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Slope Stability Analysis by Strength Reduction FEM

Zheng Yingren,Zhao Shangyi,Zhang Luyu

Strategic Study of CAE 2002, Volume 4, Issue 10,   Pages 57-61

Abstract: The safety factor is then obtained by c - ψ reduction algorithm.Strength Reduction FEM (SRFEM) presents a powerful alternative approach for slope stability analysis,This paper analyzes the precision and error caused by different soil yield criterions、FEM itself、slopeThrough a series of case studies, the results show average error of safety factor between Strength ReductionFEM and traditional limit equilibrium method (Bishop simplified method) is 3 %～8 %，the error between

Keywords： slope stability analysis     strength reduction by FEM     yield criterions    

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Strength reduction factors for structural rubbercrete

Bashar S. MOHAMMED,N. J. AZMI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 270-281 doi: 10.1007/s11709-014-0265-7

Abstract: fresh and mechanical properties of rubbercrete such as slump, air content, unit weight, compressive strength, flexural strength, splitting tensile strength and modulus of elasticity.Equations for the reduction factors (RFs) for compressive strength, flexural strength, splitting tensilestrength and modulus of elasticity have been developed.

Keywords： crumb rubber     recycled tire     mix design     reduction factor     strength     modulus elasticity    

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Seismic response reduction of a three-story building by an MR grease damper

Tomoki SAKURAI, Shin MORISHITA

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 224-233 doi: 10.1007/s11465-017-0413-6

Abstract: is widely known as a smart material with rheological properties that can be varied by magnetic field strength

Keywords： MR grease damper     seismic damper     vibration control     structural response     FEM analysis    

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Effect of environment change on the strength of cement/lime treated clays

Takenori HINO, Rui JIA, Seiji SUEYOSHI, Tri HARIANTO

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 153-165 doi: 10.1007/s11709-012-0153-y

Abstract: The mechanism of the ground environment change and its effect on the strength of cement/lime treatedThe strength development of improved soil using cement and lime in different curing environments wasinvestigated in the laboratory for studying the effect of environment change on the strength also.When examining the long-term strength for preventing strength degradation, the effect of environmentalThe importance of measuring pH and oxidation-reduction potential (ORP) of the ground for cement/lime

Keywords： soil solidification     ground environment     strength deterioration     pH     oxidation-reduction potential (ORP)    

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Engineering Application of FEM Updating Technology

Chen Decheng,Wei Zhensong,Qu Guangji,Zhu An wen,Xiao Yifang

Strategic Study of CAE 2001, Volume 3, Issue 10,   Pages 59-63

Abstract:

In this paper, focusing on practical engineering application of Finite Element Model (FEM) updatingThis paper explains the basic thought and numerical method of a FEM updating approach that has achievedpaper also presents the difficulties in the practical engineering application of Finite Element Model (FEM

Keywords： FEM updating     test model     sensitivity     dynamic reduction     natural frequency     mode shape    

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Structural characteristics of cement-stabilized soil bases with 3D finite element method

Yunfeng PENG, Yunlong HE,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 428-434 doi: 10.1007/s11709-009-0059-5

Abstract: Cement-stabilized soil bases have been widely used in expressways due to its high strength, appropriateIn this paper, the 3D elastic-plastic finite element method (FEM) was used to analyze the mechanical

Keywords： different     strength     asphalt-concrete pavement     FEM     appropriate stiffness    

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Two-scale modeling of granular materials: A FEM-FEM approach

Yun-Zhu CAI, Yu-Ching WU

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 304-315 doi: 10.1007/s11709-013-0213-y

Abstract: In the present paper, a homogenization-based two-scale FEM-FEM model is developed to simulate compactionsThe two-scale FEM-FEM model is developed in which each particle is treated individually with the appropriate

Keywords： homogenization     two-scale     representative volume element     compaction     granular assembly     finite element method    

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3D finite element method (FEM) simulation of groundwater flow during backward erosion piping

Kristine VANDENBOER,Vera van BEEK,Adam BEZUIJEN

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2,   Pages 160-166 doi: 10.1007/s11709-014-0257-7

Abstract: Backward erosion piping is an important failure mechanism for cohesive water retaining structures which are founded on a sandy aquifer. At present, the prediction models for safety assessment are often based on 2D assumptions. In this work, a 3D numerical approach of the groundwater flow leading to the erosion mechanism of backward erosion piping is presented and discussed. Comparison of the 2D and 3D numerical results explicitly demonstrates the inherent 3D nature of the piping phenomenon. In addition, the influence of the seepage length is investigated and discussed for both piping initiation and piping progression. The results clearly indicate the superiority of the presented 3D numerical model compared to the established 2D approach. Moreover, the 3D numerical results enable a better understanding of the complex physical mechanism involved in backward erosion piping and thus can lead to a significant improvement in the safety assessment of water retaining structures.

Keywords： backward erosion piping     groundwater flow     3D finite element method (FEM)    

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Research on acoustic-structure sensitivity using FEM and BEM

ZHANG Jun, ZHAO Wenzhong, ZHANG Weiying

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 62-67 doi: 10.1007/s11465-007-0010-1

Abstract: Using FEM (finite element method) and BEM (boundary element method) acoustic-structure sensitivity wasvelocity sensitivity with respect to structure design variable were carried out by using structural FEMThen, acoustic-structure sensitivity was computed by linking velocity sensitivity in FEM and acousticResults show that acoustic-structure sensitivity method linked with FEM and BEM is effective and correct

Keywords： sensitivity method     BEM     acoustic pressure     pressure sensitivity     frequency    

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FEM-based strain analysis study for multilayer sheet forming process

Rongjing ZHANG,Lihui LANG,Rizwan ZAFAR

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 373-379 doi: 10.1007/s11465-015-0371-9

Abstract: To further explore the novel method, this study conducts a finite element method-based (FEM-based) strain

Keywords： finite element method (FEM)     strain analysis     multilayer sheet forming    

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end-to-end 3d seismic simulation of underground structures due to point dislocation source by using an FK-FEM

Zhenning BA; Jisai FU; Zhihui ZHU; Hao ZHONG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1515-1529 doi: 10.1007/s11709-022-0887-0

Abstract: Based on the domain reduction idea and artificial boundary substructure method, this paper proposes anFK-FEM hybrid approach by integrating the advantages of FK and FEM (i.e., FK can efficiently generatehigh-frequency three translational motion, while FEM has rich elements types and constitutive modelsCompared with the plane wave field input method, the FK-FEM hybrid approach can reflect the spatial variability

Keywords： source-to-structure simulation     FK-FEM hybrid approach     underground structures     point dislocation source    

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The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired

Gui-Rong Liu

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 456-477 doi: 10.1007/s11709-019-0519-5

Abstract:

The smoothed finite element method (S-FEM) was originated by G R Liu by combining some meshfree techniqueswith the well-established standard finite element method (FEM).article first provides a concise and easy-to-follow presentation of key formulations used in the S-FEMA number of important properties and unique features of S-FEM models are discussed in detail, includingThe S-FEM is thus ideal for automation in computations and adaptive analyses, and hence has profound

Keywords： computational method     finite element method     smoothed finite element method     strain smoothing technique     smoothing domain     weakened weak form     solid mechanics     softening effect     upper bound solution    

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Evaluating the material strength from fracture angle under uniaxial loading

Jitang FAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 288-293 doi: 10.1007/s11709-018-0480-8

Abstract: The most common experimental methods of measuring material strength are the uniaxial compressive andCompressive strength is higher than tensile strength for a material.In this work, a unified relation of material strength under uniaxial compression and tension is developedThis constitutive relation is quantitatively illustrated by a function for analyzing the material strengthIt is full of interest to give a scientific illustration for designing the high-strength materials and

Keywords： strength     fracture     mechanics    

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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 plane-strain structures. We use two levels of mesh repartitioning for the finite element limit analysis. The master level handles an adaptive primal-mesh process through a dissipation-based indicator. The slave level performs the subdivision of each triangle into three sub-triangles and constitutes a dual mesh from a pair of two adjacent sub-triangles shared by common edges of the primal mesh. Applying a strain smoothing projection to the strain rates on the dual mesh, the incompressibility constraint and the flow rule constraint are imposed over the edge-based smoothing domains and everywhere in the problem domain. The limit analysis problem is recast into the compact form of a second-order cone programming (SOCP) for the purpose of exploiting interior-point solvers. The present method retains a low number of optimization variables. It offers a convenient way for designing and solving the large-scale optimization problems effectively. Several benchmark examples are given to show the simplicity and effectiveness of the present method.

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

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Stability analysis of a high loess slope reinforced by the combination system of soil nails and stabilization piles

Jiu-jiang WU,Qian-gong CHENG,Xin LIANG,Jian-Lei CAO

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 252-259 doi: 10.1007/s11709-014-0260-z

Abstract: Compared to the results from the Sweden circular slip surface, the data derived from the method of phi/c reduction

Keywords： high loess slope     CSNSP     PLAXIS     phi/c strength reduction method     Sweden circular slip surface    

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Title Author Date Type Operation

Slope Stability Analysis by Strength Reduction FEM

Zheng Yingren,Zhao Shangyi,Zhang Luyu

Journal Article

Strength reduction factors for structural rubbercrete

Bashar S. MOHAMMED,N. J. AZMI

Journal Article

Seismic response reduction of a three-story building by an MR grease damper

Tomoki SAKURAI, Shin MORISHITA

Journal Article

Effect of environment change on the strength of cement/lime treated clays

Takenori HINO, Rui JIA, Seiji SUEYOSHI, Tri HARIANTO

Journal Article

Engineering Application of FEM Updating Technology

Chen Decheng,Wei Zhensong,Qu Guangji,Zhu An wen,Xiao Yifang

Journal Article

Structural characteristics of cement-stabilized soil bases with 3D finite element method

Yunfeng PENG, Yunlong HE,

Journal Article

Two-scale modeling of granular materials: A FEM-FEM approach

Yun-Zhu CAI, Yu-Ching WU

Journal Article

3D finite element method (FEM) simulation of groundwater flow during backward erosion piping

Kristine VANDENBOER,Vera van BEEK,Adam BEZUIJEN

Journal Article

Research on acoustic-structure sensitivity using FEM and BEM

ZHANG Jun, ZHAO Wenzhong, ZHANG Weiying

Journal Article

FEM-based strain analysis study for multilayer sheet forming process

Rongjing ZHANG,Lihui LANG,Rizwan ZAFAR

Journal Article

end-to-end 3d seismic simulation of underground structures due to point dislocation source by using an FK-FEM

Zhenning BA; Jisai FU; Zhihui ZHU; Hao ZHONG

Journal Article

The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired

Gui-Rong Liu

Journal Article

Evaluating the material strength from fracture angle under uniaxial loading

Jitang FAN

Journal Article

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

H. NGUYEN-XUAN,T. RABCZUK

Journal Article

Stability analysis of a high loess slope reinforced by the combination system of soil nails and stabilization piles

Jiu-jiang WU,Qian-gong CHENG,Xin LIANG,Jian-Lei CAO

Journal Article