Showing papers in "Computers & Structures in 2005"

TL;DR: In this article, a numerical method for solving dynamic problems within the peridynamic theory is described, and the properties of the method for modeling brittle dynamic crack growth are discussed, as well as its accuracy and numerical stability.

TL;DR: In this article, the authors used a multiquadric response surface (MRSM) and a radial basis function (RBF) for multiobjective optimization of a vehicle body in frontal collision.

TL;DR: An extensive study of evolutionary computation in the context of structural design has been conducted in the Information Technology and Engineering School at George Mason University and its results are reported here.

TL;DR: In this article, the authors assess and compare the accuracy and robustness of curvature estimates derived from three smooth, VOF-based functions: a convolved VOF (CV) function, a height function (HF), and a reconstructed distance function (RDF).

TL;DR: The robust design of a vibration absorber with mass and stiffness uncertainty in the main system is used to demonstrate the robust design approach in dynamics as discussed by the authors, and the results show a significant improvement in performance compared with the conventional solution.

TL;DR: A partitioned Newton based method for solving nonlinear coupled systems arising in the numerical approximation of fluid-structure interaction problems involving the use of exact cross jacobians evaluation involving the shape derivative of the fluid state with respect to solid motion perturbations is provided.

TL;DR: In this paper, a composite time integration scheme is proposed and tested in some example solutions against the trapezoidal rule and the Wilson @q-method, and found to be effective in some cases where the trapeoidal rule fails to produce a stable solution.

TL;DR: An efficient semi-Lagrangian based particle level set method for the accurate capturing of interfaces that removes the difficulties associated with numerical diffusion, but also alleviates the need for computationally expensive high order accurate schemes.

TL;DR: In this paper, the authors proposed an approach based on consideration of an augmented reliability problem, where the design parameters are artificially considered as uncertain and the desired information about reliability sensitivity can be extracted through failure analysis of the augmented problem.

TL;DR: The basic concepts to obtain a posteriori error estimates for the finite element solution of an elliptic linear model problem are reviewed and it is concluded that the actually practical error estimation techniques do not provide mathematically proven bounds on the error and need to be used with care.

TL;DR: In this article, a successive response surface method for the optimization problems is proposed, where response surfaces are built using Moving Least Squares approximations constructed within a moving region of interest.

TL;DR: This work addresses two difficult points in the simulation of blood flows in compliant vessels: the fluid and structure meshes generation and the solution of the fluid-structure problem with large displacements.

TL;DR: In this paper, the authors present an efficient procedure which allows to carry out reliability-based optimization of linear systems subjected to stochastic loading, where the optimization problem is replaced by a sequence of approximate explicit sub-optimization problems that are solved in an efficient manner.

TL;DR: In this article, the dynamic interaction between high-speed train and bridge is studied by theoretical analysis and field experiment, and a computational model of train-bridge system is established by modal superposition technique.

TL;DR: In this article, a numerical method for the analysis of fluid-structure interaction problems with free surface flows is presented, where a consistent space-time finite element discretization for both continua and a strong coupling algorithm is applied to the highly non-linear problem.

TL;DR: A tunable steepest descent (TSD) algorithm using heuristics approach, which improves the convergence speed significantly without sacrificing the algorithm simplicity and the computational effort, is investigated and outperforms both the DSD and FSD algorithms.

TL;DR: In this paper, a numerical investigation on the effectiveness of open and in-filled trenches in reducing the building vibrations due to passing trains is presented. But unlike most of the previous formulations, this model completely considers the soil-structure interaction effects and directly determines the effect of the wave barrier on the structural response.

TL;DR: In this paper, a trigonometric shear deformation theory for modeling symmetric composite plates discretized by a meshless method based on global multiquadric radial basis functions is presented.

TL;DR: In this article, the application of the method of fundamental solutions to the Cauchy problem associated with two-dimensional Helmholtz-type equations is investigated, where the resulting system of linear algebraic equations is ill-conditioned and therefore its solution is regularized by employing the first-order Tikhonov functional, while the choice of the regularization parameter is based on the L-curve method.

TL;DR: In this article, a three-dimensional means of analysis is proposed for the bridge-vehicle interaction to investigate the dynamic responses of a steel girder bridge and vehicles, and the analytical dynamic wheel loads and acceleration responses of heavy vehicles and responses of the bridge are compared with data from field tests to verify the validity of the proposed procedure.

TL;DR: In this paper, the response of infinite beams supported by nonlinear viscoelastic foundations subjected to harmonic moving loads is studied and the governing equations are solved using a perturbation method in conjunction with complex Fourier transformation.

TL;DR: In this paper, a full coupled numerical analysis approach is presented, in which the SPH (smooth particle hydrodynamics) method is adopted to model the near field medium to cater for large deformation, while the conventional FEM is used to model intermediate and the far field soil medium and the structural response.

TL;DR: It is presented that the behavior of laminated glass beams under large deflections could be linear or nonlinear regarding the boundary conditions or constraints.

TL;DR: In this paper, a shallow-water formulation based on a variable smoothing length (SPH) method is presented, which treats the continuum as a Hamiltonian system of particles where the constitutive relationships for the materials are introduced via an internal energy term.

TL;DR: In this article, a group of monuments belonging to the Spanish historical heritage is analyzed and a wire-frame model and a photo-realistic textured model are made to carry out the analysis.

TL;DR: In this paper, a unified formulation for the electro-mechanical analysis of multilayered plates embedding piezo-layers has been proposed, which leads to a quasi-threedimensional description of global and local characteristic of static and dynamic response of pieloelectric plates.

TL;DR: In this paper, a mesh-free model is presented for active shape control as well as the dynamic response repression of the functionally graded material (FGM) plate containing distributed piezoelectric sensors and actuators.

TL;DR: In this paper, the effects of adjacent structures on the blast loads on a building in urban terrain were evaluated using empirical relationships, assuming that there are no obstacles between the charge and the target.

TL;DR: In this paper, a variant of the component-mode synthesis method is proposed to couple the continuous (rails and bridge) and discrete (train) substructures, which allows to compute simultaneously the dynamic responses of the train, rails and bridge.

TL;DR: In this paper, the dynamic frictional contact analysis of a bolted joint under harmonic loading is investigated by the finite element method and then the detailed finite element model is replaced by a number of Jenkins elements and the Bouc-Wen model by fitting the hysteresis loops produced by the FEM method.