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Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 289-299 doi: 10.1007/s11465-009-0064-3

Abstract: The dynamic stiffness matrix of the bearing joint region can be identified by measuring the matrix of frequencyresponse function (FRFs) of the substructure (axle) and whole structure (assembly of the axle, bearingConsidering difficulty in measuring angular displacement, applying moment, and directly measuring relevant FRFsWith experiments and simulation analysis, FRFs related with translational degree of freedom, which is

Keywords： frequency response function (FRFs)     dynamic stiffness     finite element     synthetic substructure method     joint    

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

Ye GAO, Wei SUN

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

Abstract: identifying such parameters was described based on the measured natural frequencies and amplitudes of the frequencyresponse functions (FRFs) of a pipeline system supported by two hoops.the reliability of the identification results was validated by comparing the predicted and measured FRFsResults indicated that the support stiffness and damping of the hoop exhibited frequency-dependent characteristics

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

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Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 506-510 doi: 10.1007/s11708-013-0275-5

Abstract: The collision frequency function for aerosol particles has already been calculated for the free moleculeforce, electric force and molecular forces, created by particles themselves, recalculated the collision frequencyAttractive forces increase naturally the collision frequency, while repulsive forces decrease it.

Keywords： aerosol particles     collision frequency function     coagulation    

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Effects of elastic support on the dynamic behaviors of the wind turbine drive train

Shuaishuai WANG, Caichao ZHU, Chaosheng SONG, Huali HAN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 348-356 doi: 10.1007/s11465-017-0420-7

Abstract: Frequency response functions were used to examine how different elastic support parameters influenceA large support stiffness of the torque arms decreased the dynamic response of the planet carrier andthe main bearing, whereas a large support stiffness of the main bearing decreased the dynamic response

Keywords： wind turbine drive train     elastic support     dynamic behavior     frequency response function    

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Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 593-606 doi: 10.1007/s11465-021-0636-4

Abstract: method for the continuum topology optimization of transient vibration problem with maximum dynamic responseAn aggregated index in the form of an integral function is presented to cope with the maximum responseThrough comparison with the corresponding static response from the final designs, the optimized results

Keywords： topology optimization     solid isotropic material with penalization     transient response     aggregation function    

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Research of Refinement Methods of Dynamic Model Based on Frequency Response Functions

Zhu Dangdang,Feng Yaoqi,Xiang Shuhong

Strategic Study of CAE 2005, Volume 7, Issue 8,   Pages 89-94

Abstract: the development of dynamic model improvement methods, and researched the refinement methods based on frequencyand response functions, which had been developed in recent years.In order to make the full use of the frequency and response functions obtained in the vibration test,the paper introduced three dynamic model improvement methods with frequency and response functions such

Keywords： spacecraft     dynamics     frequency and response functions     model refinement    

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Comparison in executive function in Chinese preterm and full-term infants at eight months

Yao Feng, Hong Zhou, Yan Zhang, Anthony Perkins, Yan Wang, Jing Sun

Frontiers of Medicine 2018, Volume 12, Issue 2,   Pages 164-173 doi: 10.1007/s11684-017-0540-9

Abstract:

Executive function (EF) is increasingly recognized as being responsible for adverse developmental

Keywords： executive function (EF)     preterm infant     working memory     inhibition to prepotent response     inhibition to    

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Microbial responses to the use of NaClO in sediment treatment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1451-1

Abstract:

• Chlorine addition enhanced the release of TOC, TN from the sediment.

Keywords： Sediment chlorination     Substance mobility     Microbial response     Community composition     Function    

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An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural

P. ZAKIAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 470-479 doi: 10.1007/s11709-017-0440-8

Abstract: this study, the stochastic dynamic analysis of soil mass is performed by finite element method in the frequency

Keywords： stochastic analysis     random seismic excitation     finite element method     artificial neural network     frequency    

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Demand response based congestion management in a mix of pool and bilateral electricity market model

Ashwani KUMAR, Charan SEKHAR

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 164-178 doi: 10.1007/s11708-012-0187-9

Abstract: The nodal prices increases during the congestion hours and the demand response to nodal prices will beIn this paper, demand response-based CM has been proposed for a mix of pool and bilateral electricityMulti-line congestion cases have been considered to study the impact on demand response without and with

Keywords： bid function     congestion management (CM)     demand response     pool+bilateral electricity market     static var    

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Research of mid and high frequency response of complex mechanical structures using energy finite element

Zhu Danhui,Xie Miaoxia,Kong Xiangjie,Zhang Wenbo,Chen Hualing

Strategic Study of CAE 2013, Volume 15, Issue 1,   Pages 106-112

Abstract: reviewed, which indicate that the development direction of this method tend to predict the dynamic responsenbsp;the achievements of our research group are presented, which focus on predict the dynamical responseThere are three main aspects are referred: the first section is that the EFEM to predict the responsecylindrical shell and truncated conical shell, and this method help us to obtain the local detail responseof complex structures in mid and high frequency range; the second part is that we extend the EFEM

Keywords： mid and high frequency response     energy finite element method     prediction of vibro-acoustical response    

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Calculation and research on deepwater drilling riser flexural equation and natural frequency

Jiang Wei

Strategic Study of CAE 2011, Volume 13, Issue 5,   Pages 66-73

Abstract: Therefore, simple calculation method for natural frequency of drilling riser was achieved.

Keywords： deepwater drilling     drilling riser     flexural equation     natural frequency     shape function    

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Load shedding scheme for an interconnected hydro-thermal hybrid system with SMES

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 227-236 doi: 10.1007/s11708-012-0198-6

Abstract: The frequency of the power system varies based on the load pattern of the consumers.With continuous increase in the load, the frequency of the system keeps decreasing and may reach itsFurther increase in the load will result in more frequency drop leading to the need of load shedding,in a hybrid thermal-hydro system for finding the required amount of load to be shed for setting the frequencyThe load shedding steps were obtained based on the rate of change of frequency with the increase in the

Keywords： critical load     frequency response     load shedding     multi-area system     rate of change of frequency     superconducting    

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Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 90-102 doi: 10.1007/s11708-012-0224-8

Abstract: to many emergency conditions which may lead to emergency state of operation with decay in the system frequencyThe dramatic change in the frequency can result in cascaded failure of the system.two-area thermal-thermal system for finding the required amount of load to be shed for setting the frequencyThe LS steps have been obtained based on the rate of change of frequency with the increase in load in

Keywords： critical load     frequency response     load shedding (LS)     multi-area system     rate of change of frequency     linear    

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Soil seismic analysis for 2D oblique incident waves using exact free-field responses by frequency-based

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1530-1551 doi: 10.1007/s11709-022-0900-7

Abstract: First, the frequency-domain exact solutions for the displacements and stresses of the free field areBased on the asymmetric finite/infinite element model, the frequency-domain motion equations for seismicThe results obtained in frequency and time domain are verified against those of Wolf’s, Luco and de Barros

Keywords： oblique incident waves     critical angle     half-space     finite/infinite element approach     seismic response    

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Title Author Date Type Operation

Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Journal Article

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

Ye GAO, Wei SUN

Journal Article

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Journal Article

Effects of elastic support on the dynamic behaviors of the wind turbine drive train

Shuaishuai WANG, Caichao ZHU, Chaosheng SONG, Huali HAN

Journal Article

Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Journal Article

Research of Refinement Methods of Dynamic Model Based on Frequency Response Functions

Zhu Dangdang,Feng Yaoqi,Xiang Shuhong

Journal Article

Comparison in executive function in Chinese preterm and full-term infants at eight months

Yao Feng, Hong Zhou, Yan Zhang, Anthony Perkins, Yan Wang, Jing Sun

Journal Article

Microbial responses to the use of NaClO in sediment treatment

Journal Article

An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural

P. ZAKIAN

Journal Article

Demand response based congestion management in a mix of pool and bilateral electricity market model

Ashwani KUMAR, Charan SEKHAR

Journal Article

Research of mid and high frequency response of complex mechanical structures using energy finite element

Zhu Danhui,Xie Miaoxia,Kong Xiangjie,Zhang Wenbo,Chen Hualing

Journal Article

Calculation and research on deepwater drilling riser flexural equation and natural frequency

Jiang Wei

Journal Article

Load shedding scheme for an interconnected hydro-thermal hybrid system with SMES

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Journal Article

Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Journal Article

Soil seismic analysis for 2D oblique incident waves using exact free-field responses by frequency-based

Journal Article