Showing papers in "Finite Elements in Analysis and Design in 2004"

TL;DR: In this article, the results of geometric nonlinear benchmark problems of shells are presented in the form of load-deflection curves and the relative convergent difficulty of the problems are revealed by the number of load increments and the total number of iterations required by an automatic load increment scheme for attaining the converged solutions under the maximum loads.

TL;DR: In this article, a reliability-based design optimization method is developed to apply to topology design problems using the total Lagrangian formulation, the spatial domain is discretized using Mindlin plate elements with the von Karman strain-displacement relation.

TL;DR: In this paper, a two-dimensional wavelet finite element (WFE) is constructed, in which the scaling functions of Daubechies wavelets are adopted as trial functions.

TL;DR: In this paper, a general purpose design scheme of actively controlled smart structures with piezoelectric sensors and actuators is presented, which can make use of any finite element code with picolectric elements, and control design is carried out in state space form established on finite element modal analysis.

TL;DR: In this paper, a general displacement functional as the objective function was proposed for topology optimization of both geometrically and materially nonlinear structure using the adjoint method, and the results of mean compliance design were compared under linear analysis, geometrical nonlinear analysis, material nonlinear analyses, and combined non-linear analysis.

TL;DR: In this article, an experimental and numerical study of the mechanical behavior of SAE 1045 steel sheet specimens during the conventional tensile test is presented, where an experimental-numerical methodology is proposed in order to derive the elastic and hardening parameters which characterize the material response.

TL;DR: In this article, eigenvalue analysis is carried out using Lanczos algorithm in an adaptive h-version finite element environment in order to control the discretization error for accurate evaluation of modal parameters.

TL;DR: In this article, the authors discuss the technologies needed to support the application of simulation-based design for automotive climate control system design, including a simulation model manager, simulation data manager, adaptive control tools and simulation model generators.

TL;DR: In this article, a hybrid tuned mass damper system composed of several subsystems is proposed to reduce the multiple resonant peaks of a cable-stayed bridge subjected to high-speed trains.

TL;DR: In this paper, two finite element optimization techniques, topology optimization and sizing optimization, are explored to find out an optimal manufacturing feasible design from multiple optimized designs, and the relationship between the rigidity improvement and different configuration of material reinforcement is investigated.

TL;DR: This paper presents the concept of using a computational framework for enabling rapid development of parallel adaptive multiphysics application codes and describes these capabilities in the context of the SIERRA framework developed at Sandia National Laboratories.

TL;DR: In this article, a fuzzy logic control algorithm is used to optimize the forming load path of a typical tube hydroforming process to avoid the failure of the tube due to excessive induced strain during the forming process.

TL;DR: In this paper, a finite element method with the adaptive Delaunay triangulation as mesh generator is used to analyze two-dimensional crack propagation problems and the resulting stress intensity factors and simulated crack propagation behavior are used to evaluate the effectiveness of the combined method.

TL;DR: In this article, the transient response of laminated composite plates with embedded smart material layers is studied using a unified plate theory that includes the classical, first-order, and third-order plate theories.

TL;DR: In this paper, a coupled thermo-kinetic simulation of the liquid composite molding process based on a three-dimensional Galerkin finite element method is presented, where the thermal equilibrium and chemical kinetics during the curing phase of Resin Transfer Molding process are obtained subject to mold temperature history and corresponding manufacturing process plans.

TL;DR: In this paper, a strategy to avoid locking by means of a calibrated choice of the displacement shape functions is proposed and a comparison between different displacement-based elements, in terms of local error, global error and convergence rate, is presented.

TL;DR: In this article, a three-field mixed finite element is proposed for the non-linear analysis of composite beam with deformable shear connection, considering the nonlinear behaviour of materials and shear connectors.

TL;DR: In this paper, the performance of simplified finite element structural models for spot-welded joints with mesh refinements is evaluated against converged three-dimensional finite element models and a detailed error analysis is provided.

TL;DR: In this paper, a finite element analysis and fatigue test are performed to estimate the fatigue strength for the laser-welded lap joint, where the residual stress and welding direction of the lap joint have been considered in relation to its fatigue strength.

TL;DR: In this article, an interval optimization method was proposed to solve the uncertain problems of the vibration systems with multi-degrees of freedom, where the structural characteristics were assumed to be expressed as interval parameters.

TL;DR: In this paper, a topology optimization technique based on boundary heating is proposed to produce localized thermal actuation, using only simple forms of boundary heating, which can be applied to design a novel type of integral attachment mechanisms, which benefits the design for disassembly.

TL;DR: In this article, 3D Eulerian and Lagrangian finite element models of various lengths are created for simulation of the laser forming process and the results of Lagrangians approach are in good agreement with the experimental results reported by Kyrsanidy (J. Mater. Technol. 87 (1999) 281).

TL;DR: In this article, a new approach for characterizing flexible pavement rutting using creep model-based finite element analysis (FEA) is presented, and new criteria were developed for identifying pavement layer failures based on evaluation of transverse surface profiles.

TL;DR: In this article, a three-dimensional finite element model of the thermosonic wirebond looping process was presented, and the gold wire heat affected zone load-displacement relationship was investigated using precision microforce tensile tests.

TL;DR: In this paper, a finite element analysis for bursting failure prediction in bulge forming under combined internal pressure and independent axial feeding is carried out by means of the FEM combined with Oyane's ductile fracture criterion based on the Hill's quadratic plastic potential, forming limit and bursting pressure level.

TL;DR: In this article, the authors presented the method of analysis of the wave propagation process in cracked plates and elaborated a new type of finite spectral plate element with a crack, which was assumed that the crack having an arbitrary length, depth and location was parallel to one side of the plate.

TL;DR: In this article, a mathematical description of conical involute gears is presented and the equations and the intervals for the surface parameters are then used to create a general finite element model of involute gear.

TL;DR: In this paper, an elasto-plastic finite element method based on the updated Lagrangian formulation is developed to investigate the tube end radius, tube end downward depth, and tube end strain rate.

TL;DR: In this paper, a spectral finite element with embedded transverse crack is developed and implemented to simulate the diagnostic wave scattering in composite beams with various forms of transverse cracks, such as surface-breaking cracks, matrix cracking and fiber fracture.

TL;DR: The mesh-free moving least-squares differential quadrature (MLSDQ) method as mentioned in this paper was proposed for solving the fourth-order, partial differential equation governing the bending of thin plates according to classical plate theory.