-hung rotor-bearing system

CHEN Hong, LI He, WEN Bang-chun, ZHANG Xiao-wei

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2, Pages 204-208 doi: 10.1007/s11465-006-0002-6

Abstract: Its bifurcation and chaos characteristics are analyzed with crack fault and without crack fault.By analyzing the bifurcation plot, Poincare section plots and amplitude spectra, we found that the crack

Keywords： nonlinear oil-film diagnosis bifurcation dynamic numerical Runge-Kutta

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Research on Bifurcation Property of Dike Rockfill of River Closure by End Dumping

He Changhai,Xiao Huanxiong,Hu Zhigen,Zhou Yihong

Strategic Study of CAE 2001, Volume 3, Issue 6, Pages 69-74

Abstract: Secondly, a micro model which describes the structure of the rockfill is adopted, and the research on the bifurcationequation, the type of its universal unfolding and its transition set is made by application of static bifurcationThe study result shows that different bifurcation phenomena of the static balance equation will happen

Keywords： river closure by end dumping slump static bifurcation singularity theory

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Bifurcation-based fractional-order PI None

Karima RABAH, Samir LADACI, Mohamed LASHAB

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 2, Pages 180-191 doi: 10.1631/FITEE.1601543

Abstract: The stability analysis of the nonlinear chaotic system is made based on the proportional-integral-derivativeactions using the bifurcation diagram.

Keywords： Fractional order system Bifurcation diagram Fractional PIλDμ controller Multi-scroll Chen chaotic system

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The nonlinear singularity phenomenon of low frequency oscillation in power system

Ma Jinglan,Wang Wei,Wan Jingsheng,Zhang Yongli

Strategic Study of CAE 2009, Volume 11, Issue 8, Pages 93-96

Abstract: In this paper, the inherent reason that causes LFO is discussed.With Hopf bifurcation theory, it is analyzedThe study indicates that because of the Hopf bifurcation, singularity phenomenon in the power system

Keywords： LFO bifurcation theory nonlinear singularity

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Stability and coupling dynamic behavior of nonlinear journal active electromagnetic bearing rotor system

LU Yanjun, HEI Di, WANG Yuan, DAI Rong, LU Yanjun, LIU Heng, YU Lie

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2, Pages 193-199 doi: 10.1007/s11465-008-0023-4

Abstract: and the Netwon-Raphson method is presented to calculate the critical speed at the corresponding Hopf bifurcationWith the change of control parameters, the system local stability and bifurcation behaviors are obtained

Keywords： proportional integral bifurcation corresponding integral differential predictor-corrector mechanism

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A new photosensitive neuron model and its dynamics Research Articles

Yong Liu, Wan-jiang Xu, Jun Ma, Faris Alzahrani, Aatef Hobiny,hyperchaos@163.com,hyperchaos@lut.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 9, Pages 1387-1396 doi: 10.1631/FITEE.1900606

Abstract: We also present detailed analysis for estimating the mode transition and firing pattern selection of

Keywords： Photosensitive neuron Neuron model Bifurcation Bursting Photocell

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Chaotic dynamics of a fractional order glucose-insulin regulatory system Research Articles

Karthikeyan Rajagopal, Atiyeh Bayani, Sajad Jafari, Anitha Karthikeyan, Iqtadar Hussain,rkarthiekeyan@gmail.com,atiyeh.bayani@yahoo.com,sajad.jafari@tdtu.edu.vn,mrs.anithakarthikeyan@gmail.com,iqtadarqau@gmail.com

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 7, Pages 1108-1118 doi: 10.1631/FITEE.1900104

Abstract: It has been extensively proved in the literature that fractional order analysis of complex systems canTo show the effectiveness of fractional order analysis, all numerical investigations like stability of

Keywords： Diabetes mellitus Chaos Bifurcation Multistability Antimonotonicity

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Decomposition analysis applied to energy and emissions: A literature review

Frontiers of Engineering Management Pages 625-639 doi: 10.1007/s42524-023-0270-4

Abstract: Decomposition analysis has been widely used to assess the determinants of energy and CO₂ emissionsBoth the methodology and application of decomposition analysis have been largely improved in the pastTo this end, this study presents a literature survey for decomposition analysis applied to energy andtechniques is first conducted, followed by a synthesis of emerging trends and features for the decomposition analysisThe findings are expected to direct future research in decomposition analysis.

Keywords： index decomposition analysis structural decomposition analysis production decomposition analysis energy

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Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

Frontiers in Energy 2016, Volume 10, Issue 4, Pages 424-440 doi: 10.1007/s11708-016-0423-9

Abstract: A three-dimensional finite element analysis (FEA) based CFD technique for finding the spread of pressureThe results of CFD are mainly obtained to fine tune the thermal analysis.Thus, in this focus, a flow analysis assisted thermal analysis is presented to predict the steady stateThe vibration analysis is illustrated.Harmonic analysis such as sine sweep analysis to identify the range of speeds causing high vibrations

Keywords： flux reversal generator air velocity computation fluid dynamics thermal analysis vibration analysis finiteelement analysis

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Review of sentiment analysis: An emotional product development view

Frontiers of Engineering Management Pages 592-609 doi: 10.1007/s42524-022-0227-z

Abstract: Given that sentiment analysis (SA) can extract and analyze people’s opinions, sentiments, attitudes,

Keywords： sentiment analysis emotion product development Kansei Engineering

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Jack up reliability analysis: An overview

Ahmad IDRIS, Indra Sati Hamonangan HARAHAP, Montasir Osman Ahmed ALI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4, Pages 504-514 doi: 10.1007/s11709-017-0443-5

Abstract: Reliability analysis theories are one of the frameworks recommended for the safety assessment of theWith recent developments in uncertainty and reliability analysis of structures subject to stochasticexcitation, this study aims at providing a review on the past developments in jack up reliability analysisThe results from literature reviewed shows that failure probabilities vary significantly with analysisIn addition, from the variants of reliability analysis approach, the method of time dependent reliability

Keywords： jack up reliability analysis uncertainty analysis review of jack up

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Systems biomedical analysis of Schistosoma japonicum

Ze-Guang HAN MD,

Frontiers of Medicine 2010, Volume 4, Issue 2, Pages 157-165 doi: 10.1007/s11684-010-0034-5

Abstract: Human schistosomiasis, caused mainly by three principal species including , , and , remains a major public health concern worldwide. is prevalent in southern China, being a major disease risk for 66 million people. The blood fluke has a complex life cycle for survival: as a free-living form in fresh water and as a parasite in the snail intermediate and vertebrate definitive hosts. Systems-based biomedical analyses, including genomic, transcriptomic, proteomic and metabonomic approaches, have been performed on the schistosome. These comprehensive investigations have not only characterized the genomic features but also chartered gene and protein expression profiles across genders and developmental stages. The integration of the huge information will lay a global and solid foundation for the molecular architecture of the biology, pathogenesis, and host-parasite interactions of the human blood fluke, which will facilitate the development of a new antischistosomal vaccine and drugs as well as diagnostic markers for the treatment and control of schistosomiasis.

Keywords： Schistosoma japonicum systems biomedical analysis

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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:

Wind turbine gearbox (WTG), which functions as an accelerator, ensures the performance and service life of wind turbine systems. This paper examines the distinctive modal properties of WTGs through finite element (FE) and experimental modal analyses. The study is performed in two parts. First, a whole system model is developed to investigate the first 10 modal frequencies and mode shapes of WTG using flexible multi-body modeling techniques. Given the complex structure and operating conditions of WTG, this study applies spring elements to the model and quantifies how the bearings and gear pair interactions affect the dynamic characteristics of WTGs. Second, the FE modal results are validated through experimental modal analyses of a 1.5 WM WTG using the frequency response function method of single point excitation and multi-point response. The natural frequencies from the FE and experimental modal analyses show favorable agreement and reveal that the characteristic frequency of the studied gearbox avoids its eigen-frequency very well.

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