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Semi-analytical approach for free vibration analysis of cracked beams resting on two-parameter elastic

Alborz MIRZABEIGY,Firooz BAKHTIARI-NEJAD

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 191-202 doi: 10.1007/s11465-014-0293-y

Abstract:

In present study, free vibration of cracked beams resting on two-parameter elastic foundation withEuler-Bernoulli beam hypothesis has been applied and translational and rotational elastic springs inThe crack is modeled as a mass-less rotational spring which divides beam into two segments.deals with general problem, the derived formulation has capability for analyzing free vibration of crackedbeam with every boundary condition.

Keywords： free vibration     cracked beam     elastic foundation     restrained ends     differential transform method    

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Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 405-419 doi: 10.1007/s11709-015-0310-1

Abstract: The free vibration analysis of cracked thin plates via a quasi-convex coupled isogeometric-meshfree methodSubsequently, this approach is exploited to study the free vibration analysis of cracked plates, in which

Keywords： meshfree method     isogeometric analysis     quasi-convex isogeometric-meshfree method     free vibration     cracked    

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Adaptive selective ES-FEM limit analysis of cracked plane-strain structures

H. NGUYEN-XUAN,T. RABCZUK

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 478-490 doi: 10.1007/s11709-015-0317-7

Abstract: This paper presents a simple and efficient approach for predicting the plastic limit loads in cracked

Keywords： cracked structure     limit analysis     von Mises criterion     edge-based strain smoothing     second-order cone programming    

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Influence of welding residual stresses on the ductile crack growth resistance of circumferentially cracked

Xiaobo REN, Odd M. AKSELSEN, B?rd NYHUS, Zhiliang ZHANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 217-223 doi: 10.1007/s11709-012-0169-3

Abstract: on the effect of welding residual stress on the ductile crack growth resistance of circumferentially cracked

Keywords： residual stress     ductile crack growth resistance     complete Gurson model     eigenstrain method    

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Dynamics analysis of a cracked dual-disk over-hung rotor-bearing system

CHEN Hong, LI He, WEN Bang-chun, ZHANG Xiao-wei

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 204-208 doi: 10.1007/s11465-006-0002-6

Abstract: A dynamic model of a dual-disk vertical over-hung rotor-bearing system is developed, taking into account nonlinear oil-film force. Its dynamic behaviors are investigated by numerical Runge-Kutta method. Its bifurcation and chaos characteristics are analyzed with crack fault and without crack fault. By analyzing the bifurcation plot, Poincare section plots and amplitude spectra, we found that the crack greatly influences the dynamic characteristics of the rotor-bearing system. Because of the strong effect of the nonlinear oil-film force and crack to the system, 1/2 times, 1/3 times frequency components appear in the response spectrum map. The results may bring up theoretical references for fault diagnosis of rotor-bearing systems.

Keywords： nonlinear oil-film     diagnosis     bifurcation     dynamic     numerical Runge-Kutta    

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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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Prediction of performance, combustion and emission characteristics of diesel-thermal cracked cashew nut

Arunachalam VELMURUGAN,Marimuthu LOGANATHAN,E. James GUNASEKARAN

Frontiers in Energy 2016, Volume 10, Issue 1,   Pages 114-124 doi: 10.1007/s11708-016-0394-x

Abstract: combustion and emissions of a single cylinder, four stroke stationary, diesel engine operated by thermal cracked

Keywords： cashew nut shell liquid (CNSL)     artificial neural networks (ANN)     thermal cracking     mean square error (MSE)    

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extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3) for free vibration analysis of cracked

M. H. NGUYEN-THOI,L. Le-ANH,V. Ho-HUU,H. Dang-TRUNG,T. NGUYEN-THOI

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 341-358 doi: 10.1007/s11709-015-0302-1

Abstract: The paper hence tries to extend the CS-FEM-DSG3 for free vibration analysis of cracked Reissner-MindlinThe accuracy and reliability of the novel XCS-FEM-DSG3 for free vibration analysis of cracked Reissner-Mindlin

Keywords： cracked Reissner-Mindlin shell     free vibration analysis     cell-based smoothed discrete shear gap method    

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Development and Commercial Application of FCC Process for Maximizing Iso-Paraffins (MIP) in Cracked Naphtha

Xu Youhao,Zhang Jiushun,Long Jun,He Mingyuan,Xu Hui,Hao Xiren

Strategic Study of CAE 2003, Volume 5, Issue 5,   Pages 55-58

Abstract: The volume fraction of olefin in the cracked naphtha dropped by 14.1% while the volume fraction of isoparaffin

Keywords： catalytic cracking     cracked naphtha     olefin     isoparaffin     aromatic    

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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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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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disrupting chemicals from water through urethane functionalization of microfiltration membranes via electron beam

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1805-6

Abstract:

● Urethane functionalities created on PES membranes via electron beam

Keywords： Surface functionalization     Electron beam irradiation     Microfiltration     Endocrine disrupting chemicals    

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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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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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Title Author Date Type Operation

Semi-analytical approach for free vibration analysis of cracked beams resting on two-parameter elastic

Alborz MIRZABEIGY,Firooz BAKHTIARI-NEJAD

Journal Article

Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Journal Article

Adaptive selective ES-FEM limit analysis of cracked plane-strain structures

H. NGUYEN-XUAN,T. RABCZUK

Journal Article

Influence of welding residual stresses on the ductile crack growth resistance of circumferentially cracked

Xiaobo REN, Odd M. AKSELSEN, B?rd NYHUS, Zhiliang ZHANG

Journal Article

Dynamics analysis of a cracked dual-disk over-hung rotor-bearing system

CHEN Hong, LI He, WEN Bang-chun, ZHANG Xiao-wei

Journal Article

Scaling up of cluster beam deposition technology for catalysis application

Journal Article

Prediction of performance, combustion and emission characteristics of diesel-thermal cracked cashew nut

Arunachalam VELMURUGAN,Marimuthu LOGANATHAN,E. James GUNASEKARAN

Journal Article

extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3) for free vibration analysis of cracked

M. H. NGUYEN-THOI,L. Le-ANH,V. Ho-HUU,H. Dang-TRUNG,T. NGUYEN-THOI

Journal Article

Development and Commercial Application of FCC Process for Maximizing Iso-Paraffins (MIP) in Cracked Naphtha

Xu Youhao,Zhang Jiushun,Long Jun,He Mingyuan,Xu Hui,Hao Xiren

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

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

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Journal Article

disrupting chemicals from water through urethane functionalization of microfiltration membranes via electron beam

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

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

Heng LIU, Jie HONG, Dayi ZHANG

Journal Article