Showing papers in "Finite Elements in Analysis and Design in 1997"

TL;DR: A Delaunay-type mesh generation algorithm governed by a metric map is proposed and it will be shown that the proposed method applies in three dimensions.

TL;DR: Although the need for adaptive refinement is common to many areas of scientific computation, the examples in this survey paper are drawn almost exclusively from the domain of computational fluid dynamics.

TL;DR: The methods most commonly used, the specification of desired element size/shape and surface definition/meshing, and the use of automatic grid generators as an enabling technology for moving body simulations and adaptive remeshing techniques are discussed.

TL;DR: Some application examples resulting from a governed Delaunay type mesh generation method, isotropic and anisotropic cases are considered, these specifications being given via a metric map.

TL;DR: This work represents the first attempt made in the field of fuzzy finite-element analysis involving dynamics, and is proposed for vibration analysis of imprecisely defined systems.

TL;DR: A conceptually straightforward and computationally efficient system is presented that automatically generates three-dimensional finite element meshes for completely arbitrary, multiple material domains that requires no user intervention and has the ability to vary the resolution throughout the domain.

TL;DR: The spatial twist continuum (STC) as mentioned in this paper is an extension of the dual of a hexahedral mesh, and it captures the global connectivity constraints inherent in hexahedra meshing.

TL;DR: In this article, the authors present a methodology for optimal design of cooling systems for multi-cavity injection mold tooling by modeling the mold cooling design as a non-linear constrained optimization problem.

TL;DR: A quantitative study of dispersion in Chebyshev spectral finite element solutions to the one-and two-dimensional scalar wave equations is presented in this paper, where the spectral elements employ central time differencing and three mass matrix treatments: consistent, row-summed and diagonal-scaled.

TL;DR: An automatic mesh generator providing tetrahedral meshes suitable in general for finite element simulations and recent improvements relative to this a priori well-known method are described.

TL;DR: In this article, a finite element formulation is presented for modeling the plate structure containing distributed piezoelectric sensors and actuators (S/As), and a new plate bending element for analysis of the plate with distributed S/As is developed.

TL;DR: In this paper, the applicability and accuracy of existing formulation methods in general purpose finite element programs to the finite strain deformation problems are investigated and the basic shortcomings in using such programs in these applications are pointed out and the need for a different type of formulation is discussed.

TL;DR: In this article, a quadrilateral 4-node element that satisfies the inf-sup condition in linear analysis is shown to fail in large strain analysis, and the reasons for this element behavior are explored.

TL;DR: A different method for generating high-quality tetrahedralizations, based on Delaunay triangulation and not presenting the problem of sliver tetrahedra, is presented.

TL;DR: Algorithms for the adaptive refinement of unstructured simplicial meshes (triangulations and tetra hedralizations) are reviewed and bounds on the quality of the meshes resulting from these refinement algorithms are discussed.

TL;DR: In this paper, a unified representation scheme for the p-version of the finite element method is presented, in which all boundary curves and surfaces are approximated by piecewise polynomials.

TL;DR: In this article, a finite element dynamic model for a rotor bearing system is developed, where the model accounts for the gyroscopic moments and anisotropic bearings of the rotor bearing and a reduced order model using modal truncation is obtained.

TL;DR: An evolutionary structural optimization (ESO) method for problems with stiffness constraints which is capable of performing simultaneous shape and topology optimization has been recently presented as mentioned in this paper, which discusses various aspects of this method such as influences of the element removal ratio, the mesh size and the element type on optimal designs.

TL;DR: In this article, a multi-tooth contact analysis using finite element method for calculating the static transmission errors of plastic spur gears is established to compare with the existing method for steel spur gears.

TL;DR: In this paper, the effect of the adhesive joint between the honeycomb core and the face sheets on the load transfer and static response of sandwich panels was examined. But the adhesive joints were not modeled by three-dimensional solid elements.

TL;DR: In this article, the response of buried shelters to blast loadings due to conventional weapon detonation has been investigated using the finite element method using a commercial FEA software package, ABAQUS, and the validity of finite element model parameters adopted was established by comparisons with existing empirical formulae available for free-field conditions in a soil half-space.

TL;DR: In this article, an efficient procedure for the analysis of brake squeal using MSC/NASTRAN models is described and a unique nonlinear method accounts for both superelement modes and surface friction data.

TL;DR: In this paper, a new component mode synthesis method is presented that combines the computational efficiency of the well-known constraint mode approach with the dynamic compensation accuracy obtained by higher-order expansion methods.

TL;DR: In this article, a nonlinear finite element analysis is used to analyze the cross-section of a door weathership seal for compression load deflection (CLD) behavior, contact pressure distribution and aspiration due to a pressure differential across the seal.

TL;DR: In this paper, an alternative formulation for the static co-rotational technique in conjunction with a simple faceted shell idealisation is presented. And the use of interface elements and fracture energy-related softening curves for modelling mixed mode delamination in composites is discussed.

TL;DR: A method for generating directionally refined unstructured tetrahedral meshes applicable to the construction of meshes suitable for the simulation of inviscid and viscous aerodynamic flows is presented.

TL;DR: In this article, a set of hexahedral finite element expansions for use in hybrid domains using hexahedrons, prisms, pyramids and tetrahedrons is introduced. The expansions are explained in terms of a unified notation.

TL;DR: In this article, a nonlinear finite element formulation for studying the postbuckling behavior of laminated composite plates induced by a uniform/non-uniform temperature field is presented, based on the Reissner-Mindlin first order shear deformation theory.

TL;DR: In this paper, an automatic adaptive quadrilateral mesh conversion scheme for the generation of adaptive refinement meshes over analytical curved surfaces is proposed, where the starting point of the generator is a background triangular mesh of the curved surface.

TL;DR: The scheme ties together several meshing technologies including advancing front tri meshing, background meshes, tri to quad conversion, constrained Laplacian smoothing, and topological and quality-based element improvement.