Showing papers in "Finite Elements in Analysis and Design in 2007"

TL;DR: In this paper, a mesh-independency filter using nodal variables is introduced to determine the addition of elements and eliminate unnecessary structural details below a certain length scale in the design.

TL;DR: In this paper, the authors describe how the peridynamic model can also be implemented in a conventional finite element analysis (FEA) code using truss elements, and demonstrate the utility and robustness of the method for problems involving fracture, damage and penetration.

TL;DR: In this paper, Liu et al. extended the smoothed finite element method (SFEM) to a more general case, where the problem domain can be discretized by a set of polygons, each with an arbitrary number of sides.

TL;DR: In this article, the authors presented a crashworthiness design of the regular hexagonal thin-walled columns for different sectional profiles, and compared the crashworthiness merits of multiply connected (MC) sections of the singly celled configuration and the side-connected section of triply celled configurations.

TL;DR: In this article, the significance of three important process parameters namely, die radius, blank holder force and friction coefficient on the deep drawing characteristics of a stainless steel axi-symmetric cup was determined.

TL;DR: The Virtual Crack Closure Technique (VCCT) for stress intensity factor (SIF) calculations was proposed 30 years ago as mentioned in this paper and has not yet been implemented in large commercial finite element codes.

TL;DR: In this article, a micro/nano-scale computational contact mechanics model is proposed to study the adhesive contact between deformable bodies, where an interatomic interaction potential is incorporated into the framework of nonlinear continuum mechanics.

TL;DR: In this article, a modified version of the evolutionary structural optimization (ESO) procedure for its application in topology optimization of compliant mechanisms is presented. But it is not shown that an additive version of this method must be adopted in order to achieve the optimum design, since the traditional ESO method's element removal technique is not efficient in this case.

TL;DR: In this paper, a discrete singular convolution (DSC) method was proposed to obtain the frequencies and buckling loads of composite plates by using geometric transformation, the straight-sided quadrilateral domain is mapped into a square domain in the computational space using a four-node element.

TL;DR: In this article, a model for dense sands is utilized to model the effective stress response of the solid matrix appearing in the balance of linear momentum equation, where inherent inhomogeneities in the porosity field at the meso-scale are thoroughly incorporated and coupled with the macroscopic laws of mixture theory.

TL;DR: In this article, a model-based crack identification method is proposed for estimating crack location and size in shafts, where the rotor system has been modeled using finite element method of B-spline wavelet on the interval (FEM BSWI), while the crack is considered through local stiffness change.

TL;DR: In this article, a 21 degree-of-freedom element based on the FSDT was derived to study the response of unsymmetrically laminated composite structures subject to both static and dynamic problems.

TL;DR: In this paper, 3D geometry of micro-cellular carbon foam is modeled in computer aided design (CAD) environment by using special scripts written for capturing real topology of carbon foams.

TL;DR: In this paper, a locking-free strain-based finite element formulation for the numerical treatment of linear static analysis of two-layer planar composite beams with interlayer slip is proposed.

TL;DR: In this paper, the axial stiffness of a bolt is calculated based on the deformation energy of the bolt head, the engaged part, the nut and the fastened plates.

TL;DR: In this paper, a mathematical formulation for optimization based on classical performance and cost measures such as compliance and mass is given, and a comprehensive product family optimization application is discussed, where three products exposed to seven load cases each, are studied.

TL;DR: In this article, a new approach for the investigation of stress states in the asphalt-aggregate adhesive region and in the mastic of porous asphalt concrete (PAC) is presented.

TL;DR: In this paper, an extended Voronoi cell finite element model (X-VCFEM) is proposed for modeling the initiation and propagation of interfacial debonding and matrix cracking in fiber reinforced composite materials.

TL;DR: In this article, a spectral finite element method for two parallel beams connected to each other by the vertical springs uniformly distributed along the beam length is introduced, where the effects of the shear deformation and rotary inertia of the beams are accounted for.

TL;DR: In this paper, a general RUC (repeated unit cell) approach for the analysis of balloon expandable stents with various types of closed cells is presented, where the application of the unified periodic boundary conditions on the RUC model of the stent is formulated.

TL;DR: An adaptive Hexahedral mesh generation algorithm based on the conventional grid-based method and geometry-adaptive technique to generate uniformly sized or locally refined hexahedral meshes based on a set of new refinement templates.

TL;DR: In this article, a non-linear dimensional variation analysis for sheet metal assemblies is developed by using the contact finite element method and considering the friction force between the assembly surfaces, which is validated in a case study of two sheet metal parts assembly via physical experiments.

TL;DR: In this article, numerical developments performed in the finite element code ANSYS in order to produce coupled fluid-structure dynamic analysis with pressure-based formulation, using modal and spectral methods.

TL;DR: In this paper, the scaling laws for all the relevant parameters regarding the full-size rotor bearing system and its scale model were derived from the equations of motion of the last two systems.

TL;DR: In this paper, a new honeycomb based domain representation and SIGMOID material function is introduced to model continuum topology optimization domains with fixed grids. But, the authors do not address the problem of material layout determination for compliant mechanisms.

TL;DR: In this article, the authors explored the partial coverage of cylindrical shells with a constrained viscoelastic damping layer, with emphasis on examining the minimum area of coverage that will yield optimal damping.

TL;DR: An algorithm based on the element-by-element (EBE) scheme of the FEM and Jacobi pre-conditioning conjugate gradient method is introduced, including the EBE computation algorithm for boundary conditions and all kinds of loads.

TL;DR: In this article, a multi-purpose general rotation free element for the analysis of thin Kirchhoff-love type shells is presented: isoparametric displacement elements are used as basic geometrical description and to determine the membrane strains.

TL;DR: In this article, an alternative procedure for nonlinear numerical analysis of composite beams, where the partial connection between the elements is dealt with especially designed interface elements, is presented, which is an extension of a classic interface element where the relative displacements are independently interpolated on the top and bottom element edges.

TL;DR: In this paper, a unified displacement-based finite element formulation of a 4-node, 24-DOF rectangular layered plate element is developed for the nonlinear finite element analysis of thin to moderately thick isotropic plates and reinforced concrete slabs.