Showing papers in "International Journal of Mechanical Sciences in 2009"

TL;DR: In this article, the postbuckling response of a shear deformable functionally graded cylindrical shell of finite length embedded in a large outer elastic medium and subjected to axial compressive loads in thermal environments is studied.

TL;DR: In this article, the springback of a simple U-bend has been calculated for one of the materials, and from the results of these simulations some conclusions regarding the choice of hardening law are drawn.

TL;DR: In this article, a simply supported, rectangular, functionally graded material plate subjected to a transverse uniform load and a temperature field, and resting on a two-parameter (Pasternak model) elastic foundation is presented.

TL;DR: In this article, the static response and free vibration of metal and ceramic functionally graded shells are analyzed using the element-free kp-Ritz method, where the material properties are assumed to vary continuously along the depth direction.

TL;DR: In this paper, the nonlinear response of functionally graded ceramic-metal shell panels under mechanical and thermal loading is studied, in which the geometric nonlinearity takes the form of von Karman strains.

TL;DR: Based on the nonlinear large deflection theory of cylindrical shells as well as the Donnell assumptions, the authors presents nonlinear buckling and postbuckling analyses for axially compressed functionally graded cylinders by using the Ritz energy method and the non linear strain-displacement relations of large deformation.

TL;DR: In this article, a simplified static procedure is proposed for analyzing and designing composite beams with interlayer slip, parallel to the Eurocode 5 method, but it is general in nature and can be a...

TL;DR: In this paper, an analytical approach for crack identification procedure in uniform beams with an open edge crack, based on bending vibration measurements, is developed, where the cracked beam is modeled as two segments connected by a rotational mass-less linear elastic spring with sectional flexibility, and each segment of the continuous beam is assumed to obey Timoshenko beam theory.

TL;DR: In this article, the exact solutions of natural frequencies and mode shapes can be obtained when at least two opposite plate edges have either type of the simply-supported conditions, and some of the exact solution were not available before.

TL;DR: A mesh-free Galerkin method for the free vibration analysis of unstiffened and stiffened corrugated plates is introduced in this article, in which the corrugation plates are simulated with an equivalent orthotropic plate model, and the stiffness matrix of the whole structure is then derived.

TL;DR: In this article, the partial differential equations and general solutions for the deflection and internal actions and the pertaining consistent boundary conditions are presented for composite Euler-Bernoulli members with interlayer slip subjected to general dynamic loading.

TL;DR: In this article, the structural stability of thin-walled steel cylinders surrounded by an elastic medium, subjected to uniform external pressure, is investigated in terms of the initial out-of-roundness of the cylinder, the initial gap between the cylinder and the medium, and the stiffness of the surrounding medium.

TL;DR: In this article, the influence of the database used for identification, by using either bending-unbending or simple shear for strain path reversal, was investigated both on an aluminum alloy and a TRIP steel.

TL;DR: In this paper, a modified vertex theory is proposed for localized necking of rate-dependent sheet metals. But the vertex theory does not consider the effect of the rate on the formation limit diagrams.

TL;DR: In this paper, deformation mechanisms are systematically investigated and failure analyses are conducted for the lattice cylindrical shells with various core topologies, and analytical models are proposed to predict the axial stiffness, critical elastic buckling load or effective yield strength of these shells.

TL;DR: In this article, a new type of structure, called retractable tube, is introduced to overcome the drawbacks of two traditional types of invertubes, and the inversion processes of the proposed tubes under axial compression are simulated by using the non-linear finite element code LS-DYNA.

TL;DR: In this paper, a closed-form solution for the compliance and the energy release rate of the updated version of the mode-III split-cantilever beam specimen is developed incorporating linear beam theories.

TL;DR: In this paper, the authors compare several plastic yield criteria to show their relevance on the prediction of springback behavior for AA5754-0 aluminum alloy, and show that the difference between the ring diameters, before and after splitting, gives a direct measure of the springback phenomenon.

TL;DR: In this article, a new tool design is proposed for the hot press forming process, and an optimized heat treatment condition is determined by studying two frequently utilized heat treatments: austempering and quenching with tempering heat treatments.

TL;DR: In this article, a user-defined material subroutine was developed based on Hill's quadratic yield function and mixed isotropic-nonlinear kinematic hardening models for both ABAQUS-Explicit (VUMAT) and ABAQUUS-Standard (UMAT), which is able to predict the springback significantly more accurately than the IH model.

TL;DR: In this article, the effect of internal pressure on energy absorption of thin-walled structures was investigated, and three groups of circular tubes with radius/thickness ratio R/t=120-200 were axially compressed under different pressurizing conditions.

TL;DR: In this article, the authors described the mode-coupling-type squeal mechanism in a disc brake system and obtained the mode shapes of a disc and a brake pad (an annular sector plate) using the component eigenvalue analysis and the Rayleigh-Ritz method, respectively.

TL;DR: In this paper, the dynamic instability of a car brake system with a rotating disc in contact with two stationary pads is modeled as a hat-disc shape structure by the finite element method.

TL;DR: In this paper, a general analytical model based on shear-deformable beam theory has been developed to study the flexural-torsional coupled vibration and buckling of thin-walled open section composite beams with arbitrary lay-ups.

TL;DR: In this paper, the authors describe the behavior of actuators under load capacity with experimental validation, characterizing the critical factors that cause the collapse and proposing useful design criterions.

TL;DR: In this article, the effect of random variations in material properties of laminated sandwich plates on the transverse deflections is investigated, where the lamina properties are considered as basic random variables while the other system properties are assumed to be deterministic.

TL;DR: In this article, an analysis is presented to determine the distribution of a residual stress field from a limited incomplete set of measurements obtained from shot-peened round steel bars using an Airy stress function as the primary unknown.

TL;DR: In this article, a Lagrangian-extended finite element (FE) method is presented in modeling large-plasticity deformations and contact problems, where the material interfaces are represented independent of the FE mesh and the process is accomplished by integrating enriched elements with a larger number of Gauss points.

TL;DR: In this paper, a rigid-perfectly plastic model is adopted to predict the dynamic response of fully clamped sandwich and monolithic beams subjected to localized impulse, and tighter bounds of the solutions for sandwich beams are derived by using the inscribed and circumscribed squares of a new yield criterion including the core effect.

TL;DR: A simple discontinuous upper bound limit analysis approach with sequential linear programming mesh adaptation is presented, allowing to treat the non-linear programming (NLP) problem with consolidated linear programming (LP) routines.