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Research and assessment of high efficiency temporary plugging agent used for refracturing

Yan Zhitao

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 20-25

Abstract: And, nonlinear finite element numerical simulation analysis has been adopted for temporarily blockingIt is can be seen from the experiment and finite element analysis that the new temporary plugging agent

Keywords： refracturing     temporary plugging agent     fracture divert     non-linear finite element analysis     gas protection    

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Comparison between linear and non-linear forms of pseudo-first-order and pseudo-second-order adsorption

Junxiong LIN , Lan WANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 320-324 doi: 10.1007/s11783-009-0030-7

Abstract: The best-fit equations of linear and non-linear forms of the two widely used kinetic models, namely pseudo-first-orderthe correlation coefficient () and the normalized standard deviation Δ(%) were employed as error analysisThe results show that the non-linear forms of pseudo-first-order and pseudo-second-order models werethus, the non-linear forms of kinetic equations should be primarily used to obtain the adsorption parametersIn addition, the Δ(%) method for error analysis may be better to determine the best-fitting model

Keywords： adsorption     pseudo-first order     pseudo-second order     kinetic model     linear method     non-linear method    

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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: In this paper, vibration utilization is classified into linear or non-linear vibrations, waves, and electric-magnetic

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

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Linear and nonlinear elastic analysis of closely spaced strip foundations using Pasternak model

Priyanka GHOSH, S. RAJESH, J. SAI CHAND

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 228-243 doi: 10.1007/s11709-016-0370-x

Abstract: The study considers small strain problem and has been performed using linear as well as nonlinear elasticanalysis to determine the interaction effect of two nearby strip footings.The linear elastic analysis has been carried out by deriving the equations for the interference effecthas been performed using the finite difference method to solve the second order nonlinear differentialResults obtained from the linear and the nonlinear elastic analysis are presented in terms of non-dimensional

Keywords： bearing capacity     linear and non-linear elasticity     foundation     interaction effect     numerical modeling     Pasternak    

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Scrutiny of non-linear differential equations Euler-Bernoulli beam with large rotational deviation by

M. R. AKBARI,M. NIMAFAR,D. D. GANJI,M. M. AKBARZADE

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 402-408 doi: 10.1007/s11465-014-0316-8

Abstract: assumptions upon which the Euler-Bernoulli beam theory is founded allow it to be extended to more advanced analysisEuler-Bernoulli beam theory can also be extended to the analysis of curved beams, beam buckling, composite

Keywords： AGM     critical load of columns     large deformations of beam     nonlinear differential equation    

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Chaotic behavior of LNG after stratification in main stream region of storage tank

WANG Jingjing, MA Xiaoqian

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 514-518 doi: 10.1007/s11708-008-0076-4

Abstract: Based on non-linear dynamics, a 2-dimensional Rayleigh-Benard convection model was developed to simulate

Keywords： Runge-Kutta     non-linear     corresponding     temperature     addition    

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Seismic progressive-failure analysis of tall steel structures under beam-removal scenarios

Behrouz BEHNAM, Fahimeh SHOJAEI, Hamid Reza RONAGH

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 904-917 doi: 10.1007/s11709-019-0525-7

Abstract: Investigating progressive collapse of tall structures under beam removal scenarios after earthquake is a complex subject because the earthquake damage acts as an initial condition for the subsequent scenario. An investigation is performed here on a 10 story steel moment resisting structure designed to meet the life safety level of performance when different beam removal scenarios after earthquake are considered. To this end, the structure is first subjected to the design earthquake simulated by Tabas earthquake acceleration. The beam removal scenarios are then considered at different locations assuming that both ends connections of the beam to columns are simultaneously detached from the columns; thus the removed beam falls on the underneath floor with an impact. This imposes considerable loads to the structure leading to a progressive collapse in all the scenarios considered. The results also show that the upper stories are much more vulnerable under such scenarios than the lower stories. Hence, more attention shall be paid to the beam-to-column connections of the upper stories during the process of design and construction.

Keywords： progressive collapse     tall steel moment-resisting frames     non-linear dynamic analysis     beam-removal scenario    

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Spatial distribution of ecological security status assessment of West-Liaohe River based on geographic information system

WANG Geng, WU Wei

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4,   Pages 471-476 doi: 10.1007/s11783-007-0075-4

Abstract: is a hot research area in resource and environmental science, which involves data with much spatial, non-linear

Keywords： environmental     Eco-security assessment     resource     Geographic information     non-linear    

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Scaled boundary finite element method with exact defining curves for two-dimensional linear multi-field

Jaroon RUNGAMORNRAT, Chung Nguyen VAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 201-214 doi: 10.1007/s11709-018-0488-0

Abstract: This paper presents an efficient and accurate numerical technique based upon the scaled boundary finiteelement method for the analysis of two-dimensional, linear, second-order, boundary value problems withThe scaled boundary finite element formulation is established in a general framework allowing single-fieldStandard finite element shape functions are employed in the discretization of both trial and test functionsthen fully investigated for various scenarios to demonstrate the accuracy in comparison with standard linear

Keywords： multi-field problems     defining curve     exact geometry     general boundary conditions     SBFEM    

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Finite element analysis of controlled low strength materials

Vahid ALIZADEH

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1243-1250 doi: 10.1007/s11709-019-0553-3

Abstract: This paper describes the numerical modeling of CLSM fills with finite element method under compressionThe capability of the finite element approach for the analysis of CLSM fills was assessed by a comparisonThe analysis shows that the behavior of a CLSM fill while subject to a failure compression load or pullout

Keywords： CLSM     finite element method     compressive strength     pullout     numerical modeling     plastic damage model    

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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: A three-dimensional finite element analysis (FEA) based CFD technique for finding the spread of pressureThe results of CFD are mainly obtained to fine tune the thermal analysis.Thus, in this focus, a flow analysis assisted thermal analysis is presented to predict the steady stateThe vibration analysis is illustrated.Harmonic analysis such as sine sweep analysis to identify the range of speeds causing high vibrations

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

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Nonlinear finite element analysis of short-limbed wall

Zhi ZHANG, Qian GU, Shaomin PENG, Quanzhi CAI

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 125-130 doi: 10.1007/s11709-009-0025-2

Abstract: Combined with the actual project, this paper carries out a nonlinear finite element analysis on 2 groups, 6 short-limbed shear walls, through the finite element calculation software ANSYS.

Keywords： short-limbed wall (SLW)     nonlinear finite element     separate model     axial compression ratios    

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Optimal localization of complex surfaces in CAD-based inspection

XU Jinting, LIU Weijun, SUN Yuwen

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 426-433 doi: 10.1007/s11465-008-0068-4

Abstract: Since this approach does not involve an iterative process of solving non-linear equations for the closestAnalysis and comparison of experimental results demonstrate the validity and applicability of the algorithm

Keywords： deviation     comparison     non-linear     localization     inspection    

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Finite element analysis of creep for plane steel frames in fire

Hui ZHU, Yuching WU

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 297-307 doi: 10.1007/s11709-012-0162-x

Abstract: In this paper, a co-rotational total Lagrangian finite element formulation is derived, and the correspondingof the numerical model proposed in this paper is greatly beneficial to the steel industry for creep analysis

Keywords： creep     plane steel frame     fire     finite element method     geometric nonlinearity    

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Uncertainty assessment in hydro-mechanical-coupled analysis of saturated porous medium applying fuzzyfinite element method

Farhoud KALATEH, Farideh HOSSEINEJAD

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 387-410 doi: 10.1007/s11709-019-0601-z

Abstract: The purpose of the present study was to develop a fuzzy finite element method, for uncertainty quantificationFuzzy analysis procedure was verified, and several numerical examples were analyzed by the developedmethod, including a dynamic analysis of elastic soil column and elastic foundation under ramp loading

Keywords： fuzzy finite element method     saturated soil     hydro-mechanical coupled equations     coupled analysis     uncertaintyanalysis    

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Title Author Date Type Operation

Research and assessment of high efficiency temporary plugging agent used for refracturing

Yan Zhitao

Journal Article

Comparison between linear and non-linear forms of pseudo-first-order and pseudo-second-order adsorption

Junxiong LIN , Lan WANG ,

Journal Article

Recent development of vibration utilization engineering

WEN Bangchun

Journal Article

Linear and nonlinear elastic analysis of closely spaced strip foundations using Pasternak model

Priyanka GHOSH, S. RAJESH, J. SAI CHAND

Journal Article

Scrutiny of non-linear differential equations Euler-Bernoulli beam with large rotational deviation by

M. R. AKBARI,M. NIMAFAR,D. D. GANJI,M. M. AKBARZADE

Journal Article

Chaotic behavior of LNG after stratification in main stream region of storage tank

WANG Jingjing, MA Xiaoqian

Journal Article

Seismic progressive-failure analysis of tall steel structures under beam-removal scenarios

Behrouz BEHNAM, Fahimeh SHOJAEI, Hamid Reza RONAGH

Journal Article

Spatial distribution of ecological security status assessment of West-Liaohe River based on geographic information system

WANG Geng, WU Wei

Journal Article

Scaled boundary finite element method with exact defining curves for two-dimensional linear multi-field

Jaroon RUNGAMORNRAT, Chung Nguyen VAN

Journal Article

Finite element analysis of controlled low strength materials

Vahid ALIZADEH

Journal Article

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

B. VIDHYA,K. N. SRINIVAS

Journal Article

Nonlinear finite element analysis of short-limbed wall

Zhi ZHANG, Qian GU, Shaomin PENG, Quanzhi CAI

Journal Article

Optimal localization of complex surfaces in CAD-based inspection

XU Jinting, LIU Weijun, SUN Yuwen

Journal Article

Finite element analysis of creep for plane steel frames in fire

Hui ZHU, Yuching WU

Journal Article

Uncertainty assessment in hydro-mechanical-coupled analysis of saturated porous medium applying fuzzyfinite element method

Farhoud KALATEH, Farideh HOSSEINEJAD

Journal Article