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The Analysis on the Air-exciting-vibration Force of Steam Turbine

Chai Shan,Zhang Yaoming,Qu Qingwen,Zhao Youqun,Yao Fusheng

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 68-72

Abstract:

Based on the hydro-dynamics, the computing formulas for air-exciting-vibration force are derived forstraight blade, short twist blade, long twist blade and the control stage of steam turbine in uniform air-flowUsing the presented formulas, the air-exciting-vibration force can be directly calculated based on thedesign parameters and air-flow parameters of steam turbine.

Keywords： steam turbine     air-exciting-vibration force     hydro-dynamics    

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Non-convex sparse optimization-based impact force identification with limited vibration measurements

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0762-2

Abstract: Impact force identification is important for structure health monitoring especially in applications involvingDifferent from the traditional direct measurement method, the impact force identification technique isAs a typical inverse problem, impact force reconstruction and localization is a challenging task, whichMJX-TeXAtom-ORD">-ADMM is applied to solve the impact forceidentification problem with unknown force locations, which can realize simultaneous impact localization

Keywords： impact force identification     inverse problem     sparse regularization     under-determined condition     alternating    

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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.vibration characteristics.The performance of the vibration platform was evaluated by the vibration tests and UVAG experiments ofThe employment of ultrasonic vibration reduces the grinding force by 36% at most, thereby decreasing

Keywords： ultrasonic vibration-assisted grinding     perforated ultrasonic vibration platform     vibration characteristics     apparent elasticity method     grinding force     surface integrity    

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Machinability of ultrasonic vibration-assisted micro-grinding in biological bone using nanolubricant

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0717-z

Abstract: cooling capacity of dry grinding, poor visibility of drip irrigation surgery area, and large grinding forceA new micro-grinding process called ultrasonic vibration-assisted nanoparticle jet mist cooling (U-NJMCIt combines the advantages of ultrasonic vibration (UV) and nanoparticle jet mist cooling (NJMC).The grinding force, friction coefficient, specific grinding energy, and grinding temperature under dryResults showed that the minimum normal grinding force and tangential grinding force of U-NJMC micro-grinding

Keywords： micro-grinding     biological bone     ultrasonic vibration (UV)     nanoparticle jet mist cooling (NJMC)     grindingforce     grinding temperature    

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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: ., computational fluid dynamic (CFD), thermal, and vibration.three-dimensional finite element analysis (FEA) based CFD technique for finding the spread of pressure and airvelocity in air regions of the FRG is described.The vibration analysis is illustrated.The vibration analysis investigates the vibration of the FRG as a whole, which forms the contribution

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

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The zero-point energy of vibration and the Casimir force

Huang Zhixun

Strategic Study of CAE 2008, Volume 10, Issue 5,   Pages 63-69

Abstract: sheets very close together in vacuum, we'll find they attract each other with a small but measurable forceAll scientists agree that such a force does exist, but the trouble is physicists can't agree on what

Keywords： zero-point energy     zero-point field     energy of vacuum     Casimir force     theory of torsion field    

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Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 538-546 doi: 10.1007/s11465-020-0598-y

Abstract: The advanced longitudinal–torsional coupled ultrasonic vibration assisted drilling (LTC-UAD) method hasExperimental results indicate that LTC-UAD can reduce the thrust force by 39% compared to conventional

Keywords： longitudinal–torsional coupled     ultrasonically drilling     CFRP     thrust force     hole quality    

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A Simplified Nonlinear Model of Vertical Vortex-Induced Force on Box Decks for Predicting Stable Amplitudes

Le-Dong Zhu, Xiao-Liang Meng, Lin-Qing Du, Ming-Chang Ding

Engineering 2017, Volume 3, Issue 6,   Pages 854-862 doi: 10.1016/j.eng.2017.06.001

Abstract:

Wind-tunnel tests of a large-scale sectional model with synchronous measurements of force and vibrationThe mechanisms of the onset, development, and self-limiting phenomenon of the vertical vortex-induced vibrationThe former provides a constant negative damping ratio to the vibration system and is thus the essentialVIV amplitude, while the latter provides a positive damping ratio proportional to the square of the vibration

Keywords： Box deck of bridge     Vertical vortex-induced vibration     Vertical vortex-induced force     Simplified nonlinearmodel     Wind-tunnel test     Large-scale sectional model     Synchronous measurement of force and     vibration    

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Vibration Serviceability of Large-span Steel–Concrete Composite Beam with Precast Hollow Core Slabs Under Article

Jiepeng Liu, Shu Huang, Jiang Li, Y. Frank Chen

Engineering 2022, Volume 19, Issue 12,   Pages 93-104 doi: 10.1016/j.eng.2021.04.025

Abstract: study, 150 load–time histories of walking, excited by 25 test participants, are obtained using a forceSensitivity studies using the finite element method are conducted to investigate the vibration performance

Keywords： Composite beam     Hollow core slab     Walking force     Floor vibration     Mode shape    

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Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 187-197 doi: 10.1007/s11465-015-0339-9

Abstract: new size-dependent Kirchhoff micro-plate model to study the effect of interlayer van der Waals (vdW) forcefor the vibration analysis of multilayered graphene sheets (MLGSs).on modified strain gradient theory via principle of minimum potential energy, as only infinitesimal vibration

Keywords： graphene     van der Waals (vdW) force     modi- fied strain gradient elasticity theory     size effect parameter    

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Modeling limit force capacities of high force to volume lead extrusion dampers

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 609-622 doi: 10.1007/s11709-021-0724-x

Abstract: Small volumetric sizes and high force capacities define high-force-to-volume (HF2V) devices, which canHowever, the design of such devices for specific force capacities has proven difficult based on the complexitiesThis study developed upper- and lower-bound force capacity estimates from analytical mechanics basedThe proposed models were validated by comparing the predicted bounds to experimental force capacity data/sub>) pair has a mean lower-bound gap of 36%, meaning the lower bound was 74% of the actual device force

Keywords： extrusion     lead dampers     upper and lower bound     analytical modelling     limit force    

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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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Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration

Guilian YI, Yunkang SUI, Jiazheng DU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 229-234 doi: 10.1007/s11465-011-0128-z

Abstract:

To reduce vibration and noise, a damping layer and constraint layer are usually pasted on the innersurface of a gearbox thin shell, and their thicknesses are the main parameters in the vibration andThe normal acceleration of the point on the gearbox surface is the main index that can reflect the vibrationcharacteristics of the whole structure, and the vibration acceleration level is adopted to measure thedegree of the vibration and noise.

Keywords： Abaqus secondary development     Python language     vibration and noise reduction     K-S function     vibration acceleration    

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Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 412-417 doi: 10.1007/s11465-010-0114-x

Abstract: The behaviors of electrode displacement and force during spot welding under various conditions, suchAn electrode force peak is observed and believed relevant to the sufficient nugget size.

Keywords： aluminum     electrode displacement     electrode force     nugget size     data acquisition    

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Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 109-115 doi: 10.1007/s11709-010-0003-8

Abstract: To understand the structure and evolution of force chains, a photoelastic technique was improved forThe interparticle contact force distribution was found a peak around the mean value, a roughly exponentialtail for greater force and a dip toward zero for smaller force.The force chain network around the probe tip was depicted, and the contact angle distribution of particlesin force chains was found to be well aligned in the directions of major principal stress.

Keywords： granular matter     force chain     multiscale modeling    

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Title Author Date Type Operation

The Analysis on the Air-exciting-vibration Force of Steam Turbine

Chai Shan,Zhang Yaoming,Qu Qingwen,Zhao Youqun,Yao Fusheng

Journal Article

Non-convex sparse optimization-based impact force identification with limited vibration measurements

Journal Article

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

Journal Article

Machinability of ultrasonic vibration-assisted micro-grinding in biological bone using nanolubricant

Journal Article

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

B. VIDHYA,K. N. SRINIVAS

Journal Article

The zero-point energy of vibration and the Casimir force

Huang Zhixun

Journal Article

Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Journal Article

A Simplified Nonlinear Model of Vertical Vortex-Induced Force on Box Decks for Predicting Stable Amplitudes

Le-Dong Zhu, Xiao-Liang Meng, Lin-Qing Du, Ming-Chang Ding

Journal Article

Vibration Serviceability of Large-span Steel–Concrete Composite Beam with Precast Hollow Core Slabs Under

Jiepeng Liu, Shu Huang, Jiang Li, Y. Frank Chen

Journal Article

Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Journal Article

Modeling limit force capacities of high force to volume lead extrusion dampers

Journal Article

Recent development of vibration utilization engineering

WEN Bangchun

Journal Article

Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration

Guilian YI, Yunkang SUI, Jiazheng DU

Journal Article

Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Journal Article

Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Journal Article