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Time-domain and frequency-domain approaches to identification of bridge flutter derivatives

Zhengqing CHEN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 173-179 doi: 10.1007/s11709-009-0034-1

Abstract: are essential for flutter analysis of long-span bridges, and they are generally identified from the vibrationMaking use of the forced vibration testing data of three sectional models, namely, a thin-plate modelidentification results of flutter derivatives relatively sensitive to the signal phase lag between vibration

Keywords： long-span bridges     wind-induced vibration     flutter derivatives     forced vibration test     time-domain method    

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Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Frontiers of Structural and Civil Engineering   Pages 981-993 doi: 10.1007/s11709-023-0979-5

Abstract: load on the modal coordinates of a linear elastic simple Euler–Bernoulli beam, and investigated the forcedThe forced modal responses consist of multiple frequency-multiplication steady-state harmonics and oneThe analysis revealed that a moving load induces high-harmonic forced resonance amplification when theTo verify the occurrence of high-harmonic forced resonance, numerical tests were conducted on single-spanThe forced resonance amplification characteristics of the fundamental mode for beam response estimation

Keywords： forced vibration     linear Euler beam     moving load     harmonic structure     frequency modulation     end restraints    

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The study of forced vibration for threetower suspension bridge under moving loads

Feng Zhaoxiang,Chen Liang and Miu Changqing

Strategic Study of CAE 2012, Volume 14, Issue 5,   Pages 80-84

Abstract:

Taking Taizhou Bridge for example, dynamic characteristics of the finite element model are analyzed and then the effects of different moving speeds and loads on dynamic response of three-tower twospan suspension bridge are studied. The result demonstrates that vertical bending of natural frequency is approximately 0.08 Hz, which is far below natural frequency loading truck, and will not form resonance condition. The response of force and displacement of three-tower twospan continuous suspension bridge under simply moving loads and equivalent static loads are the same. The structural will be greater when moving loads quantity and speed become greater and they have similar positive relationship. However, the load amplification factor of structural force and displacement does not vary with the quantity change of moving loads.

Keywords： dynamic characteristics     forced vibration     response     load amplification factor    

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Similitude design for the vibration problems of plates and shells: A review

Yunpeng ZHU, You WANG, Zhong LUO, Qingkai HAN, Deyou WANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 253-264 doi: 10.1007/s11465-017-0418-1

Abstract:

Similitude design plays a vital role in the analysis of vibration and shock problems encountered inengineering practice and summarizes the major achievements of the dynamic similitude theory in structural vibrationdiscusses the existing problems and the potential of the dynamic similitude theory for the analysis of vibration

Keywords： review     dynamic     similitude     vibration     model test    

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Effects of Engineering Factors on Structure Response in Vibration Test

Chen Youling,Zhu Xuewang,Zhu Changchun

Strategic Study of CAE 2006, Volume 8, Issue 12,   Pages 62-65

Abstract:

Effects of engineering factors such as fixture boundaries, assembly connections, dynamic vibrationloads position and level, etc., on response of complicated structure in vibration test are investigatedIt is shown that evaluations on the response of structure in service are applicable using vibration test

Keywords： complicated structure     vibration test     structure response     engineering factor    

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Ambient vibration testing and updating of the finite element model of a simply supported beam bridge

Ivan Gomez ARAUJO, Esperanza MALDONADO, Gustavo Chio CHO

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 344-354 doi: 10.1007/s11709-011-0124-8

Abstract: An ambient vibration test on a concrete bridge constructed in 1971 and calibration of its finite elementthe bridge, i.e. natural frequencies, mode shapes and damping ratios were computed from the ambient vibrationFrom the results of the ambient vibration test of this type of bridge, it is concluded that two-dimensional

Keywords： modal analysis     parameter identification     ambient vibration test     Eigensystem Realization Algorithm (ERA    

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Dynamic test and finite element model updating of bridge structures based on ambient vibration

HUANG Minshui, ZHU Hongping, LI Lin, GUO Wenzeng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 139-144 doi: 10.1007/s11709-008-0028-4

Abstract: drawings, the dynamic characteristics of the bridge are studied using finite element analysis and ambient vibration

Keywords： numerical     effective     Highway     vibration     complex external    

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data enhancement for implementation in purification of modal frequency for extremely noisy ambient vibration

Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI, Soheil MOHAMMADI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 446-472 doi: 10.1007/s11709-019-0605-8

Abstract: Hence, different thresholds can be obtained for different recorded signals in one ambient test.

Keywords： ambient vibration test     high level noise     iterative signal enhancement     wavelet     cross and autocorrelation    

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Study on forced air convection cooling for electronic assemblies

LI Bin, TAO Wenquan, HE Yaling

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 158-163 doi: 10.1007/s11708-008-0009-2

Abstract: The slotted fin concept was employed to improve the air cooling performance of plate-fin in heat sinks. Numerical simulations of laminar heat transfer and flow pressure drop were conducted for the integral plate fin, discrete plate fin and discrete slotted fin heat sinks. It is found that the performance of the discrete plate fin is better than that of the integral continuum plate fin and the performance of slotted fin is better than that of the discrete plate fin at the same pumping power of the fan. A new type of heat sink characterized by discrete and slotted fin surfaces with thinner fins and smaller spaces between fins is then proposed. Preliminary computation shows that this type of heat sink may be useful for the next generation of higher thermal load CPUs. The limit of cooling capacity for air-cooling techniques was also addressed.

Keywords： concept     slotted     air-cooling     Preliminary computation     generation    

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Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 57-61 doi: 10.1007/s11465-007-0009-7

Abstract: pore fluid flow and thermal conduction in the direction of the fluid flow, the thermally developing forced

Keywords： semi-infinite saturated     direction     interaction     skeleton     thermal equilibrium    

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Soybean drying characteristics in microwave rotary dryer with forced convection

Ruifang WANG, Zhanyong LI, Yanhua LI, Jingsheng YE

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 289-292 doi: 10.1007/s11705-009-0022-y

Abstract: A new hybrid drying technique by combining microwave and forced convection drying within a rotary drum

Keywords： cracking     microwave     rotary drying     soybean    

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An invariant descriptor for conjugate forced convection-conduction cooling of 3D protruding heaters in

Thiago ANTONINI ALVES,Paulo H. D. SANTOS,Murilo A. BARBUR

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 263-276 doi: 10.1007/s11465-015-0345-y

Abstract: defined in this study as the conjugate influence coefficients (g+) caused by the forced

Keywords： channel flow     conjugate forced convection-conduction cooling     conjugate influence coefficients     discrete    

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Simulation of Effect of Forced Ventilated and Smoke Controlled System in Subway Fire Disaster

Cai Bo,Li Huiliang,Liao Guangxuan

Strategic Study of CAE 2005, Volume 7, Issue 8,   Pages 80-83

Abstract: Based on FDS, the distribution of temperature and smoke with or without forced ventilated and smoke controlled

Keywords： subway fire disaster     FDS simulation     forced ventilated smoke controlled system    

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Vibration characteristics and machining performance of a novel perforated ultrasonic vibration platform

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0730-2

Abstract: Ultrasonic vibration-assisted grinding (UVAG) is an advanced hybrid process for the precision machiningIts performance considerably influences the vibration amplitude and resonant frequency.In this work, a novel perforated ultrasonic vibration platform resonator was developed for UVAG.vibration characteristics.The performance of the vibration platform was evaluated by the vibration tests and UVAG experiments of

Keywords： ultrasonic vibration-assisted grinding     perforated ultrasonic vibration platform     vibration characteristics    

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Recent development of vibration utilization engineering

WEN Bangchun

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 1-9 doi: 10.1007/s11465-008-0017-2

Abstract: The utilization of vibration and wave, which was developed during the latter half of the 20th centuryThus, due to its necessity in industry and daily life, extensive research has been devoted to vibrationIn this paper, vibration utilization is classified into linear or non-linear vibrations, waves, and electric-magneticSome research results about vibration utilization engineering are described.

Keywords： utilization engineering     non-linear     vibration     vibration utillization     utillization engineering    

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Title Author Date Type Operation

Time-domain and frequency-domain approaches to identification of bridge flutter derivatives

Zhengqing CHEN

Journal Article

Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Journal Article

The study of forced vibration for threetower suspension bridge under moving loads

Feng Zhaoxiang,Chen Liang and Miu Changqing

Journal Article

Similitude design for the vibration problems of plates and shells: A review

Yunpeng ZHU, You WANG, Zhong LUO, Qingkai HAN, Deyou WANG

Journal Article

Effects of Engineering Factors on Structure Response in Vibration Test

Chen Youling,Zhu Xuewang,Zhu Changchun

Journal Article

Ambient vibration testing and updating of the finite element model of a simply supported beam bridge

Ivan Gomez ARAUJO, Esperanza MALDONADO, Gustavo Chio CHO

Journal Article

Dynamic test and finite element model updating of bridge structures based on ambient vibration

HUANG Minshui, ZHU Hongping, LI Lin, GUO Wenzeng

Journal Article

data enhancement for implementation in purification of modal frequency for extremely noisy ambient vibration

Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI, Soheil MOHAMMADI

Journal Article

Study on forced air convection cooling for electronic assemblies

LI Bin, TAO Wenquan, HE Yaling

Journal Article

Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

Journal Article

Soybean drying characteristics in microwave rotary dryer with forced convection

Ruifang WANG, Zhanyong LI, Yanhua LI, Jingsheng YE

Journal Article

An invariant descriptor for conjugate forced convection-conduction cooling of 3D protruding heaters in

Thiago ANTONINI ALVES,Paulo H. D. SANTOS,Murilo A. BARBUR

Journal Article

Simulation of Effect of Forced Ventilated and Smoke Controlled System in Subway Fire Disaster

Cai Bo,Li Huiliang,Liao Guangxuan

Journal Article

Vibration characteristics and machining performance of a novel perforated ultrasonic vibration platform

Journal Article

Recent development of vibration utilization engineering

WEN Bangchun

Journal Article