Showing papers in "Finite Elements in Analysis and Design in 2003"

TL;DR: Explicit formulas for size, shape, skew, and combined mesh quality metrics are given for triangular, tetrahedral, quadrilateral, and hexahedral finite elements.

TL;DR: In this article, a wavelet-based beam element is constructed by using Daubechies scaling functions as an interpolating function for beam bending problems with various boundary conditions and structures.

TL;DR: A triangular element based on Reddy's higher-order shear deformation plate theory is developed in this article, where the plate theory could not be exploited as expected in finite-element analysis.

TL;DR: In this paper, a finite element approach for the analysis of the wave propagation in an infinitely long plate is presented, where a nonreflecting boundary condition such that there will be no spurious reflections generated by the finite boundary of the finite element model is introduced.

TL;DR: In this article, a new method to solve the uncertain eigenvalue problem of structures with interval parameters is presented, where the expressions of the interval stiffness matrix and interval mass matrix are developed directly from the interval parameters.

TL;DR: In this article, the authors considered the inverse problem of determining an arbitrary source in a time-dependent corvective-diffusive transport equation, given a velocity field and pointwise measurements of the concentration.

TL;DR: In this paper, a two-dimensional triangular finite element formulation including an extra degree of freedom was derived on the basis of Eringen's micropolar elasticity theory, and a corresponding computer program was developed to investigate the relation between the Poisson's ratio of re-entrant honeycomb structure using various structural geometric parameters.

TL;DR: In this paper, the authors used the finite element method to explore the plastic flow pattern of a circular tube that is hydraulically expanded or crushed into a rectangular cross-section.

TL;DR: A formulation is proposed for homogenization of magnetostrictive particle-filled elastomers (MPFE) based on an interface-enriched reproducing kernel particle method and homogenized constitutive behavior of uniaxial tension and simple shear deformation of MPFE.

TL;DR: In this paper, a numerical modeling used to simulate the metallo-thermo-mechanical behaviors during quenching and tempering is presented, which is coded into program Numerical Simulation of Heat Treatment (NSHT), which is verified to be effective in simulation of heat treatment by comparing with the measured results.

TL;DR: In this article, several previously published ductile fracture criteria are selected, and their values of critical damage at the levels of deformation at which fracture starts are obtained through a series of experimental tests comprising cylindrical, tapered and flanged geometries.

TL;DR: In this article, a methodology based on function approximations and the convolution theorem is presented to estimate the structural failure probability, which is applicable to structural reliability problems with any number of random variables and any kind of random variable distribution.

TL;DR: In this paper, an iterative optimization algorithm using orthogonal arrays is proposed for design in discrete space and matrix experiments are conducted to show the validity of the proposed method and the results are compared with those from a genetic algorithm.

TL;DR: In this article, topology and shape optimization of structures were discussed using finite element method (FEM) and boundary element method(BEM), and the bibliography contained references to papers, conference proceedings and theses/dissertations dealing with the topology/shape optimization published in 1999-2001.

TL;DR: In this article, the results of a simulation where welding and stress relief heat treatment operations are combined were used to estimate the heat transfer coefficient of the component's surface during the heat treatment.

TL;DR: In this paper, the effect of friction during cold compression between the forging and the steel compression platens, increasing/decreasing the amount of cold compression plastic deformation, natural ageing prior to cold compression, cold compression direction (LT v L v ST) and applying cold compression in 'bites' on residual stress magnitudes is evaluated.

TL;DR: In this article, the effect of selected design parameters on crashworthiness of a struck ship is investigated, including the material model of the struck ship, the friction coefficient for the contact between the vessels, the initial velocity of the striking ship, and the motion of the strike ship.

TL;DR: In this article, the numerical analysis of large deformations of flexible membrane structures with wrinkling is considered and a new concept of taking wrinkles into account based on the cable analogy is proposed.

TL;DR: In this article, an implicit gradient damage model for finite strain elastoplasticity problems including strain softening is presented. But the formulation of the resulting constitutive equations is intimately coupled with the finite element formulation, in contrast with standard local material models.

TL;DR: In this article, the authors developed a methodology to obtain the optimum punch-die clearance for a given sheet material by the simulation of the blanking process, which combines predictive finite element and neural network modeling of the leading blanking parameters.

TL;DR: In this article, an eight-noded isoparametric shell element is used in association with three-nodes curved beam element for the formulation of the stiffened panel element.

TL;DR: An interpolatory formulation for MLS approximants is presented: it allows the direct introduction of boundary conditions, reducing the processing time and improving the condition numbers, and the computed results confirm the accuracy and correctness of the proposed formulation.

TL;DR: In this paper, an octopus-type car rim was optimized using an elasto-plastic analysis, in which critical zones were found first and then optimum thickness was investigated.

TL;DR: In this paper, an original technique based on finite element method was proposed to determine the optimum pressure-time profile in superplastic forming processes, and the proposed technique was tested with reference to the forming of a thin circular plate clamped in a rigid die and formed by a pressure differential.

TL;DR: In this paper, a new highly accelerated mechanical-thermal (HAMT) test system has been developed to reduce the reliability testing time for new electronic products, in which a cyclic out-of-plane deformation is imposed on a printed circuit board (PCB) assembly by twisting the PCB mechanically inside a thermal chamber.

TL;DR: In this article, a mathematical model for the thermoelectric behavior of an electric arc electrode is introduced and numerically solved, where the axisymmetry of the domain allows the problem when it is written in cylindrical coordinates.

TL;DR: In this paper, a space and time-discontinous Galerkin (TDG) finite element method for analyzing three-dimensional linear transient elastodynamic problems is presented.

TL;DR: In this article, an adhesively bonded tubular single lap joint subjected to airflows having different temperature and velocity outside and inside its inner and outer tubes was carried out using the incremental finite element method.

TL;DR: In this article, a mesh superposition technique is presented for an efficient finite element analysis, which allows local refinement of the mesh without introducing transition region or multi-point constraints, by applying appropriate boundary conditions on the local superimposed mesh, singularity in the global stiffness matrix can be avoided and inter-element compatibility conditions can be satisfied.

TL;DR: In this article, the numerical modeling of powder-forming process is simulated by a finite element analysis using a density-dependent endochronic plasticity model, and the numerical schemes are examined for efficiency in the modeling of a multi-level and tip shape powder compaction component.