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Scaling up of cluster beam deposition technology for catalysis application

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1360-1379 doi: 10.1007/s11705-021-2101-7

Abstract: Many research works have demonstrated that the combination of atomically precise cluster deposition and theoretical calculations is able to address fundamental aspects of size-effects, cluster-support interactions, and reaction mechanisms of cluster materials. Although the wet chemistry method has been widely used to synthesize nanoparticles, the gas-phase synthesis and size-selected strategy was the only method to prepare supported metal clusters with precise numbers of atoms for a long time. However, the low throughput of the physical synthesis method has severely constrained its wider adoption for catalysis applications. In this review, we introduce the latest progress on three types of cluster source which have the most promising potential for scale-up, including sputtering gas aggregation source, pulsed microplasma cluster source, and matrix assembly cluster source. While the sputtering gas aggregation source is leading ahead with a production rate of ~20 mg·h–1, the pulsed microplasma source has the smallest physical dimensions which makes it possible to compact multiple such devices into a small volume for multiplied production rate. The matrix assembly source has the shortest development history, but already show an impressive deposition rate of ~10 mg·h–1. At the end of the review, the possible routes for further throughput scale-up are envisaged.

Keywords： nanoparticle     cluster     cluster beam deposition     magnetron sputtering     heterogeneous catalysis    

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Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0703-5

Abstract: In fiber laser beam welding (LBW), the selection of optimal processing parameters is challenging and

Keywords： laser beam welding     parameter optimization     metamodel     multi-objective    

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Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beam

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 675-689 doi: 10.1007/s11709-020-0625-4

Abstract: equivalent single layer approach is utilized for dynamic finite element procedures of 3D composite beam

Keywords： composite beam     dynamic finite element     degrees of freedom coupling     experimental validation     numerical validation    

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The calculation of maximum bending normal stress for sandwich beam based on revised single beam theory

Hao Jingxin,Liu Wenjin and Wu Xinfeng

Strategic Study of CAE 2014, Volume 16, Issue 4,   Pages 92-95

Abstract: Maximum bending normal stress is one of the important parameters to measure flexural property of sandwich beamTherefore，new methodology to calculate the stress is proposed based on the equivalent single beam theoryThe results showed that revised single beam theory (RSBT) are equivalent to multi-layer theory (MLT).When cross section of beam and maximum loading are fixed，the maximum bending normal stress calculatedaccordingly with increasing ratio of core thickness to the whole，but the result is constant for single beam

Keywords： sandwich beam     bending normal stress     single beam theory     bending property    

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Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 642-661 doi: 10.1007/s11709-017-0457-z

Abstract: as formability under extreme loads such as earthquakes are the primary challenges in the modeling of beam-to-columnand neural network methods have been presented in order to model the complex hysteresis behavior of beam-to-columntraining of the neural network, the experiments were carried out on samples with real dimensions of beam-to-columnthat the combinational modeling is able to display the complex narrowed hysteresis behavior of the beam-to-column

Keywords： beam to column connections     experiments     component method     neural network model     combinational modeling    

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Vibration analysis of a simply supported beam under moving mass based on moving finite element method

Zhuchao YE, Huaihai CHEN,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 397-400 doi: 10.1007/s11465-009-0044-7

Abstract: moving finite element (MFE) method is proposed to perform the dynamic analysis of a simply supported beamThe solution to the beam’s dynamic behaviors including its displacement is obtained via a Newmark-β method; the effects of the velocity and weight of the MM on the beam’s dynamic behaviorsthe inertial effects of the MM significantly affect the transverse responses of the simply supported beam

Keywords： simply supported beam     moving mass (MM)     transverse vibration     moving finite element (MFE)    

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Bending and vibration of a discontinuous beam with a curvic coupling under different axial forces

Heng LIU, Jie HONG, Dayi ZHANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 417-429 doi: 10.1007/s11465-019-0584-4

Abstract: the equations for the deflection curve and vibration frequencies of a simply supported discontinuous beamThe differential equations for the beam that consider moments of inertia, shearing effects, and gyroscopicThe deflection and vibration frequencies of the discontinuous beam are studied under different axialan experimental study is conducted to investigate the vibration characteristics of a discontinuous beam

Keywords： discontinuous beam     bending stiffness     transverse vibration     axial loads     gyroscopic moments    

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Dynamic analysis of composite beam subjected to harmonic moving load based on the third-order shear deformation

Mohammad Javad REZVANIL, Mohammad Hossein KARGARNOVIN, Davood YOUNESIAN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 409-418 doi: 10.1007/s11465-011-0245-8

Abstract:

The response of an infinite Timoshenko beam subjected to a harmonic moving load based on the third-orderThe beam is made of laminated composite, and located on a Pasternak viscoelastic foundation.solution is directed to compute the deflection and bending moment distribution along the length of the beamshear layer viscosity coefficients of foundation, velocity and frequency of the moving load over the beam

Keywords： timoshenko composite beam     pasternak viscoelastic foundation     third-order shear deformation theory (TSDT    

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Damage detection in beam-like structures using static shear energy redistribution

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1552-1564 doi: 10.1007/s11709-022-0903-4

Abstract: In this study, a static shear energy algorithm is presented for the damage assessment of beam-like structuresTherefore, the change in the static shear energy is employed to determine the damage locations in beam-likeadvantage of using shear energy as opposed to total energy is that only a few deflection data points of the beamA channel steel beam and rectangular concrete beam are employed as experimental cases to further verifyindicate that the proposed algorithm provides a simple and effective method for defect localization in beam-like

Keywords： damage detection     beam structure     strain energy     static displacement variation     energy damage index    

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Simulation of steel beam under ceiling jet based on a wind–fire–structure coupling model

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 78-98 doi: 10.1007/s11709-022-0936-8

Abstract: In this paper, the thermomechanical phenomena experienced by a ceiling jet and I-beam in a structuralVortices were found in the local area formed by the upper and lower flanges of the I-beam and the web

Keywords： CFD–FEM coupling     steel beam     wind     ceiling jet     numerical heat transfer    

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Lateral shear performance of sheathed post-and-beam wooden structures with small panels

Frontiers of Structural and Civil Engineering   Pages 1117-1131 doi: 10.1007/s11709-023-0939-0

Abstract: Sheathed post-and-beam wooden structures are distinct from light-wood structures.Based on the test and FE analysis results, the shear strength of the post-and-beam wooden structures

Keywords： post-and-beam wooden structures with sheathed walls     low reversed cyclic loading     bearing capacity     stiffness    

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Erratum to: Bending and vibration of a discontinuous beam with a curvic coupling under different axial

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0709-z

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Experimental analysis on strength and failure modes of wood beam-column connections

Zhenhua HUANG,Sheldon Q SHI,Liping CAI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 260-269 doi: 10.1007/s11709-014-0261-y

Abstract: experimentally examined the strength, failure modes, and behaviors of dowel-bearing and fiber-bearing wood beam-columnpreliminary tests in total), the authors observed that the typical bolted connection (dowel-bearing type wood beam-columnbehavior (large peak moment) under the monotonic loads, and the tenon joint connection (fiber-bearing wood beam-columnThe cyclic property of loading reduced the strength of the dowel-bearing type wood beam-column connections, but increased the strength of fiber-bearing type wood beam-column connections.

Keywords： wood     connection     dowel-bearing     fiber-bearing    

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Analytical method of capsizing probability in the time domain for ships in the random beam seas

LIU Liqin, TANG Yougang, LI Hongxia

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 361-366 doi: 10.1007/s11709-007-0048-5

Abstract: The nonlinear differential equation of the rolling motion of ships in random beam seas was established

Keywords： different     survival probability     different significant     nonlinear differential     narrowband    

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Crack detection of the cantilever beam using new triple hybrid algorithms based on Particle Swarm Optimization

Amin GHANNADIASL; Saeedeh GHAEMIFARD

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9,   Pages 1127-1140 doi: 10.1007/s11709-022-0838-9

Abstract: A strong correlation exists between the changes in the natural frequency of a concrete beam and the crackThus, the location and depth of a crack in a beam can be predicted by measuring its natural frequencyIn this paper, this is applied to identify crack location and depth in a cantilever beam using the new

Keywords： crack     cantilever beam     triple hybrid algorithms     Particle Swarm Optimization    

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Title Author Date Type Operation

Scaling up of cluster beam deposition technology for catalysis application

Journal Article

Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Journal Article

Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beam

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Journal Article

The calculation of maximum bending normal stress for sandwich beam based on revised single beam theory

Hao Jingxin,Liu Wenjin and Wu Xinfeng

Journal Article

Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Journal Article

Vibration analysis of a simply supported beam under moving mass based on moving finite element method

Zhuchao YE, Huaihai CHEN,

Journal Article

Bending and vibration of a discontinuous beam with a curvic coupling under different axial forces

Heng LIU, Jie HONG, Dayi ZHANG

Journal Article

Dynamic analysis of composite beam subjected to harmonic moving load based on the third-order shear deformation

Mohammad Javad REZVANIL, Mohammad Hossein KARGARNOVIN, Davood YOUNESIAN

Journal Article

Damage detection in beam-like structures using static shear energy redistribution

Journal Article

Simulation of steel beam under ceiling jet based on a wind–fire–structure coupling model

Journal Article

Lateral shear performance of sheathed post-and-beam wooden structures with small panels

Journal Article

Erratum to: Bending and vibration of a discontinuous beam with a curvic coupling under different axial

Journal Article

Experimental analysis on strength and failure modes of wood beam-column connections

Zhenhua HUANG,Sheldon Q SHI,Liping CAI

Journal Article

Analytical method of capsizing probability in the time domain for ships in the random beam seas

LIU Liqin, TANG Yougang, LI Hongxia

Journal Article

Crack detection of the cantilever beam using new triple hybrid algorithms based on Particle Swarm Optimization

Amin GHANNADIASL; Saeedeh GHAEMIFARD

Journal Article