Showing papers in "Finite Elements in Analysis and Design in 2005"

TL;DR: In this article, a dynamic model of the drillstring including both drillpipe and drillcollars is formulated, which accounts for the gyroscopic effect, the torsional/bending inertia coupling, and the effect of the gravitational force field.

TL;DR: In this paper, a meshing preprocessor based on a 3D geometrical model of 2D yarns is proposed to obtain a realistic contact surface between yarns without interpenetration for all types of weaving.

TL;DR: In this paper, a nonlinear formulation developed based on von Karman's assumptions is employed to study the free vibration characteristics of functionally graded material (FGM) plates subjected to thermal environment.

TL;DR: A semi-torsional spring analogy model based on a consistent definition of the edge stiffness that avoids mis-shaped elements is presented, which is applicable to both 2D and 3D fully unstructured meshes and includes a computationally efficient means of incorporating geometric information about element shape.

TL;DR: In this paper, a detailed numerical model that can be used to predict the structural performance of a transmission towers as part of transmission line system under downburst loading is presented. But the model is not suitable for transmission lines subjected to normal wind loads and their behavior under high intensity wind loads (HIW), such as downburst, is poorly defined.

TL;DR: The quadtree data structure and conforming polygonal interpolants are used to develop an h-adaptive finite element method and meshfree (natural-neighbor, nn) basis functions on a reference element combined with an affine map to construct conforming approximations on quadtree meshes are used.

TL;DR: In this article, a finite element method is applied to analyze the dynamic responses of railway track and bridge under a moving railway vehicle, where the vehicle, track, and bridge are regarded as an integrated system, and the equations of motion for the vehicle-track-bridge interaction element are directly derived by means of Hamilton principle.

TL;DR: In this paper, finite element coupled heat transfer and elastic-plastic thermal stress analysis using a general purpose commercial FEM software ANSYS (ANSYS Inc., Southpointe, PA, USA) are presented to simulate the in situ residual stress generation during plasma spraying of duplex thermal barrier coatings (TBCs).

TL;DR: In this article, the results obtained using models with different levels of complexity are evaluated and the consequences of using some of the normal approximations concerning to the geometry, boundary conditions and type of model used, are evaluated.

TL;DR: A finite element/finite difference method (FEM/FDM) is developed to solve the time-dependent temperature field in non-homogeneous materials such as functionally graded materials.

TL;DR: In this article, a discrete-spring based clamping model with several rigid parts and a stress-based model with deformable elements were used to simulate physical testing of a bolted joint undergoing slippage.

TL;DR: In this paper, a 3D hydrocode simulation on the perforation and penetration of reinforced concrete targets has been performed to examine the influence of the following constitutive models for concrete on a projectile's residual velocity: (1) constant-yield strength (2) pressure-dependent yield strength (3) pressure dependent yield strength + fracture damage + strain-rate hardening.

TL;DR: In this article, a stabilized finite element method for numerical solution of multiphase flow in porous media, based on a multiscale decomposition of pressures and fluid saturations into resolved (or grid) scales and unresolved (or subgrid) scales, is presented.

TL;DR: In this article, a nonlinear constitutive model for constitutive modeling of polycrystalline ferroelectrics is presented. But the success of these models relies on a hybrid electromechanical variational principle with equilibrating assumed electromechanetic stress (stress + electric displacement).

TL;DR: In this article, a unified and efficient adjoint design sensitivity analysis (DSA) method for weakly coupled thermoelasticity problems is developed, where sensitivity expressions with respect to thermal conductivity and Young's modulus are derived.

TL;DR: In this paper, a multivariable wavelet-based finite element method (FEM) is presented to resolve the bending problems of thick plates, where the interpolating wavelet functions based on boundary conditions are constructed to represent the generalized field functions of the thick plates.

TL;DR: In this article, the transient analysis of delaminated composite and smart composite plates is studied using a newly developed improved layerwise laminate theory, extended to include large deformation and the interlaminar contact during 'breathing' phenomena in the delamination zone.

TL;DR: In this article, the application of least-squares variational principles and the finite element method to the numerical solution of boundary value problems arising in the fields of solid and fluid mechanics is considered.

TL;DR: In this paper, an energy finite element analysis (EFEA) formulation for high frequency vibration analysis of stiffened plates under heavy fluid loading is presented, and the added mass effect and the radiation damping effect due to the fluid loading are incorporated in the derivation of the EFEA governing differential equations.

TL;DR: In this paper, a theoretical study of transmission errors in anti-backlash conical involute gear transmissions is presented, where a global-local finite element (FE) approach was used to reduce the total computation time needed to solve the non-linear contact problems.

TL;DR: In this paper, the p-version, hierarchical finite element method is applied to study geometrically nonlinear periodic vibrations of isotropic simply supported plates, in the elastic regime.

TL;DR: In this article, a full-scale crash test was performed on a vertical flared back concrete bridge rail-to-guardrail transition design to evaluate its compliance with the NCHRP Report 350 test level 3 requirements.

TL;DR: In this paper, a curved box beam finite element with nine degrees of freedom per node, including two distortions, is developed and the validity of the developed box beam element is verified from a series of thorough comparative studies using conventional shell element models.

TL;DR: In this article, an efficient formulation for the computation of matrices for symmetric finite elements is presented for the problem of consistent mass matrices with respect to truss, beam, plane-stress, plate bending, and solid elements.

TL;DR: In this paper, the authors consider a model for dynamic frictionless contact between a viscoelastic body and a foundation, where the material constitutive relation is assumed to be nonlinear and the contact is modelled with the normal compliance condition.

TL;DR: In this article, both the distribution of the contact pressure on the gasket and the stresses of the cylinder head at different loading conditions, such as cold assembly, hot assembly, cold start, and hot firing, are explored by numerical calculation based on the finite element method (FEM).

TL;DR: A high precision composite plate bending element developed by Sheikh et al. has been applied to the free vibration analysis of isotropic and fibre-reinforced laminated composite folded plates as mentioned in this paper.

TL;DR: In this paper, the effects of finite contact width on the contact characteristics and fretting fatigue behavior were investigated, and two contact configurations were considered: cylinder-on-flat and flat with rounded edge-on flat.

TL;DR: In this paper, a robust algorithm based on tracing the neighbours of intersecting triangles is proposed to determine the intersection lines between two triangles, and four fundamental cases are identified and treated systematically to enhance robustness and reliability.

TL;DR: In this paper, the authors proposed a 27-node hybrid hexahedral and a 21-node wedge element for structural analysis, where the higher-order terms in the stress interpolation are identified based on the zero-energy modes that can occur in cubical and wedge-shaped elements.