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Stick‐slip like behavior in shear fracture propagation including the effect of fluid flow Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20210115
Tim Hageman; René de BorstShear‐based fracture propagation in fluid‐saturated porous materials is investigated using a displacement–pressure formulation that includes acceleration and inertial effects of the fluid. Pressure‐dependent plasticity with a nonassociated flow rule is adopted to realistically represent the stresses in the porous bulk material. The domain is discretized using unequal order T‐splines and cast into a

An analytical model for the interaction between two dissimilar piles in a finite soil layer Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20210114
Huan Liu; Qijian LiuAn analytical method is developed for the interaction between two dissimilar piles subjected to vertical loadings in a finite soil layer with a rigid base. A fictitious soil column is assumed for the corresponding shaft and the moduli of the soil–pile rod are expressed as a Heaviside step function of the modulus. The vertical soil displacements and the shaft resistances are calculated as the combined

Bifurcation analysis of shear band in sand under true triaxial conditions with hypoplasticity Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20210112
Wei Zhang; Shun Wang; Yang Wu; Wei WuPredicting the onset of shear band is of significance in understanding the failure of geomaterials. The prediction accuracy is dictated by the constitutive model used for the description of the pre‐bifurcation behaviour. In this study, we first modify a recently proposed hypoplastic constitutive model by incorporating a general strength criterion and a stiffness function. We proceed to consider the

Discrete geometric modeling of granular soils based on statistical percolative principles: A 2D implementation Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20210112
Shmulik Pinkert; Yuval LaromThis study proposes a new geometric modeling approach for a discrete representation of a realistic pore‐scale morphology by using an amorphous, non‐Euclidean, geometry of the shape of soil grains. The soil‐skeleton composition process follows a consistent, statistically based, algorithm by implementing ideas derived from both fractal and percolation theories. Although the model yields random amorphous

Thermo‐poroelastic responses of a pressure‐driven fracture in a carbon storage reservoir and the implications for injectivity and caprock integrity Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20210105
Pengcheng Fu; Xin Ju; Jixiang Huang; Randolph R. Settgast; Fang Liu; Joseph P. MorrisCO2 injection into a reservoir with marginal permeability (≲ 10−14 m2) could induce pressure high enough to fracture the reservoir rock and/or caprock. A pressure‐driven fracture can immensely enhance the injectivity and would not compromise the integrity of the overall storage complex as long as the fracture is contained vertically. Conventional models for geologic carbon storage simply treat fractures

Time‐resolved model for geothermal engineering in high porosity Slochteren sandstone Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20210105
Aditya Singh; Peter A. FokkerThis work is an extension of the time‐resolved poro‐elasto‐plastic Mohr‐Coulomb model by Fokker et al to include a more realistic constitutive model. Experiments on Slochteren sandstone revealed that the inelastic deformation contributes significantly in compressive deformation almost in all stages of loading and instigated the development of a Cam‐Clay‐like model to reproduce the Slochteren sandstone

A cover‐based contact detection approach for irregular convex polygons in discontinuous deformation analysis Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201115
Xiaoying Zhuang; Fei Zheng; Hong Zheng; Yu‐Yong Jiao; Timon Rabczuk; Peter WriggersIrregular polygon shapes (eg, with small edges or small angles) are usually encountered in the contact simulation of discrete block systems. Treatment of irregular polygons in contact detection process has critical effects on the robustness and efficiency of the discontinuous computation approach. The present work proposes a cover‐based strategy to detect and solve contacts of irregular convex polygons

Effect of gas content in macropores on hydraulic fracturing in rocks using a fully coupled DEM/CFD approach Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201115
M. Krzaczek; M. Nitka; J. TejchmanThe paper focuses on the effect of the gas content in rock macropores on a hydraulic fracturing process. The process was simulated by combining the discrete element method (DEM) with computational fluid dynamics (CFD) under two‐dimensional (2D) isothermal conditions. The mechanical behavior of the rock matrix was simulated with DEM, and CFD was used for describing the behavior of laminar two‐phase

3D failure envelope of a rigid pile embedded in a cohesive soil using finite element limit analysis Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201205
Noussaiba Graine; Mohammed Hjiaj; Kristian KrabbenhoftIn this paper, numerical limit analysis is applied to evaluate the bearing capacity of a single rigid pile embedded in a ponderable homogeneous cohesive‐frictionless soil subjected to vertical, horizontal, and moment (VHM) loading combinations. All loads act in the same plane. Accurate lower and upper bounds are calculated using finite element limit analysis code OPTUM G3 . As the gap between the bounds

Scatterer identification in a 2D geophysical medium using an augmented computational time reversal method Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20210101
Daniel Rabinovich; Dan Givoli; Jacobo Bielak; Eli TurkelThe problem of identifying an obstacle (scatterer) in the form of a cavity in a 2D geophysical medium is considered. This is posed as an inverse wave problem, where the location of the cavity is sought based on measurements of the elastic waves recorded by sensors located at certain points in the domain. The sensor measurements are noisy, and are generated synthetically as a first step. The inverse

Formulation of a new elastoviscoplastic model for time‐dependent behavior of clay Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201231
Yixing Yuan; Andrew J. WhittleThis paper presents a generalized, elastoviscoplastic constitutive model, MIT‐SR, that is capable of describing a wide range of time‐dependent characteristics observed in clays from creep to strain‐rate‐dependent shear behavior. The key component of the proposed model is a novel evolution equation that attributes viscoplastic deformations to a state variable, Ra, referred to as internal strain rate

Noncoaxiality considering inherent anisotropy under various loading paths in a strain space multiple mechanism model for granular materials Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201229
Kyohei Ueda; Susumu IaiInherent anisotropy is a crucial aspect to consider to improve one's understanding of the behavior of granular materials, in particular, noncoaxial responses under proportional and nonproportional loadings. This article investigates the capability of a strain space multiple mechanism model to reproduce complex responses of inherently anisotropic soils under various loading paths. The constitutive model

Calibration and validation of a new elastoviscoplastic soil model Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201227
Yixing Yuan; Andrew J. WhittleThis paper presents the calibration and validation for a new 3D elastoviscoplastic soil model, MIT‐SR, for Resedimented Boston Blue Clay (RBBC). The calibration procedure requires selection of material constants from standard types of laboratory consolidation and undrained shear tests, and a procedure for initialization of state variables. The formulation includes two key input parameters that describe

Probabilistic analysis of overall strength of a cement‐treated soil column considering statistical uncertainty and spatial variability Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201227
Tsutomu NamikawaA finite‐element method (FEM) analysis incorporating with random field theory is a powerful tool to predict the behavior of ground improvement by deep cement mixing with spatial variability. In the analysis, statistical parameters of the strength (i.e., mean, variance, and autocorrelation distance) are normally held constant. However, these parameters involve a statistical uncertainty when evaluated

Micromechanical‐based experimental and analytical studies on rate effects and stick‐slip instability of smooth quartz surfaces in the presence of plastic and non‐plastic gouges Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201227
Sathwik S. Kasyap; Kostas SenetakisWe examined with micromechanical‐based experiments the influence of shearing rate on the tangential contact behavior of smooth (very low surface roughness) flat quartz surfaces with montmorillonite and crushed aggregates as gouges. On decreasing the shearing rate by one order of magnitude, significant changes in the stick‐slip instability were observed; increase in force‐drop, recurrence interval and

One‐dimensional consolidation of layered soils under ramp load based on continuous drainage boundary Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201227
Xiaoyan Yang; Mengfan Zong; Yi Tian; Guosheng Jiang; M. Hesham El Naggar; Wenbing Wu; Meijuan XuThe traditional drainage boundary regards the drainage boundary as completely permeable or completely impervious. However, the drainage boundary is an impeded drainage boundary between completely permeable and impervious in engineering practice. In view of this, a new drainage boundary, namely the continuous drainage boundary, is introduced in this paper to study the consolidation problem of layered

A micro‐macromechanical compression model of crushing in granular materials based on a probabilistic approach and energy aspects Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201227
Tianliang Zheng; Erxiang SongThis paper presents a micro and macromechanical model to estimate the grading evolution and plastic strain caused by particle crushing in the isotropic compression of granular materials. A joint‐probability particle crushing criterion of the maximum contact force and the particle strength is proposed to calculate the incremental particle crushing probability. The dependence of the contact force and

A coupled SPFEM/DEM approach for multiscale modeling of large‐deformation geomechanical problems Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201222
Ning Guo; Zhongxuan Yang; Weihai Yuan; Jidong ZhaoComputational modeling in geotechnical engineering frequently needs sophisticated constitutive models to describe prismatic behavior of geomaterials subjected to complex loading conditions, and meanwhile faces challenges to tackle large deformation in many geotechnical problems. The study presents a multiscale approach to address both challenges based on a hierarchical coupling of the smoothed particle

Prediction and numerical simulation of the face‐slab extrusion damage of Dashixia concrete faced rock‐fill dam Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201222
Sheng Zhu; Zhiyuan Ning; Jing WangOne of the core issues affecting the safety of high concrete faced rock‐fill dams (CFRDs) is the extrusion damage of the concrete face slabs. In this paper, the causes of the face‐slab extrusion damage under long‐term operational conditions are studied. It is found that not only the creep behavior of the dam materials but also the circulating water load in the reservoir is responsible for the uneven

A two‐dimensional analytical model for organic contaminant transport in cutoff wall and aquifer system Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201221
Huaxiang Yan; Haijian Xie; Shaoyi Wang; Zijing ZhengCutoff walls are widely used as in‐situ geoenvironmental barriers to isolate the contaminants caused by landfill leakage, chemical storage tank accidents, and mining activities. A two‐dimensional analytical solution is developed to investigate the behavior of organic chemical transport in cutoff wall and aquifer. The method of Laplace transforms and finite Fourier cosine transform is adopted to derive

Permeability stability calculation model of foam‐conditioned soil based on the permeability constant Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201214
Shuying Wang; Shuo Huang; Jiazheng Zhong; Sheng Zhang; Qinxin Hu; Tongming Qu; Xinyu YeThe low permeability of discharged muck must last for at least tens of minutes to avoid water spewing during earth pressure balance (EPB) shield tunneling; however, foam, which is usually added to soil to reduce its permeability, has its own unique time‐varying characteristics. Thus, it is important to predict the stable time of permeability of foam‐conditioned soil for EPB shield tunneling. Based

Simulation of coupled multiphase flow and geomechanics in porous media with embedded discrete fractures Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201205
Matteo Cusini; Joshua A. White; Nicola Castelletto; Randolph R. SettgastIn fractured natural formations, the equations governing fluid flow and geomechanics are strongly coupled. Hydrodynamical properties depend on the mechanical configuration, and they are therefore difficult to accurately resolve using uncoupled methods. In recent years, significant research has focused on discretization strategies for these coupled systems, particularly in the presence of complicated

A three‐dimensional multiscale damage‐poroelasticity model for fractured porous media Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201205
Mahdad Eghbalian; Mehdi Pouragha; Richard WanThe paper investigates the failure of brittle rocks within a multiscale/multiphysics computational modeling framework so as to explicitly incorporate both microstructural and hydromechanical aspects in their overall (nonlinear) fracture behavior. Herein, the rock is idealized as a microfissured porous medium via a representative elementary volume (REV) containing distributed oblate spheroidal open

Influence of pore‐like flaws on strength and microcracking behavior of crystalline rock Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201204
Jun Peng; Louis Ngai Yuen Wong; Yahui ZhangPore is a common type of microdefect or flaw in rock or rock‐like material. Predicting the influence of pore‐like flaw on the deformation, strength, and failure behavior of a brittle material is a topic of great interest in the field of geomechanics and geotechnical engineering. In this study, the influences of a group of two‐dimensional circular pore‐like flaws with varied number, position, and size

An anisotropic viscoplasticity model for shale based on layered microstructure homogenization Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201203
Jinhyun Choo; Shabnam J. Semnani; Joshua A. WhiteViscoplastic deformation of shale is frequently observed in many subsurface applications. Many studies have suggested that this viscoplastic behavior is anisotropic—specifically, transversely isotropic—and closely linked to the layered composite structure at the microscale. In this work, we develop a two‐scale constitutive model for shale in which anisotropic viscoplastic behavior naturally emerges

Transverse and longitudinal fluid flow modelling in fractured porous media with non‐matching meshes Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200925
Behnam V. Damirchi; Marcelo R. Carvalho; Luís A. G. Bitencourt; Osvaldo L. Manzoli; Daniel Dias‐da‐CostaA new discrete fracture model is introduced to simulate the steady‐state fluid flow in discontinuous porous media. The formulation uses a multi‐layered approach to capture the effect of both longitudinal and transverse permeability of the discontinuities in the pressure distribution. The formulation allows the independent discretisation of mesh and discontinuities, which do not need to conform. Given

An efficient transient‐state algorithm for evaluation of leakage through defective cutoff walls Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200927
Yutao Pan; Michael A. Hicks; Wout BroereArtificial barriers are widely used to prevent leakages. However, due to construction errors during the wall installation, passages with small dimensions may occasionally penetrate through the barrier, undermining its tightness. A three‐dimensional discretized algorithm (TDA) is proposed for quantitatively estimating the transient‐state discharge rate through defective cutoff walls. By discretizing

Demonstration and application of NMM‐based fractured porous medium flow model Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201023
Qi‐Hua Zhang; Shao‐Zhong Lin; Hai‐Dong Su; Gen‐Hua ShiIn natural rock masses, the shapes of three‐dimensional (3‐D) blocks cut by arbitrary fracture networks may be very complex. Owing to the geometric complexity and difficulty of mesh discretization of 3‐D blocks and fracture facets, explicit consideration of fracture networks in flow analysis of fractured porous medium (FPM) is very challenging. Using the numerical manifold method based on independent

Efficient reliability analysis of slopes integrating the random field method and a Gaussian process regression‐based surrogate model Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201121
Bin Zhu; Tetsuya Hiraishi; Huafu Pei; Qing YangEfficient evaluation of slope stability is a frontier in geo‐disaster prevention fields. While many slope stability evaluation methods, ranging from deterministic to probabilistic, have been proposed, reliability methods are particularly advantageous as they can account for uncertainties during slope stability evaluation. To address the problem of the low efficiency of direct Monte Carlo simulations

Min‐max fuzzy goal programming ‐ Taguchi model for multiple additives optimization in expansive soil improvement Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201115
Chijioke Christopher Ikeagwuani; Donald Chimobi Nwonu; Hyginus Nwankwo OnahThis present study optimizes multiadditives for the improvement of the properties of expansive soil by integrating min‐max fuzzy goal programming model, a variant of fuzzy goal programming, into Taguchi optimization method. The multiadditives, which included ordinary Portland cement (OPC), quarry dust (QD), and sawdust ash (SDA), had various levels assigned to them in the Taguchi designed experiment

A diffusion model for backfill grout behind shield tunnel lining Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201115
Xiao‐Xue Liu; Shui‐Long Shen; Ye‐Shuang Xu; Annan ZhouThis paper presents an analytical model to investigate backfill grout diffusion behind tunnel segmental lining, in which the backfill grout is taken as a Bingham fluid. The analytical model of grout diffusion is derived based on force–equilibrium principle, Darcy's law, and the law of momentum conservation of the grout. Time‐dependent grout diffusion pressure and distance are highlighted in the model

Thermo‐poroelasticity under temporal flux in low permeable layer confined with flexible sealing media Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201115
X. Zhai; K. Atefi‐MonfaredAnalytical formulation of nonisothermal injection in geological reservoirs remains challenging, and researchers have adopted a number of simplifying assumptions to theoretically predict the resulting geomechanical alterations. One common assumption behind current thermo‐poroelastic solutions is a constant temperature and constant pore pressure in the reservoir rock adjacent to the source/sink, which

Study on the dynamic response of dip bedded rock slope using discontinuous deformation analysis (DDA) and shaking table tests Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201114
Xixia Feng; Qinghui Jiang; Huichao Zhang; Xiaobo ZhangStability prediction for bedded rock slopes under seismic loading is very important for landslide hazard assessment. To clarify the dynamic behaviors and damage mechanism of dip bedded slope, shaking table tests and its prototype simulation analyses were performed. Shaking table tests were conducted to analysis the acceleration dynamic response firstly and then the discontinuous deformation analysis

Thermo‐hydro‐mechanical modeling of fracturing porous media with two‐phase fluid flow using X‐FEM technique Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201005
A. R. Khoei; S. M. S. MortazaviIn this paper, a fully coupled thermo‐hydro‐mechanical model is presented for two‐phase fluid flow and heat transfer in fractured/fracturing porous media using the extended finite element method. In the fractured porous medium, the traction, heat, and mass transfer between the fracture space and the surrounding media are coupled. The wetting and nonwetting fluid phases are water and gas, which are

A coupled CFD‐DEM investigation of suffusion of gap graded soil: Coupling effect of confining pressure and fines content Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201007
Yajing Liu; Lizhong Wang; Yi Hong; Jidong Zhao; Zhen‐Yu YinSuffusion involves fine particles migration within the matrix of coarse fraction under seepage flow, which usually occurs in the gap‐graded material of dams and levees. Key factors controlling the soil erodibility include confining pressure (p′) and fines content (Fc), of which the coupling effect on suffusion still remains contradictory, as concluded from different studies considering narrow scope

Moving load response of an axially loaded Timoshenko beam on a multilayered transversely isotropic half‐space comprising different media Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201014
Yi‐Cheng Li; Shi‐Jin Feng; Zhang‐Long ChenThis paper investigates the dynamic response of an axially loaded Timoshenko beam coupled with a multilayered transversely isotropic (TI) half‐space subjected to a moving load. An axial force induced by the thermal expansion is taken into account in the Timoshenko beam. The half‐space considers the alternate distribution of an arbitrary number of TI elastic and poroelastic layers to model foundation

Reply to comments on “Explicit versus implicit front advancing schemes for the simulation of hydraulic fracture growth” (Int. J. Numer. Anal. Methods Geomech., 2019, 43 (6), 1300–1315)” by Prof. Linkov Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200911
Haseeb Zia; Brice LecampionWe reply to Prof. Linkov comments on our article entitled “Explicit versus implicit front advancing schemes for the simulation of hydraulic fracture growth” (Int. J. Numer. Anal. Methods Geomech., 2019, 43 (6), 1300–1315). We present additional results indicating that both the implicit and explicit front advancement schemes are robust even in the case of a large stress contrast.

Three‐dimensional anisotropic plasticity model for sand subjected to principal stress value change and axes rotation Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201110
Long Xue; Jia‐Ke Yu; Jin‐Hong Pan; Rui Wang; Jian‐Min ZhangA three‐dimensional (3D) anisotropic plasticity model for sand is formulated in this study to provide a constitutive description for both radial and principal stress axes rotation (PSAR) loading‐induced behavior under various conditions with a single set of model parameters. The model has zero elastic range, with plastic loading and flow direction dependent on both current stress and stress rate direction

Fluid stabilization of the u−w Biot's formulation at large strain Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201110
Pedro Navas; Manuel Pastor; Angel Yagüe; Miguel Martín Stickle; Diego Manzanal; Miguel MolinosDynamic problems of fluid‐saturated soils have to be assessed through a complete formulation where dynamic terms take place. The main dynamic Biot's formulation, the u − w , is employed widely in the literature in order to accurately study the dynamic phenomena. However, depending on the spatial discretization this formulation is utilizing, numerical errors may appear within this approach. The proposed

Anisotropic dual‐continuum representations for multiscale poroelastic materials: Development and numerical modelling Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200907
Mark Ashworth; Florian DosterDual‐continuum (DC) models can be tractable alternatives to explicit approaches for the numerical modelling of multiscale materials with multiphysics behaviours. This work concerns the conceptual and numerical modelling of poroelastically coupled dual‐scale materials such as naturally fractured rock. Apart from a few exceptions, previous poroelastic DC models have assumed isotropy of the constituents

Characterization and constitutive modeling of red clay contaminated with ammonium carbonate Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201007
Shanmei Li; Beshoy Riad; Xiong Zhang; Zhikui LiuConventionally, red clay is used for agricultural purposes in southern China. Fertilizers, especially urea, are commonly introduced into the red clay to improve the crop yields. However, due to the rapid urbanization in China, large areas of lands with red clays have been converted into sites for domestic and industrial constructions. Nevertheless, few researchers focused on the effect of urea on the

A multisurface kinematic hardening model for the behavior of clays under combined static and undrained cyclic loading Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200928
Andreas Stoecklin; Balz Friedli; Alexander M. PuzrinIn dynamic geotechnical problems, soils are often subjected to a combination of sustained static and fast cyclic loading. Under such loading conditions, saturated and normally consolidated clays generally experience a build‐up of excess pore water pressure along with a degradation of stiffness and strength. If the strength of the soil falls below the static stress demand, a self‐driven failure is triggered

Numerical upper bounds to the ultimate load bearing capacity of three‐dimensional reinforced concrete structures Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201007
H. Vincent; M. Arquier; J. Bleyer; P. de BuhanThis contribution is addressing the ultimate limit state design of massive three‐dimensional reinforced concrete structures based on a finite‐element implementation of yield design theory. The strength properties of plain concrete are modeled either by means of a tension cutoff Mohr Coulomb or a Rankine condition, while the contribution of the reinforcing bars is taken into account by means of a homogenization

Response to the paper by H. Zia, B. Lecampion “Explicit versus implicit front advancing schemes for the simulation of hydraulic fracture growth” (Int. J. Numer. Anal. Methods Geomech., 2019, 43 (6), 1300–1315) Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200911
Aleksandr LinkovThe response presents three comments, which (i) explain theoretical background for the success of the explicit front advancing scheme by Zia and Lecampion (comment 1), (ii) suggest possible extensions (comment 2), and (iii) pay attention on expected limitations of the scheme to be checked by the authors in numerical experiments (comment 3). The response does not intend to present novel results: it

Horizontal vibration of a rigid strip footing on viscoelastic half‐space Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20201015
Changjie Zheng; Yuanjie Cai; Lubao Luan; George Kouretzis; Xuanming DingThis paper presented an analytical method for determining the response of a rigid strip foundation resting on the surface of a viscoelastic half‐space to horizontal dynamic loads, and the associated transient soil displacements resulting from the vibration of the footing. This mixed boundary value problem was solved by means of Jacobi orthogonal polynomials, a more efficient method compared to transforming

Transport analysis in deformable porous media through integral transforms Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200927
Alessandra Bonazzi; Birendra Jha; Felipe P. J. de BarrosGeomechanical deformation can alter the flow field that impacts solute mass fluxes. Despite its importance, the effects of the coupling between geomechanical deformation and the flow field on solute transport behavior are not fully known. In this paper, we study the impact of this coupling on the solute concentration distribution. The concentration field is semianalytically derived by making use of

Hydromechanical couplings of reinforced tensioned members of steel fiber reinforced concrete by dual lattice model Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200928
Duc Tho Pham; Luca Sorelli; Mario Fafard; Minh‐Ngoc VuThe durability of concrete structures strongly depends on the water and chloride penetration in cracked concrete during its service life. This work aims at modeling the damage effect of tension stiffening behavior on the permeability for concrete tie specimen under tensile load by a dual lattice model, which considers hydromechanical couplings. Three concrete materials, including normal strength concrete

Issue Information Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200907
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Issue Information Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200904
No abstract is available for this article.

Dynamic stochastic finite element method using time‐dependent generalized polynomial chaos Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200820
Maxime Lacour; Guillaume Bal; Norman AbrahamsonWe present an intrusive formulation for the dynamic stochastic finite‐element method to propagate the epistemic uncertainty in material properties into a finite‐element system over time. The stochastic finite‐element method, originally developed for the static case, uses generalized polynomial chaos (gPC) expansions to represent the uncertainty in both material/load fields and displacement fields and

The influence of coupled physical swelling and chemical reactions on deformable geomaterials Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200820
Yue Ma; Xiao‐Hui Chen; Lee J. Hosking; Hai‐Sui Yu; Hywel R. Thomas; Simon NorrisCoupled thermo‐hydro‐mechanical‐chemical modelling has attracted attention in past decades due to many contemporary geotechnical engineering applications (e.g., waste disposal, carbon capture and storage). However, molecular‐scale interactions within geomaterials (e.g., swelling and dissolution/precipitation) have a significant influence on the mechanical behaviour, yet are rarely incorporated into

Mechanical‐probabilistic formulation of the soil–structure interaction, accounting for the average shear wave velocity Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200819
Riadh Attal; Stéphane Grange; Julien Baroth; Abdelnasser DahmaniThis work proposes a mechanical‐probabilistic formulation of the soil–structure interaction, taking into account the variability of the mean velocity of shear wave seismic load. This work aims at studying the sensitivity of the seismic response of a reinforced concrete frame structure by accounting for different seismic scenarios. For this purpose, the simplified model of a two‐story structure system

Embedded discontinuity approach for coupled hydromechanical analysis of fractured porous media Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200818
A. A. Jameei, S. PietruszczakIn this paper, a new continuum approach for the coupled hydromechanical analysis of fractured porous media is proposed. The methodology for describing the hydraulic characteristics invokes an enriched form of Darcy's law formulated in the presence of an embedded discontinuity. The constitutive relations governing the hydromechanical response are derived by averaging the fluid pressure gradient and

The influence of the void fraction on the particle migration: A coupled computational fluid dynamics–discrete element method study about drag force correlations Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200815
Manuela Kanitz; Juergen GrabeGranular soils subjected to flow through their soil skeleton can show a behaviour in which fine particles migrate through the pore space between coarser particles. This process is called internal instability or suffusion. This contribution deals with the numerical analysis of the migration of fine particles in a soil column subjected to fluid flow with unresolved coupled computational fluid dynamics–discrete

A simple hypoplastic model with loading surface accounting for viscous and fabric effects of clays Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200811
Merita Tafili; Theodoros TriantafyllidisThis paper presents a simple hypoplastic model capturing mostly all salient features of clays: rate dependency, time dependency and inherent and induced anisotropy without being restricted to only viscoplastic clays. Therefore, due to the strain rate decomposition into three parts, nonviscous clays, that is, rate‐independent clays, can also be simulated. The incorporation of a loading surface allows

Micromechanical modeling for rate‐dependent behavior of salt rock under cyclic loading Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200807
Xianda Shen; Jihui Ding; Chloé Arson; Judith S. Chester; Frederick M. ChesterThe dependence of rock behavior on the deformation rate is still not well understood. In salt rock, the fundamental mechanisms that drive the accumulation of irreversible deformation, the reduction of stiffness, and the development of hysteresis during cyclic loading are usually attributed to intracrystalline plasticity and diffusion. We hypothesize that at low pressure and low temperature, the rate‐dependent

Formulation of reference solutions for compaction process in sedimentary basins Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200807
Paulo Sérgio B. Lemos; André Brüch; Samir MaghousThis paper is devoted to the development of semianalytical solutions for the deformation induced by gravitational compaction in sedimentary basins. Formulated within the framework of coupled plasticity–viscoplasticity at large strains, the modeling dedicates special emphasis to the effects of material densification associated with large irreversible porosity changes on the stiffness and hardening of

A contact problem for a poroelastic halfspace containing an embedded inextensible membrane Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200807
P. Samea; A.P.S. SelvaduraiThe paper examines the axisymmetric problem of the indentation of a poroelastic halfspace that is reinforced with an inextensible permeable/impermeable membrane located at a finite depth by a rigid indenter. The constitutive behavior of the poroelastic halfspace is described by the three‐dimensional theory of poroelasticity proposed by M.A. Biot. The contact conditions between the indenter and the

Modeling of progressive damage in concrete using multidimensional virtual internal bond method Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200807
Sudhindra N. Jalwadi; Tanmay K. BhandakkarDamage simulation via tensile and shear failure modes in quasi‐brittle material like concrete is computationally challenging. Multidimensional virtual internal bond (MVIB) method is one of the promising method developed to capture shear failure in materials like concrete. It assumes continuum as an assemblage of material points joined by normal and shear bonds possessing harmonic potential and bond

Issue Information Int. J. Numer. Anal. Methods Geomech. (IF 2.814) Pub Date : 20200806
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