Showing papers in "International Journal of Mechanical Sciences in 2005"

TL;DR: In this paper, a comparative study of seven fracture criteria that are included in libraries of material models of non-linear finite element codes is presented, and a detailed calibration procedure for each criterion is presented in the present paper.

TL;DR: In this article, the authors extended the mechanics of dynamically loaded sandwich plates to address the problem of the minimum weight design of plates of given span that must sustain a uniformly distributed impulsive wave in air or water environments.

TL;DR: In this article, an experimental study on the impact response of metallic cellular materials, i.e., aluminium honeycombs of various cell sizes and wall thicknesses, aluminium foams made from two different manufacturing processes (IFAM and Cymat), as well as hollow sphere agglomerates (nickel and iron), is presented.

TL;DR: In this paper, an analytical, as well as experimental approach to the crack detection in cantilever beams by vibration analysis is established, which is based on measured frequencies and mode shapes of the beam.

TL;DR: In this paper, a thermal elastic-viscoplastic finite element model is used to evaluate the residual stresses remaining in a machined component, and an improvement in the accuracy of the predicted residual stresses is obtained by using a modified Johnson-Cook material model augmented by a linearly elastic component.

TL;DR: In this article, a numerical simulation was performed using LS-DYNA3D transient dynamic finite element analysis code for calculating contact forces during impact along with a failure analysis for predicting the threshold of impact damage and initiation of delaminations.

TL;DR: In this article, an analytical solution is provided for the postbuckling behavior of moderately thick plates and shallow shells made of functionally graded materials (FGMs) under edge compressive loads and a temperature field.

TL;DR: In this article, the vibration analysis of cross-ply laminated beams subjected to different sets of boundary conditions is studied, and the analysis is based on a three-degree-of-freedom shear deformable beam theory.

TL;DR: In this article, the authors investigated the stochastic bending response of moderately thick, compositionally graded plates with uncertainties of low variability and subjected to lateral load and uniform temperature change and found that the response sensitivity of the plate is very much dependent on the material composition.

TL;DR: In this paper, a dislocation-based internal state variable (ISV) model was used to characterize material behavior in forming and machining, in which the evolution equations enable the prediction of strain rate history and temperature history effects.

TL;DR: In this article, a model is presented to prevent the interpenetration phenomenon at the interface between a particle and the surrounding material, which can be used together with a given linear or nonlinear interface model to calculate the stress field in particle-reinforced composites.

TL;DR: In this paper, a solution method for the one-dimensional transient temperature and thermal stress fields in non-homogeneous materials is established, where finite element method is used to space discretize, which results in a system of first-order differential equations.

TL;DR: In this article, a procedure for determining the Johnson-Cook constitutive and simplified, failure model parameters for three materials with specific importance in the aerospace industry, aluminum 6061-T6, titanium Ti-6Al-4V and austenitic, nitrogen-strengthened, stainless steel (Nitronic 33) is proposed.

TL;DR: In this paper, the authors proposed a rescaling of the stresses by a factor so that the scaled stresses have the same relationship to a single forming limit curve in a 2D plot in stress-space as the actual stresses have to the true anisotropic forming limit in 3D space.

TL;DR: In this paper, the structural performance of aluminium alloy foams has been investigated under both static and dynamic compression loads, and three foam typologies (M-PORE, CYMAT, SCHUNK) in a wide range of density have been analyzed.

TL;DR: In this paper, the authors argue that the single-shear plane model is inadequate to the real cutting process, and they conclude that any progress in the prediction ability of the metal cutting theory cannot be achieved if the single shear planes model is still in the very core of this theory.

TL;DR: In this paper, the thermomechanical approach is used to construct models which satisfy the fundamental laws of thermodynamics and have definite physical interpretations in terms of energy storage and dissipation.

TL;DR: In this article, the results of tests carried out to measure proximal end and distal end loads during dynamic crushing of oak along the grain over a velocity range of 20-260m/s are presented.

TL;DR: In this article, the authors investigated the whirl speed, critical speed and mode shape of a spinning beam in six general boundary conditions, and showed that the system's unbalanced response can be expressed analytically by these finite precessional modes and corresponding generalized coordinates.

TL;DR: In this article, the residual strength and stiffness of impacted laminates decrease with increasing impact damage area, and the residual mechanical properties can be approximated by a linear relationship with a single damage severity parameter Q, where Q is a function of incident impact energy, impactor tip radius and laminate thickness.

TL;DR: In this article, the effect of dry friction on the damping response of frictional joint interfaces was evaluated using the finite element method, and the authors found that dry friction can significantly affect the performance of the micro-slip phenomenon.

TL;DR: In this paper, the theoretical treatment of transient thermoelastic problem involving a functionally graded rectangular plate due to non-uniform heat supply was studied. But the authors only considered the case of a simple supported rectangular plate and did not consider the nonhomogeneity of the material.

TL;DR: In this article, the wrinkling behavior of 6111-T4 aluminum alloys during sheet hydroforming process was numerically and experimentally investigated, and an optimum fluid pressure profile generated by the finite element method, using Barlat's anisotropic yield function, was successfully applied to make the deep-drawn hemispherical cup without tearing and with minimal wrinkling in the flange area.

TL;DR: In this article, the nonlinear vibration and dynamic response of simply supported shear deformable cross-ply laminated plates with piezoelectric actuators subjected to mechanical, electrical and thermal loads are investigated.

TL;DR: In this paper, a new slip-line model for machining with BUE formation and its associated hodograph is proposed, consisting of four slipline sub-regions, which meet both the stress equilibrium and velocity requirements of material flow.

TL;DR: In this paper, X-and T-branch components were formed using a tube hydroforming machine and experimental load paths (forming pressure and axial feed) were obtained for the processes via a data acquisition system integrated with the machine.

TL;DR: In this paper, the compressive properties of the porous coppers have been investigated, and it was shown that the modulus is insensitive to powder size and the yield strength shows a linear relationship with porosity, and is found to follow a Hall-Petch relationship with powder size.

TL;DR: An elastic-plastic constitutive model for transversely isotropic compressible solids (foams) has been developed in this paper, where a quadratic yield surface with four parameters and one hardening function is proposed.

TL;DR: In this article, the compressive properties of the porous coppers have been investigated, and it was shown that the modulus is insensitive to powder size and the yield strength shows a linear relationship with porosity, and is found to follow a Hall-Petch relationship with powder size.

TL;DR: In this paper, an approximate analytical approach to the torsion of thin-walled beams of open cross-section with influence of shear is presented, and the stresses and displacements are obtained in the closed analytical form.