Flexural behavior of delta and bi-delta cold-formed steel beams: experimental investigation and numerical analysis by Yazid Hadidane, Nadia Kouider, Mohammed Benzerara

“…A nonlinear analysis by finite elements (FE) using the ABAQUS calculation program is carried out, thus making it possible to compare the experimental results with the numerical ones as well as those which are given by the theory proposed by Eurocode 3. …”
Get full text

Analysis of the presence of bonding defects on the fracture behavior of a damaged plate repaired by composite patch by Nadia Kaddouri, Madani Kouider, Mohammed Bellali Amine, Xavier Feaugas

“…Our work fits in this context; the objective is to analyze by the method of finite elements the behavior in the rupture of a damaged plate in the presence of defect of bonding. …”
Get full text

Design and Control of Nonlinear Mechanical Systems for Minimum Time by J.B. Cardoso, P.P. Moita, A.J. Valido

“…The dynamic response and its sensitivity are discretized via space-time finite elements, and may be integrated either by at-once integration or step-by-step. …”
Get full text

Health Assessment of Large Two Dimensional Structures Using Limited Information: Recent Advances by Ajoy Kumar Das, Achintya Haldar, Subrata Chakraborty

“…The procedure is a finite elements-based time-domain system-identification technique. …”
Get full text

Unstructured Grids and the Multigroup Neutron Diffusion Equation by German Theler

“…A simple two-dimensional homogeneous circular reactor is solved using a coarse unstructured grid in order to illustrate some basic differences between the finite volumes and the finite elements method. Also, the classic 2D IAEA PWR benchmark problem is solved for eighty combinations of symmetries, meshing algorithms, basic geometric entities, discretization schemes, and characteristic grid lengths, giving even more insight into the peculiarities that arise when solving the neutron diffusion equation using unstructured grids.…”
Get full text

Modeling and Simulation of the Hydrogenation of α-Methylstyrene on Catalytically Active Metal Foams as Tubular Reactor Packing by Farzad Lali, Felix-Aron Pahner, Rüdiger Lange

“…The method of orthogonal collocation on finite elements was applied. For isothermal and polytropic processes and steady state conditions, axial profiles for concentration, temperature, fluid velocities, pressure, and liquid holdup were computed and the conversions for various gas and liquid flow rates were validated with experimental results. …”
Get full text

On the analysis of modes in a closed electromagnetic waveguide by Halla, Martin, Monk, Peter

“…They can also be used to construct generalized Dirichlet-to-Neumann maps that provide artificial boundary conditions for truncating a computational domain when discretizing the field by finite elements. The modes of a waveguide arise as eigenfunctions of a non-symmetric eigenvalue problem, and the eigenvalues determine the propagation (or decay) of the modes along the waveguide. …”
Get full text

Nonstationary Random Vibration Performance of Train-Bridge Coupling System with Vertical Track Irregularity by Xiaozhen Li, Yan Zhu, Zhibin Jin

“…A multibody mass-spring-damper model is employed to represent a moving railway car and the bridge system is simulated by finite elements. By introducing the pseudo excitation algorithm into the train-bridge interaction dynamic system, expressions of the mean value, standard deviation, and power spectral density of the nonstationary random dynamic responses of bridge and vehicles are derived. …”
Get full text

Multiple and non-planar crack propagation analyses in thin structures using FCPAS by H. Dündar, A. O. Ayhan

“…The method makes use of finite elements, specifically three-dimensional enriched elements to compute stress intensity factors (SIFs) without special meshing requirements. …”
Get full text

Degradation of Interfacial Bond for FRPs Near-Surface Mounted to Concrete Under Fatigue: An Analytical Approach by Xun Wang, Lijuan Cheng

“…The bond region was discretized into finite elements to include the effect of bond degradation to different extents, and a closed-form solution was derived by virtue of appropriate boundary conditions in each fatigue cycle. …”
Get full text

Affine Discontinuous Galerkin Method Approximation of Second-Order Linear Elliptic Equations in Divergence Form with Right-Hand Side in L1 by Abdeluaab Lidouh, Rachid Messaoudi

“…We consider the standard affine discontinuous Galerkin method approximation of the second-order linear elliptic equation in divergence form with coefficients in L∞Ω and the right-hand side belongs to L1Ω; we extend the results where the case of linear finite elements approximation is considered. We prove that the unique solution of the discrete problem converges in W01,qΩ for every q with 1≤q<d/d-1 (d=2 or d=3) to the unique renormalized solution of the problem. …”
Get full text

Virtopsy: Development and Application in Forensic Practice by Dong-Hua Zou, Yuan-Yuan Liu, Ning-Guo Liu, Yi-Jiu Chen

“…Virtual autopsy provides two-dimensional and three-dimensional postprocessing techniques, combining surface and in vivo information with geometrically realistic records, and even combining with finite elements for computer-simulated dynamic simulation studies. …”
Get full text

Comparison of Two Mechanics-Based Methods for Simplified Structural Analysis in Vulnerability Assessment by H. Crowley, B. Borzi, R. Pinho, M. Colombi, M. Onida

“…This paper looks at two mechanics-based vulnerability assessment methods (DBELA and SP-BELA) and compares the nonlinear static response predicted with these methods with finite elements-based nonlinear analyses of prototype buildings. …”
Get full text

Control of local stress in semiconductor silicon structures by S. F. Sianko, V. A. Zelenin

“…This method is based on consequent measurements of intensity of Makyoh image elements of the structure along the chosen direction followed by calculation of micro-geometrical profile and curvature radius.The estimation of residual stress of topological elements Si–SiO system was carried out by means of calculation of interference pictures obtained in a film-substrate gap after separating of film edge from substrate along open window perimeter.Analytical expressions relating semiconductor structure image characteristics with their deformation were developed by means of finite elements method. The expressions allow determining of local residual stress of chosen area of the structure. …”
Get full text

Nonlinear Vibrations of Thin-Walled Composite Frames by Ahmed K. Noor, Jeanne M. Peters

“…The flanges and webs of the frames are modeled by using geometrically nonlinear two-dimensional shell and plate finite elements. The computational procedure can be conveniently divided into three distinct steps. …”
Get full text

A Comparison Investigation on Cylinder Test in Different Ambient Media by Experiment and Numerical Simulation by Fan Zhang, Fei Shen, Biaobiao Li, Baohui Yuan, Bing Li

“…For the numerical simulation, a coupling scheme of a meshless method and finite element method called the coupled finite element material point method was used to reproduce the cylinder expansion problem driven by explosive sliding detonation where the interaction between the cylinder wall and the explosive/detonation product is enforced by using a point-to-surface contact scheme to accurately achieve contact and separation between material particles and finite elements. …”
Get full text

Design and Simulation of an Antenna-Coupled Microbolometer at 30 THz by Angel Colin, Eduardo Pérez-Tijerina, Francisco Solis-Pomar

“…The device has been simulated by means of the commercial electromagnetic software (HFSS), which is based on the finite elements method. The predicted values for the figures of merit of this microbolometer are as follows: τ=5.8 ns, Rv=5.3×103 V/W, and D⁎ = 2.07×1010 cmHz/W, respectively.…”
Get full text

Circular thin plates buckling analysis with HRPIM method by Baid Sokayna, Hilali Youssef, Mesmoudi Saïd, Bourihane Oussama

“…The critical buckling loads have been calculated for different values of h/R ratio and compared with Finite Elements Method to illustrate the efficiency, robustness and accuracy of this approach across various boundary conditions.…”
Get full text

Influence of Boundary Conditions on the Simulation of a Diamond-Type Lattice Structure: A Preliminary Study by Patrick Terriault, Vladimir Brailovski

“…Because these structures comprise a large number of ordered unit cells, their design using conventional modeling approaches, such as finite elements, becomes a real challenge. A homogenization technique, in which the lattice structure is simulated as a fully dense volume having equivalent material properties, can then be employed. …”
Get full text

Simulation Analysis of Air Flow and Turbulence Statistics in a Rib Grit Roughened Duct by I. I. Vogiatzis, A. C. Denizopoulou, G. K. Ntinas, V. P. Fragos

“…In this paper we investigate the two-dimensional, turbulent, unsteady flow around rectangular ribs of variable aspect ratios by directly solving the transient Navier-Stokes and continuity equations using the finite elements method. Flow characteristics and several aspects of turbulent flow are presented and discussed including velocity components and statistics of turbulence. …”
Get full text