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A crystal plasticity based finite element framework for RVE calculations of two-phase materials: Void nucleation in dual-phase steels Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2021-01-15 Tuncay Yalçinkaya; Serhat Onur Çakmak; Cihan Tekoğlu
A crystal plasticity based finite element (CPFE) framework is developed for performing representative volume element (RVE) calculations on two-phase materials. The present paper investigates the mechanical response and the evolution of microstructure of dual-phase (DP) steels under uniaxial tensile loading, with a special focus on void nucleation. The spatial distribution and morphology of the ferrite
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Dynamic behavior of polyurea composites subjected to high strain rate loading Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-12-29 W. Akl; M. Ali; O. Aldraihem; A. Baz
A comprehensive theoretical and experimental investigation is presented of the behavior of polyurea composites subjected to high strain-rate impact loading. The composites under consideration consist of an assembly of steel sections and inserts manufactured from layers of polyurea or polyurea augmented with aluminum layers (AL). A finite element model (FEM) is developed to predict the dynamics of this
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Refinement strategies for polygonal meshes applied to adaptive VEM discretization Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-12-18 Stefano Berrone; Andrea Borio; Alessandro D'Auria
In the discretization of differential problems on complex geometrical domains, discretization methods based on polygonal and polyhedral elements are powerful tools. Adaptive mesh refinement for such kind of problems is very useful as well and states new issues, here tackled, concerning good quality mesh elements and reliability of the simulations. In this paper we propose several new polygonal refinement
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HERK integration of finite-strain fully anisotropic plasticity models Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-12-15 P. Areias; T. Rabczuk; J. Ambrósio
For finite strain plasticity, we use the multiplicative decomposition of the deformation gradient to obtain a differential-algebraic system (DAE) in the semi-explicit form and solve it by a half-explicit algorithm. The terminology HERK is synonym of Half-Explicit Runge-Kutta method for DAE. The source is here the right Cauchy-Green tensor and an exact Jacobian of the second Piola-Kirchhoff stress is
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Robust fluid–structure interaction analysis for parametric study of flapping motion Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-12-09 Giwon Hong; Shigeki Kaneko; Naoto Mitsume; Tomonori Yamada; Shinobu Yoshimura
A flapping motion is an important fluid–structure interaction (FSI) phenomenon. Although it has been extensively studied, there are still many unknowns. Because there are numerous parameters in the kinematics and morphology for flapping motions, it is difficult to experimentally determine parameter values that enhance flapping aerodynamics because of the associated time, cost, and space constraints
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Effect of strain and deformation mode on cube texture formation in warm bi-axial rolled low-carbon steel Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-12-04 Tadanobu Inoue; Rintaro Ueji
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A semi-analytical interval method for response bounds analysis of structures with spatially uncertain loads Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-11-09 B.Y. Ni; P.G. Wu; J.Y. Li; C. Jiang
This paper proposes a semi-analytical interval method for static response bounds analysis of structures subjected to spatially uncertain loads. In the investigated problem, the external loads applied to the structure are spatially uncertain but bounded, which are quantified by an interval field model using upper and lower bounds. By introducing the interval field and its series expansion form into
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A stability-enhanced peridynamic element to couple non-ordinary state-based peridynamics with finite element method for fracture analysis Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-10-22 Yijia Dong; Chao Su; Pizhong Qiao
The non-ordinary state-based peridynamics (NSPD) is a promising method for fracture analysis, and it can incorporate the constitutive relationship of classical continuum mechanics in peridynamics. However, the high computational cost is one of the main reasons limiting its usage. To improve computational efficiency of NSPD, a stability-enhanced peridynamic (PD) element is proposed to couple NSPD with
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Development of an ABAQUS™ plug-in to evaluate the fourth-order elasticity tensor of a periodic material via homogenization by the asymptotic expansion method Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-10-26 Bruno Guilherme Christoff; Humberto Brito-Santana; Ramesh Talreja; Volnei Tita
This paper presents the development of an ABAQUS™ plug-in for estimation of the effective properties of heterogeneous three-dimensional periodic media using the asymptotic homogenization method (AHM). The developed plug-in is user-friendly and requires only basic skills in ABAQUS™. All aspects of the plug-in development are presented, including the solutions found to implement this approach within
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Natural element approximation of hierarchical models of plate-like elastic structures Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-09-18 J.R. Cho
Almost all the mesh-free methods are restricted to 2-D problems owing to the difficulty in generating 3-D grids. One effective way to overcome this limitation is to utilize the concept of hierarchical modeling for elastic structures. It was introduced originally for the dimensionally-reduced analysis of 3-D structures, but it can be used for the reverse purpose. By assuming the displacement field in
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On the dynamic response of reinforced concrete beams subjected to drop weight impact Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-09-19 Joosef Leppänen; Morgan Johansson; Peter Grassl
To improve the impact resistance of reinforced concrete structures, a detailed understanding of the dynamic response is required. This study investigates this impact resistance using experiments in combination with 3D non-linear finite element (FE) simulations. The experiments made use of high-speed photography and digital image correlation (DIC), while a damage-plasticity constitutive model for concrete
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Conductive-radiative heat transfer within SiC-based cellular ceramics at high-temperatures: A discrete-scale finite element analysis Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-09-15 M.A. Badri, Y. Favennec, P. Jolivet, B. Rousseau
Cellular ceramic materials possess many favorable properties that allow to develop efficient modern-day high-temperature thermal energy conversion systems and processes. The energy conversion within these porous media is governed by tightly coupled conduction–radiation physics. To efficiently design and optimize these systems, a comprehensive understanding of the conduction–radiation behavior within
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Inverse finite element analysis using a simple reduced integration hexahedral solid-shell element Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-09-11 Victor D. Fachinotti, Alejandro E. Albanesi, Fernando G. Flores
This paper introduces the inverse finite element method using simple brick elements that can be used for shell analysis. The proposed element is the inverse counterpart of an existing Lagrangean-based “direct” trilinear hexahedral finite element that uses the approaches of reduced integration, assumed natural strains and enhanced assumed strain to prevent locking defects in shell modeling. Like the
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Wave finite element method for waveguides and periodic structures subjected to arbitrary loads Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-09-10 Tien Hoang, Denis Duhamel, Gilles Foret
The wave finite element method has been developed for waveguides and periodic structures with advantages in the calculation time. However, this method cannot be applied easily if the structure is subjected to complex or density loads and this is the aim of this article. Based on the finite element method, the dynamic equation of one period of the structure is rewritten to obtain a relation between
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Remapping-free variational h-adaption for strongly coupled thermo-mechanical problems Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-09-02 Rohit Pethe, Thomas Heuzé, Laurent Stainier
A mesh adaption approach for strongly coupled problems is proposed, based on a variational principle. The adaption technique relies on optimality properties of an energy-like potential and is hence free from error estimates and the associated computational cost. According to the saddle point nature of this variational principle, a staggered solution approach appears more natural and leads to separate
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Multi-fidelity bayesian optimization using model-order reduction for viscoplastic structures Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-08-22 Stéphane Nachar, Pierre-Alain Boucard, David Néron, Christian Rey
One of the main issues when dealing with the numerical optimization of mechanical structures is the balance between computation time and model accuracy. The work presented herein aims at accelerating global optimization by using the framework of Bayesian optimization on a quantity of interest together with multiple levels of fidelity. These multi-fidelity data are generated from a model-order reduction
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A painless automatic hp-adaptive strategy for elliptic problems Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-08-04 Vincent Darrigrand, David Pardo, Théophile Chaumont-Frelet, Ignacio Gómez-Revuelto, Luis Emilio Garcia-Castillo
In this work, we introduce a novel hp-adaptive strategy. The main goal is to minimize the complexity and implementational efforts hence increasing the robustness of the algorithm while keeping close to optimal numerical results. We employ a multi-level hierarchical data structure imposing Dirichlet nodes to manage the so-called hanging nodes. The hp-adaptive strategy is based on performing quasi-optimal
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A strongly objective, robust integration algorithm for Eulerian evolution equations modeling general anisotropic elastic-inelastic material response Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-07-03 Martin Kroon, M.B. Rubin
A background to the constitutive modeling of elastic-inelastic material response is provided to highlight the uniqueness of the Eulerian formulation of general nonlinear fully anisotropic thermoelastic-inelastic materials proposed in Rubin (1994) [1]. This model introduced Eulerian evolution equations for a triad of microstructural vectors that characterize elastic deformations and anisotropic orientations
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Reduced modelling computation of layered soil's harmonic green functions Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-07-03 Ramzi Othman, Amine Ammar, Khalid H. Almitani
Ground-borne vibrations are disturbing to human beings. In order to model and reduce these vibrations, the calculation of the harmonic Green's-functions of the soil is highly required since the most effective numerical solution to predict ground-borne vibration is to couple the finite-element and the boundary-element methods. In this work, we elaborate a direct space-frequency formulation that is especially
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Fluid-structure interaction: Extended-FEM approach to solidification Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-07-01 Daniela Caraeni, Vincent Casseau, Wagdi G. Habashi
The extended finite element method (XFEM) and the level set method (LSM) are applied to simulate the solidification phenomenon and the behavior of the liquid-solid phase transition. The temperature-based energy equation is loosely-coupled with the incompressible Navier-Stokes (INS) equations and solved by XFEM using the Stefan condition to express the energy conservation law for phase change. The INS
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Optimization of an internal blade cooling passage configuration using a Chimera approach and parallel computing Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-06-26 Bruno Storti, Luciano Garelli, Mario Storti, Jorge D'Elía
Improving gas turbine performance depends almost exclusively on the maximum temperature of the combustion gases. This temperature is limited by the thermomechanical strength of the turbine vanes. In this work, a Chimera approach for overlapping grids in the finite element method (FEM) context is proposed to optimize the arrangement of several cooling passages within the vane to minimize its average
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Cracking elements method with 6-node triangular element Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-06-23 Linlong Mu, Yiming Zhang
The cracking elements method (CEM) is a novel Galerkin-based numerical approach for simulating cracking and fracturing processes. It is a crack-opening approach that avoids precise descriptions of the mechanical states of crack tips and captures the initiations and propagations of multiple cracks without nodal enrichment or crack tracking. The CEM requires element types with nonlinear interpolation
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An adaptive curved virtual element method for the statistical homogenization of random fibre-reinforced composites Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-06-19 E. Artioli, L. Beirão da Veiga, M. Verani
We propose an adaptive curved virtual element method (ACVEM) which is able to combine an exact representation of the involved computational geometry and a dynamic tuning of the optimal mesh resolution through a robust and efficient residual-based a-posteriori error estimator. A theoretical analysis on the reliability of the estimator and a gallery of numerical tests supports the efficacy of the proposed
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Numerical prediction of effective properties for heterogeneous viscoelastic materials via a temporally recursive adaptive quadtree SBFEM Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-06-18 Yiqian He, Jin Guo, Haitian Yang, Qiang Fu
A new numerical method is presented for evaluating the effective properties of heterogeneous viscoelastic materials, and an efficient and high-fidelity Direct Numerical Simulation (DNS) is addressed by integrating the advantages of the quadtree Scaled Boundary Finite Element Method (SBFEM) and a temporally recursive adaptive algorithm. The quadtree technique that can be directly implemented with input
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How to efficiently apply soft thin coating to existing Finite Element contact model Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-06-15 T. Tiirats, N. Chevaugeon, N. Moës, C. Stolz, N. Marouf, E. Desdoit
In case of very thin surface coatings, the coating layer is often ignored in a large-scale Finite Element Analysis. This is mainly due to extensive numerical cost required to capture the correct mechanical behaviour of the layer, especially if the coating is significantly softer than the substrate. To overcome the excessive computational cost, due to the full discretization of the thin layer, in large-scale
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Fracture analysis in directed energy deposition (DED) manufactured 316L stainless steel using a phase-field approach Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-06-10 Erfan Azinpour, Roya Darabi, Jose Cesar de Sa, Abel Santos, Josef Hodek, Jan Dzugan
Experimental and numerical study regarding fracture in laser-processed steel components is addressed in the present work. Samples of stainless steel (SS) 316L were obtained by an additive manufacturing process, the directed energy deposition (DED), using different deposition orientations, and tested experimentally until fracture. Microstructural investigations, prior and after fracture, were performed
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A strongly objective expression for the average deformation rate with application to numerical integration algorithms Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-05-21 M.B. Rubin
Although the Hughes-Winget rotation tensor is not strongly objective when stretching occurs during a time step it is very accurate when the incremental stretching during the time step is small, a condition that is almost always met in practice. Two types of evolution equations based on the Jaumann derivative are examined which show that the main source of error in the numerical algorithms is due to
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Explicit dynamic approach for unbounded domains in frictional contact with Rate and State laws Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-05-01 M. Brun, R. Rezakhani, J.-F. Molinari
The paper explores the ability of an explicit time integration procedure to simulate the dynamics of shear rupture between unbounded elastic blocks on frictional interface, modeled with the finite element method. The behaviour of the interface is governed by Rate and State (RS) friction laws, proposed to describe the rate dependent phenomena observed in experiments on rocks and many other materials
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A finite strain mixed J2 − u − p low-order tetrahedron Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-04-15 P. Areias
With the goal of improving upon the accuracy of D. Arnold's MINI element for finite strain plasticity, and more precisely calculate the elastic/plastic interface, we extend this element formulation to include, as nodal degrees-of-freedom, a function of the second invariant of the deviatoric stress, J2. A finite-strain J2 − u − p mixed formulation of the classical low-order tetrahedron element is introduced
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Elasto-plastic large deformation analysis of multi-patch thin shells by isogeometric approach Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-03-23 G.D. Huynh, X. Zhuang, H.G. Bui, G. Meschke, H. Nguyen-Xuan
This paper studies elasto-plastic large deformation behaviour of thin shell structures using the isogeometric computational approach with the main focus on the efficiency in modelling the multi-patches and arbitrary material formulation. In terms of modelling, we employ the bending strip method to connect the patches in the structure. The incorporation of bending strips allows to eliminate the strict
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DKMQ24 shell element with improved membrane behaviour Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-03-20 Vítězslav Štembera, Josef Füssl
An approach to improve the membrane behaviour of the four-node shell element with 24 degrees of freedom DKMQ24 proposed by Katili et al. (2015) is presented. This improvement is based on a different approximation of drilling rotations, based on Allman's shape functions. Further, the element formulation is enhanced by the use of selective reduced integration of shear terms and by the proportional scaling
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Finite element simulation of restrained shrinkage cracking of cementitious materials: Considering moisture diffusion, aging viscoelasticity, aleatory uncertainty, and the effects of soft/stiff inclusions Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-03-18 Naman Saklani, Zhenhua Wei, Alain Giorla, Benjamin Spencer, Subramaniam Rajan, Gaurav Sant, Narayanan Neithalath
Simulation of restrained ring shrinkage and cracking of cementitious materials in a multiphysics simulation framework (MOOSE) is discussed in this paper. The 3D numerical model analyzes residual stress development and crack initiation/propagation in cement pastes by applying an eigenstrain which varies over the depth of the specimen based on the relative humidity of the pores as moisture diffuses from
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Stochastic approaches to generating diverse and competitive structural designs in topology optimization Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-03-10 Yunzhen He, Kun Cai, Zi-Long Zhao, Yi Min Xie
Topology optimization techniques have been widely used in structural design. Conventional optimization techniques usually are aimed at achieving the globally optimal solution which maximizes the structural performance. In practical applications, however, designers usually desire to have multiple design options, as the single optimal design often limits their artistic intuitions and sometimes violates
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Structural-scale modeling of the active confinement effect in the steel-concrete bond for reinforced concrete structures Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-02-15 C. Turgut, L. Jason, L. Davenne
A numerical model to take into account the effect of the stress state on the bond behavior between steel and concrete in reinforced concrete structures is proposed. It is based on a zero thickness element, adapted to large-scale simulations and the use of 1D elements for steel bars. The proposed model also assumes the definition of a bond stress – slip law which includes the confining pressure around
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Sum factorization for fast integration of DPG matrices on prismatic elements Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-02-12 Jacob Badger, Stefan Henneking, Leszek Demkowicz
Higher order finite element (FE) methods provide significant advantages in a number of applications such as wave propagation, where high order shape functions help to mitigate pollution (dispersion) error. However, classical assembly of higher order systems is computationally burdensome, requiring the evaluation of many point quadrature schemes. When the Discontinuous Petrov-Galerkin (DPG) FE methodology
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A MINI element over star convex polytopes Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-01-29 Amrita Francis, Alejandro Ortiz-Bernardin, Stéphane PA. Bordas, Sundararajan Natarajan
In this paper, we extend the concept of MINI element over triangles to star convex arbitrary polytopes. This is achieved by employing the volume averaged nodal projection (VANP) method over polytopes in combination with the strain smoothing technique. Within this framework, the dilatation strain is projected onto the linear approximation space, thus resulting in a purely displacement based formulation
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A novel data-driven nonlinear solver for solid mechanics using time series forecasting Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-01-08 Tan N. Nguyen, H. Nguyen-Xuan, Jaehong Lee
In this paper, a novel data-driven nonlinear solver (DDNS) for solid mechanics using time series forecasting is first proposed. The key concept behind this work is to modify the starting point of iterations of the modified Riks method (M-R). The modified Riks method starts iterations at the previously converged solution point while the proposed method starts at a predicted point which is very close
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The robust fail-safe topological designs based on the von Mises stress Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2020-01-06 Hongxin Wang, Jie Liu, Guilin Wen, Yi Min Xie
For large-scale equipment, e.g. aerospace and architecture industry, it is valuable to guarantee that one structure could survive partial damages. Due to the location of the damage is unknown in prior, results in a high number of failure scenarios to be calculated when considering fail-safe requirement in topology optimization. In this article, we propose an efficient continuum topology optimization
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Towards asphalt concrete modeling by the multiscale finite element method Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-12-28 Marek Klimczak, Witold Cecot
Reliable numerical modeling of asphalt concrete (AC) is a complex problem due to a non periodic random structure of this material and a nonlinear behavior of its interacting constituents. Phenomena observed at the lower resolution highly influence the overall response of pavement layers made of asphalt concrete. In this paper, we focus on the selected aspects of its efficient numerical modeling using
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New elements with harmonic shape functions in adaptive mesh refinement Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-12-06 Mohammad Javad Kazemzadeh-Parsi
New elements are proposed in the present work based on the harmonic coordinates in which the shape functions satisfy the Laplace equation. The harmonic functions have some appealing characteristics that made it possible to define elements with arbitrary shape functions on the element boundaries and arbitrary node arrangement. In the present work, without loss of generality, we formulate a set of quadrilateral
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Modelling of structures made of filiform beams: Development of a curved finite element for wires Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-22 Emanuele Marotta, Lorenzo Massimi, Pietro Salvini
This paper presents a finite element formulation of curved thin beams, useful for modelling structures made of filiform elements. The proposed element is intended to model structures formed by several wires, subjected to very large bending displacements so that their final shapes can be completely different from the original ones. The model is based on the description of the planar wire geometry through
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On the crack opening and energy dissipation in a continuum based disconnected crack model Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-20 Yiming Zhang, Zhiran Gao, Yanyan Li, Xiaoying Zhuang
All crack models developed to date can be classified into discrete- and continuum-based approaches. While discrete models are advantageously capable of capturing the kinetics of fractures, continuum-based approaches still pique considerable interest due to their straightforward implementation within the finite element method (FEM) framework. The cracking element method (CEM), a recently developed numerical
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Anisotropic boundary layer mesh generation for reliable 3D unsteady RANS simulations Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-20 G. Guiza, A. Larcher, A. Goetz, L. Billon, P. Meliga, E. Hachem
This paper proposes a Computational Fluid Dynamics (CFD) framework with the aim of combining consistency and efficiency for the numerical simulation of high Reynolds number flows encountered in engineering applications for aerodynamics. The novelty of the framework is the combination of a Reynolds-Averaged Navier–Stokes (RANS) model with an anisotropic mesh adaptation strategy handling arbitrary immersed
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A total Lagrangian position-based finite element formulation for free-surface incompressible flows Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-13 Giovane Avancini, Rodolfo A.K. Sanches
In this work, we propose a position-based finite element formulation for incompressible Newtonian flows under total Lagrangian description. Such formulation is different from the traditional finite element approach used in fluid dynamics by using current nodal positions as main variable instead of nodal velocities. The variational form of the governing equations is derived by applying the stationary
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Does the classical solid-shell element with the assumed natural strain method satisfy the three-dimensional patch test for arbitrary geometry? Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-12 Dana Bishara, Mahmood Jabareen
In the present study, the ability of the classical solid-shell element to satisfy the membrane patch test is examined. Theoretical and numerical investigations showed that the classical solid-shell element fails to satisfy the membrane patch test when the elements' referential covariant base vectors in the thickness directions are coordinate-dependent. This deficiency has motivated the development
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A novel numerical method to predict the transient track geometry and thermomechanical effects through in-situ modification of the process parameters in Direct Energy Deposition Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-08 T.R. Walker, C.J. Bennett, T.L. Lee, A.T. Clare
Direct Energy Deposition (DED) is being widely used to repair damaged components to increase service life and economical operation. Process parameters including laser power, traverse speed and the mass flowrate of the feedstock material may be adapted in-situ. This allows bespoke repair strategies to be devised to match the variability in the condition of the parts supplied that require repair; however
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Computation of absorbing boundary conditions at the discrete level for acoustic waves in the frequency domain Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-06 Denis Duhamel
The calculation of wave radiation in exterior domains by finite element methods can lead to large computations even if we consider linear problems in the frequency domain as in this article. Here, we study two-dimensional acoustics described by the Helmholtz equation. A large part of the exterior domain is meshed and this computational domain is truncated at some distance where local or global boundary
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Discussion on “A linear complete extended finite element method for dynamic fracture simulation with non-nodal enrichments” [Finite Elem. Anal. Des. 152 (2018)] by I. Asareh, T.-Y. Kim, and J.-H. Song Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-06 Alejandro M. Aragón, Angelo Simone
The subject paper purportedly proposes a novel enriched finite element method for modeling problems with strong discontinuities such as those encountered in fracture mechanics. The purpose of this document is to demonstrate that the method in the subject paper (Non-nodal eXtended Finite Element Method, NXFEM) is conceptually identical to the Discontinuity-Enriched Finite Element Method (DE-FEM) [Int
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Predicting vibroacoustic performance of thin-walled lightweight structures during conceptual design Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-01 Peter Persson, Ola Flodén, Björn Pedersen
To predict the vibroacoustic performance of complex thin-walled structures, an analysis using a finite element model considering structure–acoustic interaction is often required. The acoustic response of such models can be time-consuming to compute and sensitive to minor design changes. These models can be too computationally intense since fast design optimizations must be performed. Moreover, knowledge
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Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-11-01 Eric Neiva, Michele Chiumenti, Miguel Cervera, Emilio Salsi, Gabriele Piscopo, Santiago Badia, Alberto F. Martín, Zhuoer Chen, Caroline Lee, Christopher Davies
Among metal additive manufacturing technologies, powder-bed fusion features very thin layers and rapid solidification rates, leading to long build jobs and a highly localized process. Many efforts are being devoted to accelerate simulation times for practical industrial applications. The new approach suggested here, the virtual domain approximation, is a physics-based rationale for spatial reduction
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Numerical implementation of the coupled criterion: Matched asymptotic and full finite element approaches Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-10-25 Aurélien Doitrand, Eric Martin, Dominique Leguillon
An implementation of the coupled criterion (CC) for crack initiation simulation in the commercial finite element (FE) code Abaqus/Standard is proposed. This finite fracture mechanics approach allows crack initiation to be modeled by fulfilling simultaneously a stress and an energy conditions, which results in the determination of the loading level and crack length at initiation. Two procedures are
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An enhanced finite element model for reinforced concrete members under torsion with consistent material parameters Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-10-08 Tuan-Anh Nguyen, Quang-Huy Nguyen, Hugues Somja
This paper deals with the development of a non-linear finite element model for reinforced concrete members under torsion. Using multi-fiber approach and displacement-based formulation, an enhanced multi-fiber 3D beam is proposed for predicting the behavior of reinforced concrete elements under torsion. The sectional analysis under elastic torsion is considered following Saint-Venant torsional theory
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Finite Element solution of the fiber/matrix interface crack problem: Convergence properties and mode mixity of the Virtual Crack Closure Technique Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-10-04 Luca Di Stasio, Zoubir Ayadi
The bi-material interface arc crack has been the focus of interest in the composite community, where it is usually referred to as the fiber-matrix interface crack. In this work, we investigate the convergence properties of the Virtual Crack Closure Technique (VCCT) when applied to the evaluation of the Mode I, Mode II and total Energy Release Rate of the fiber-matrix interface crack in the context
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On the energy-sampling stabilization of Nodally Integrated Continuum Elements for dynamic analyses Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-09-18 R. Sivapuram, P. Krysl
Nodally integrated elements exhibit spurious modes in dynamic analyses (such as in modal analysis). Previously published methods involved a heuristic stabilization factor, which may not work for a large range of problems, and a uniform amount of stabilization was used over all the finite elements in the mesh. The method proposed here makes use of energy-sampling stabilization. The stabilization factor
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An improved Padé approximant in the ANM algorithm: Application to the post-buckling of shells Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-09-18 Rachida Ayane, Abdellah Hamdaoui, Bouazza Braikat, Noureddine Tounsi, Noureddine Damil
In this paper and in the framework of the Asymptotic Numerical Method (ANM), we investigate numerically improved vectorial Padé Approximants. The ANM is a branch-by-branch continuation algorithm, each branch is represented by a vectorial Taylor series with respect to a path parameter. In the ANM, the vectorial Padé approximants have been introduced to increase the validity range of vectorial Taylor
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A novel hybrid shell element formulation (QUAD+ and TRIA+): A benchmarking and comparative study Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-09-17 Pasquale Franciosa, Arnab Palit, Salvatore Gerbino, Darek Ceglarek
This paper introduces a novel hybrid finite element (FE) formulation of shell element to enable assembly process simulation of compliant sheet-metal parts with higher efficiency and flexibility. Efficiency was achieved by developing both new hybrid quadrilateral and triangular elements. Quadrilateral element (QUAD+) was formulated by combining area geometric quadrilateral 6 (AGQ6) nodes and mixed interpolated
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A simple and robust Coulomb frictional algorithm based on 3 additional degrees-of-freedom and smoothing Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-09-16 P. Areias, A. Pinto da Costa, T. Rabczuk, J. César de Sá
Physical accuracy of discretization methods for frictional contact mechanics originates from precise representation of discontinuous frictional and normal interaction laws, appropriate time-integration for velocity and acceleration (which is unbounded at impacting points) and also contact discretization techniques. In terms of discontinuous behavior in the presence of inertia, two themes are of concern:
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A high-performance multiscale space-time approach to high cycle fatigue simulation based on hybrid CPU/GPU computing Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-08-28 Rui Zhang, Sam Naboulsi, Thomas Eason, Dong Qian
A multiscale space/time computational framework for high cycle fatigue (HCF) life predictions is established by integrating the extended space-time finite element method (XTFEM) with a multiscale progressive damage model. While the robustness of the multiscale space/time method has been previously demonstrated, the associated high computational cost remains a critical barrier for practical applications
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A sequential non-iterative approach for modeling multi-ionic species reactive transport during localized corrosion Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-08-23 Xiangming Sun, Ravindra Duddu
Multi-ionic reactive transport modeling can provide a better understanding of localized corrosion in iron and steel alloys. However, one-step numerical methods used to solve reactive transport equations in a fully-coupled manner may suffer from poor conditioning and numerical convergences issues. In this paper, a sequential non-iterative approach (SNIA) is developed to enable robust numerical simulation
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Inverse design based on nonlinear thermoelastic material models applied to injection molding Finite Elem. Anal. Des. (IF 2.949) Pub Date : 2019-08-21 Florian Zwicke, Stefanie Elgeti
This paper describes an inverse shape design method for thermoelastic bodies. With a known equilibrium shape as input, the focus of this paper is the determination of the corresponding initial shape of a body undergoing thermal expansion or contraction, as well as nonlinear elastic deformations. A distinguishing feature of the described method lies in its capability to approximately prescribe an initial
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