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Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0731-1

Abstract: Blade strain distribution and its change with time are crucial for reliability analysis and residualTraditional strain measurements are achieved by strain gauges (SGs) in a contact manner at discrete positionsThis study proposes a method of full-field and real-time strain reconstruction of an aero-engine bladeThe full-field strain distribution is in-time visualized.This paper provides a low-cost, real-time, and visualized measurement of blade full-field dynamic strain

Keywords： aero-engine blade     displacement response     dynamic strain reconstruction     mode shape     strain gauge    

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A dynamic stiffness-based framework for harmonic input estimation and response reconstruction considering

Yixian LI; Limin SUN; Wang ZHU; Wei ZHANG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 448-460 doi: 10.1007/s11709-022-0805-5

Abstract: This paper proposes a framework based on the dynamic stiffness theory, to estimate harmonic input, reconstructTo begin, Fourier transform converts the dynamic equilibrium equation to an equivalent static one in

Keywords： dynamic stiffness     principal component analysis     response reconstruction     damage localization     under-determined    

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Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Frontiers of Structural and Civil Engineering   Pages 915-934 doi: 10.1007/s11709-023-0907-8

Abstract: pile (FSP) model is developed to simulate the behavior of pipe piles with soil plugs undergoing high-straindynamic impact loading.A parametric analysis is conducted to illustrate the influence of the model parameters on the pile dynamic

Keywords： fictitious soil pile     soil plug     pipe piles     high-strain dynamic analysis     one-dimensional wave theory    

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Separation and extraction of bridge dynamic strain data

Baijian WU, Zhaoxia LI, Ying WANG, T. H. T. CHAN,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 395-400 doi: 10.1007/s11709-009-0049-7

Abstract: Through comparing the measured data of dynamic strains due to loading and temperature by the stain gaugeand temperature sensor at the same location, the information in the strain data was divided into threeAs an application of the proposed method, the effect of strain deformation and noises on the fatigueThe strain due to temperature varying attributes a little to the errors of fatigue assessment; however/stress amplitude picked up by real structural stress or strain.

Keywords： dynamic     valuable     separatrix     strain/stress amplitude     frequency    

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Experimental investigation on dynamic response ofchamber to simulate deepwater explosive

Zhong Dongwang,Li Linna

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 78-81

Abstract:

Experimental investigation was conducted for the dynamic response ofthat can simulate 200m deepwater explosive loaded 10gTNT equivalent．The vibration characteristics and dynamicstrength of the chamber was analyzed by measuring the strain profiles of six typical points on the chamber．The research results reveal the rule of the dynamic response of the container on different explosive

Keywords： deepwater explosive     explosive chamber     dynamic response     strain    

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Energy-aware scheduling with reconstruction and frequency equalization on heterogeneous systems

Yong-xing LIU,Ken-li LI,Zhuo TANG,Ke-qin LI

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 7,   Pages 519-531 doi: 10.1631/FITEE.1400399

Abstract: With the increasing energy consumption of computing systems and the growing advocacy for green computing, energy efficiency has become one of the critical challenges in high-performance heterogeneous computing systems. Energy consumption can be reduced by not only hardware design but also software design. In this paper, we propose an energy-aware scheduling algorithm with equalized frequency, called EASEF, for parallel applications on heterogeneous computing systems. The EASEF approach aims to minimize the finish time and overall energy consumption. First, EASEF extracts the set of paths from an application. Then, it reconstructs the application based on the extracted set of paths to achieve a reasonable schedule. Finally, it adopts a progressive way to equalize the frequency of tasks to reduce the total energy consumption of systems. Randomly generated applications and two real-world applications are examined in our experiments. Experimental results show that the EASEF algorithm outperforms two existing algorithms in terms of makespan and energy consumption.

Keywords： Directed acyclic graph     Dynamic voltage scaling     Energy aware     Heterogeneous systems     Task scheduling    

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Dynamic characteristics of an NC table with phase space reconstruction

Linhong WANG, Bo WU, Runsheng DU, Shuzi YANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 179-183 doi: 10.1007/s11465-009-0018-9

Abstract: Phase space reconstruction is an effective approach for researching dynamic behaviors of a system withBased on the theory and method for phase space reconstruction, the correlation dimension, maximum Lyapunovexponent, and dynamic time series measured from the NC table were analyzed.Therefore, an NC table is a nonlinear dynamic system.This research establishes a basis for dynamic system discrimination of a CNC machine.

Keywords： NC table     chaotic characteristic     phase-space reconstruction     correlation dimension     maximum Lyapunov exponent    

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Isogeometric analysis based on geometric reconstruction models

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 782-797 doi: 10.1007/s11465-021-0648-0

Abstract: represented by boundary polygons or point cloud and is embedded into a regular background grid, and a model reconstruction

Keywords： isogeometric analysis     reconstruction model     level set function     trimmed element     point cloud    

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Dynamic failure analysis on granite under uniaxial impact compressive load

ZHAI Yue, MA Guowei, HU Changming, ZHAO Junhai

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 253-260 doi: 10.1007/s11709-008-0042-6

Abstract: High strain-rate uniaxial compressive loading tests were produced in the modified split Hopkinson pressurefailure mode by sudden splitting parallel to the direction of uniaxial compressive loading at different strainTo quantitatively analyze the failure phenomena, the numerical calculation based on a dynamic interactingcrack space and friction coefficient on the macro-mechanical properties of granite under different strainAccordingly, the strain-dependency of the compression strength and the fragmentation degree of granite

Keywords： numerical calculation     coefficient     cylinder     splitting parallel     strain-dependency    

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Fractal characteristic evaluation and interpolation reconstruction for surface topography of drilled

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 840-854 doi: 10.1007/s11465-021-0643-5

Abstract: Compared with the model in published literature, the proposed model has equal reconstruction effect in

Keywords： surface topography     fractal evaluation     fractal interpolation     reconstruction     composite    

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Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 210-216 doi: 10.1007/s11709-012-0165-7

Abstract: If stresses or forces are needed, these are easily determined by the value of the strain and the relevant

Keywords： steel     stress-strain characteristics     tension test     strain design     actual behavior     improved design codes    

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Shape reconstruction of parallelogram flaw

ZHENG Gangfeng, WU Bin, HE Cunfu

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 17-22 doi: 10.1007/s11465-008-0015-4

Abstract: To reconstruct the shape of the scatterer in elastic media, the authors deduce the Born approximation solution of the two-dimensional scattering problem, which includes the shape factor that embodies all information about the shape of the scatterer. Accordingly, the change in the shape of the scatterer only necessitates the number of the corresponding new shape factors. For a parallelogram void in a long Al rod, its shape factor can be obtained. In view of the definition of a characteristic function, the shape factor has a corresponding integral representation. Obviously, the shape factor can be considered as a Fourier transform of the characteristic function, which is reconstructed from the inverse Fourier transform. The integral equation is considered as the basic equation to reconstruct the shape of the scatterer. The identification of the geometrical character of a flaw is then given by the two dimensional inverse Born approximation in a low-frequency range. For the parallelogram void, a theoretical calculating identification is performed. At the same time, the numerical results are obtained by the finite element method.

Keywords： approximation     scatterer     scattering problem     information     inverse    

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The ecological system and the regionalization of landscape reconstruction in northwest of China

Peicheng LI,Guoyuan DU,Qilei LI,Jinfeng WANG,Feimin ZHENG

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 4,   Pages 291-298 doi: 10.15302/J-FASE-2014033

Abstract: Thus, the Chinese government is strengthening research on improvement and reconstruction of the ecologicalIt is suggested that the reconstruction of landscape should be conducted by step by step regionalizationThe first level regionalization results of reconstruction of landscape are discussed.

Keywords： reconstruction of landscape     ecological system     the northwest area of China     science and technology action    

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Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 653-666 doi: 10.1007/s11709-018-0503-5

Abstract: Recent research about reconstruction methods mainly used the interpolation reconstruction of the fluctuatingpressure at the edge of the building, the work presented in this paper focuses on the extrapolation reconstructionThe studies show that it works well for not only interpolation reconstruction but also extrapolationreconstruction.different variogram, preliminary results suggest less time consumption and high efficiency in extrapolation reconstruction

Keywords： extrapolation reconstruction     proper orthogonal decomposition     Kriging method     von Kármán function     Hurst    

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Dynamic modeling and coupling characteristics of rotating inclined beams with twisted-shape sections

Jin ZENG, Chenguang ZHAO, Hui MA, Bangchun WEN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 374-389 doi: 10.1007/s11465-019-0580-8

Abstract: Considering these deficiencies, this study established a coupled flapwise–chordwise–axial–torsional dynamicthe degree of coupling among flapwise, chordwise, and torsional directions were quantified via modal strain

Keywords： elastic-support boundary     pre-twisted beam     semi-analytic method     modal strain energy ratio     torsional vibration    

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Title Author Date Type Operation

Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Journal Article

A dynamic stiffness-based framework for harmonic input estimation and response reconstruction considering

Yixian LI; Limin SUN; Wang ZHU; Wei ZHANG

Journal Article

Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Journal Article

Separation and extraction of bridge dynamic strain data

Baijian WU, Zhaoxia LI, Ying WANG, T. H. T. CHAN,

Journal Article

Experimental investigation on dynamic response ofchamber to simulate deepwater explosive

Zhong Dongwang,Li Linna

Journal Article

Energy-aware scheduling with reconstruction and frequency equalization on heterogeneous systems

Yong-xing LIU,Ken-li LI,Zhuo TANG,Ke-qin LI

Journal Article

Dynamic characteristics of an NC table with phase space reconstruction

Linhong WANG, Bo WU, Runsheng DU, Shuzi YANG

Journal Article

Isogeometric analysis based on geometric reconstruction models

Journal Article

Dynamic failure analysis on granite under uniaxial impact compressive load

ZHAI Yue, MA Guowei, HU Changming, ZHAO Junhai

Journal Article

Fractal characteristic evaluation and interpolation reconstruction for surface topography of drilled

Journal Article

Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Journal Article

Shape reconstruction of parallelogram flaw

ZHENG Gangfeng, WU Bin, HE Cunfu

Journal Article

The ecological system and the regionalization of landscape reconstruction in northwest of China

Peicheng LI,Guoyuan DU,Qilei LI,Jinfeng WANG,Feimin ZHENG

Journal Article

Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

Journal Article

Dynamic modeling and coupling characteristics of rotating inclined beams with twisted-shape sections

Jin ZENG, Chenguang ZHAO, Hui MA, Bangchun WEN

Journal Article