Showing papers in "Finite Elements in Analysis and Design in 2015"

TL;DR: In this article, a new shear wall element model and associated material constitutive models based on the open source finite element (FE) code OpenSees are developed to perform nonlinear seismic analyses of high-rise RC frame-core tube structures.

TL;DR: In this article, the effects of multi-cell configurations and oblique loads on the crashworthiness performance have been under studied and it is found that for the same cell number, the number of corners plays a significant role in enhancing energy absorption.

TL;DR: In this paper, a novel approach based on isogeometric analysis (IGA) and a simple first-order shear deformation plate theory (S-FSDT) is presented for geometrically nonlinear analysis of homogeneous and non-homogeneous functionally graded plates.

TL;DR: In this paper, an effective calibration method to determine the material parameters for this model as functions of uniaxial compression strength and the maximum aggregate size of concrete according to formulas from CEB-FIP code and concrete test data from other published literatures is presented.

TL;DR: In this article, a topology optimization method for the frequency response of a multiphysics system involving fluid-structure interaction is presented, which is based on the bi-directional evolutionary structural optimization (BESO).

TL;DR: In this article, the buckling analysis of a benchmark cylindrical panel undergoing snap-through when subjected to transverse loads is revisited, and a numerical procedure composed of the arclength and branch switching methods is used to identify the full postbuckling response of the panel.

TL;DR: In this article, the Coulomb's friction rule is employed to address the stick-slip behavior on the contact interface through a return mapping algorithm in conjunction with a symmetrized (nested) augmented Lagrangian approach.

TL;DR: In this paper, the authors used the Concrete Damaged Plasticity (CDP) model for both uni-and biaxial stress states, and for cement composites with a large strain hardening capacity (ratio of failure stress to linear stress limit more than 8).

TL;DR: In this paper, a bi-directional evolutionary structural optimization (BESO) method is proposed to maximize the first natural frequencies of the acoustic-structural model by switching elements into solid, fluid or void condition.

TL;DR: In this paper, three models were developed to simulate the transfer of prestress force from steel to concrete in pre-tensioned concrete elements, and a closed-form expression was proposed to predict the transmission length and stress distribution along the tendon.

TL;DR: In this article, a failure model for random short microfiber reinforced composite materials based on the Extended Finite Element Method (XFEM) is presented, which is suitable for very high aspect ratio inclusions.

TL;DR: In this article, a method to generate ITZ meshes called aggregateexpansion method (AEM) is proposed to generate wedge elements around 50µm thick to represent ITZ's layer structure.

TL;DR: In this paper, the wave finite element (WFE) method is investigated to describe the dynamic behavior of periodic structures like those composed of arbitrary-shaped substructures along a certain straight direction.

TL;DR: In this article, an original model for void closure is presented, accounting for the void's geometry and orientation, as well as the mechanical state during deformation, based on a wide campaign of finite element simulations at the scale of a representative volume element Various void geometries are defined and several mechanical states are prescribed on a range that is representative of industrial loadings.

TL;DR: Results in agreement with theoretical predictions and comparable to other numerical approaches in terms of energies and fragments' shapes are obtained with an explicit time-integration scheme and non-local continuum damage.

TL;DR: DKMQ24 as discussed by the authors is a quadrilateral shell element with 6 degrees of freedom per node, which is derived from the Naghdi/Mindlin/Reissner shell theory.

TL;DR: In this paper, the mixed finite element method is proposed to overcome the confusing fact of nonlocal beam model subjected to concentrated load, which is a major limitation of the regular finite element formulation.

TL;DR: In this article, a multiscale asymptotic analysis and computation for predicting heat transfer performance of periodic porous materials with radiation boundary condition was presented, and some numerical results were given in details.

TL;DR: In this paper, the authors proposed a method for topologically complex shell structures using trimmed NURBS surfaces and exact normal vectors, which can be used to solve linear elastic benchmark problems.

TL;DR: The FEniCS project as mentioned in this paper provides a tool for the automated solution of partial differential equations by the finite element method, which offers a significant flexibility with regards to modelling and numerical discretization choices.

TL;DR: In this paper, the authors deal with modeling and model reduction methods intended to sandwich structures with viscoelastic materials, by combining the First order shear deformation theory (FSDT) with the Golla-Hughes-Mc Tavish (GHM) model.

TL;DR: In this article, a nonlinear inelastic time-history analysis procedure for space semi-rigid steel frames subjected to dynamic loadings is presented, where geometric nonlinearities are taken into account by using stability functions and the geometric stiffness matrix.

TL;DR: The numerical experiments show that the proposed matrix-free GPU instance of FGFEA can achieve significant speedup over classical sparse-matrix CPU implementation using similar iterative solver.

TL;DR: In this paper, a three-dimensional meso-mechanical model to study the debonding of FRP-to-concrete is described and then verified in a numerical simulation.

TL;DR: In this article, the authors investigated the artificial neural networks (ANN) potential to predict the value of some parameters, avoiding the traditional trial-and-error procedure to determine these values.

TL;DR: In this paper, a finite element formulation for a non-local particle method is proposed for elasticity and fracture analysis of 2D solids, which is based on a new particle method which incorporates a nonlocal multi-body particle interaction into the conventional pair-wise particle interactions.

TL;DR: In this article, a numerical method for predicting the fatigue life of high-pressure braking hose in the lamination structure composed of pure rubber and fabric braided layers is introduced. But the method is limited to the case of high pressure braking hose.

TL;DR: In this paper, a model suitable for studying elastic wave propagation in waveguides with an arbitrary cross-section in the time and frequency domain is presented, which is applied to a long pipeline containing a defect of arbitrary shape.

TL;DR: In this paper, a successive perturbation-based method for multiscale stochastic analysis of heterogeneous materials such as composite materials is proposed, which can be applied to both smooth nonlinear response functions and non-smooth response functions.

TL;DR: An implementation and detailed analysis of an FE algorithm designed for real-time solution, particularly aimed at elasticity problems applied to soft tissue deformation is presented and an indication is provided that the GPGPU technology shows promise in the undertaking of real- time FE computation.