Showing papers in "Finite Elements in Analysis and Design in 2000"

TL;DR: An approximate analytical method is presented to evaluate efficiently and accurately the call blocking probabilities in wavelength routing networks with multiple classes of calls, and path decomposition algorithms for single-class wavelength routing Networks may be readilt extended to the multiclass case.

TL;DR: In this article, a nonlinear finite element model with a non-associative Drucker-Prager plasticity was developed to account for restrain pressure sensitivity of concrete columns, and the predicted stress-strain curves compare favorably with test results.

TL;DR: In this article, a detailed finite element solution of spot welds for various ratio values between the sheet metal thickness and spot-weld diameter was obtained from detailed analysis using the finite element method and used to provide a mechanics-based rationale for relevant experimental observations in the literature.

TL;DR: The additive ESO (AESO) algorithm as mentioned in this paper is the first one to achieve the Min-Max optimality criterion, which is based on the minimum structural form required to carry the load regardless of the magnitude of the stress.

TL;DR: In this paper, the interval finite element method is used to solve the uncertainty problems of the beam structures, where the beam characteristics are assumed to be represented as interval parameters, and the interval analysis is used for obtaining the solution.

TL;DR: In this paper, the fir-tree region analysis of aeroengine turbine disc assemblies is performed using the photoelastic-stress-freezing technique, and the effect of skew angle and interfacial friction between the disc and attached blades upon the resulting contact stresses at the interface and through the disc thickness is investigated.

TL;DR: In this paper, the authors investigated the residual stress fields in a welded T-joint, comparing those computed by 3D models with those estimated by 2D models, and showed that the temperature distribution in the central zone of the joint can be captured successfully by a 2D finite element model and a technique that takes into account the heat transfer balance and welding speed.

TL;DR: In this article, NURBS-based free form deformation, finite element analysis, sensitivity analysis, collision detection, and virtual reality are combined to create an interactive environment for designers to view and modify part shape, evaluate the resulting stresses, and check for interference of the new part shape and surrounding parts in real-time.

TL;DR: In this article, a cracked beam finite element has been formulated based on elasto-plastic fracture mechanics and the finite element method, and the model can be applied to static, dynamic and stability analysis of cracked beam-like structures.

TL;DR: In this article, the authors derived finite element formulations on the basis of the updated Lagrangian formulation and the principle of virtual work for nonlinear dynamic responses of structures integrated with piezoelectric materials.

TL;DR: In this article, a simulation of a truck impacting a strong-post W-beam guardrail is presented and three major issues which involve the use of springs to simulate component crashworthiness behavior is investigated.

TL;DR: An elasto-plastic analysis of fretting stresses in a pre-stressed strip in contact with a cylindrical pad is studied using a finite element solver, ABAQUS as discussed by the authors.

TL;DR: In this article, a quasi-static Ritz vector (QSRV) method is proposed to generate Ritz vectors for low frequency problems, which is more efficient in terms of the number of vectors and more stable in orthogonality.

TL;DR: In this article, a finite element analysis is used to study the penetration of aluminum plates impacted by titanium impactors in order to simulate the effect of such uncontained engine debris impacts on aircraft fuselage-like skin panels.

TL;DR: A general and accurate finite element model for helical springs subject to axial loads (extension or/and torsion) is developed in this paper, where only a slice of the wire cross-section needs to be modelled; hence, more accurate results can be achieved.

TL;DR: In this paper, a new twin-cam 16-valve cylinder head and block structure accompanied with several important sub-components under "ring load and assembly loads has been investigated using the "nite element method".

TL;DR: The present formulation utilizes the robust standard first-order shear deformation shell finite element for implementation of the proposed representation of the transverse shear stresses and strains and is consistent for both transverseShear stresses as well as transverse Shear strains.

TL;DR: In this article, a joint design method was established in which reduction of joint reinforcement was achieved by treating joint shear as part of the complete force transfer across the joint, rather than as an independent action.

TL;DR: In this article, a numerical investigation of the dynamic buckling of an elastic slender beam, with initial geometric imperfections, subjected to an intense axial impulse is presented, where the pulse buckling response is numerically modelled via the finite difference and finite element methods.

TL;DR: This paper discusses two different methodologies: 1. Classical probabilistic approach, in which the properties are treated as random variables, and 2. Possibilism approach, by a model based on the theory of fuzzy sets.

TL;DR: In this paper, the flexural capacity of structural wood joists and planks containing fastener holes was modeled utilizing finite element analysis (FEA) coupled with the tensor polynomial strength theory.

TL;DR: In this paper, a second-order characteristic matrix equation on λ is derived by a one-dimensional finite element formulation that only discretizes the domain circumferentially, assuming that the displacement field is proportional to the (λ+1)th power of the distance from the singular stress point.

TL;DR: A finite element model was established to analyze the structural integrity of a ball bearing whose outer ring was modified to accommodate a miniaturized load sensor module, which was designed to monitor dynamic load variations within the bearing as discussed by the authors.

TL;DR: In this paper, the torsional rigidity of arbitrarily shape bar made of different materials is studied on the basis of theory of elasticity and finite element approach, with additional boundary conditions for the common boundaries for the different materials from the continuous conditions of deformation and traction across the interior boundary.

TL;DR: In this paper, the authors extend SEA to the middle-frequency region by additionally using global modes, which can be found by NASTRAN and then the results are post processed to determine coupling loss factors.

TL;DR: In this paper, the numerical performance of general shell elements in modeling spot-welded joints is investigated, and it is found that a properly refined finite element mesh of general shells can produce stress and deformation solutions comparable to those generated by a similarly refined mesh of 3D solid elements.

TL;DR: In this paper, a stochastic finite element procedure is presented for the solution of structure-foundation problem, which involves two stages, the first stage is hinged upon adequate representation of the Stochastic field and its digital simulation by the local averaging technique along with the covariance matrix decomposition.

TL;DR: In this paper, the authors used the Lewis-Ransing correlation to link the stress model with an optimization model for the optimal feeding design, and the air gap width value was used to approximate the interfacial heat transfer coefficients.

TL;DR: This work presents parallel algorithms, based on geometric heuristics, to optimize the quality of coarse grid point sets and the meshes constructed from them, for use in multigrid solvers for 3D-unstructured problems.

TL;DR: In this paper, the authors compare different numerical implementation algorithms for the rate type constitutive equation and present an integration scheme based on the physical meaning of the stress, which is investigated in conjunction with the return mapping algorithm and the conditions to maintain plastic consistency.