Showing papers in "International Journal of Mechanical Sciences in 1999"

TL;DR: In this article, a study on the vibration of cylindrical shells made of a functionally gradient material (FGM) composed of stainless steel and nickel is presented, the objective is to study the natural frequencies, the influence of constituent volume fractions and the effects of configurations of the constituent materials on the frequencies.

TL;DR: In this article, an experimental investigation was carried out to study the behavior of square aluminium extrusions filled with aluminium foam under quasi-static loading conditions, and simple relations between dimensionless numbers governing the influence of the foam on the characteristics of the crush problem were identified.

TL;DR: In this article, a new empirical equation is suggested for relating the structural effectiveness to the structural density of top-hat and double-hat sections, and several post-test collapse modes were identified for the structures and the associated energy-absorbing characteristics have been examined and compared with previous tests.

TL;DR: In this paper, the Young's moduli, elastic buckling strength and the plastic collapse strength of regular honeycombs with defects consisting of missing cells in the structure were analyzed using the finite element method.

TL;DR: In this article, an accurate and general strand model using the finite element method (FEM) is presented, which is capable of taking into account all the above effects and has been successfully used to predict the global behaviour of simple straight wire rope strand as well as the stress distribution within the wires under axial loads (tensile and torsional).

TL;DR: In this paper, a theoretical analysis using superfolding elements was carried out to determine the mean crushing loads for the quasi-static axial loading of top-hat and double-hat, spot-welded mild steel sections.

TL;DR: In this paper, the effect of low-density metal filler, such as aluminum foam or honeycomb, on the bending collapse resistance of thin-walled prismatic columns was studied and closed-formed solutions for the bending-rotation characteristics were constructed in terms of the geometrical parameters and the filler strength.

TL;DR: In this article, the authors examined the collapse of tubes in the multi-lobe mode in an attempt to evaluate the crushing load using the unique factor known as the eccentricity factor.

TL;DR: In this paper, a numerical analysis of the axisymmetric free vibration of moderately thick annular plates using the differential quadrature method (DQM) is presented, and the convergence characteristics of the method for thick plate eigenvalue problems are investigated.

TL;DR: In this article, a new blank design method has been suggested as an effective tool combining the ideal forming theory with a deformation path iteration method based on FE analysis, which consists of two stages: the initial blank design stage and the optimization stage.

TL;DR: In this paper, the authors used the maximum shear stress criterion to predict fracture limit curves from uniaxial tensile data and plane strain limit at fracture, and incorporated such a fracture criterion into FE simulations of sheet stampings for prediction of fracture.

TL;DR: In this paper, the authors introduced the concept of a differential transform to solve the free vibration problems of a rotating twisted Timoshenko beam under axial loading and derived a set of difference equations.

TL;DR: In this paper, the in-plane vibration of a slider-mass which is driven around the surface of a flexible disc, and the transverse vibration of the disc, are investigated, showing that normal pressure and rotating speed can drive the system into instability.

TL;DR: In this paper, the hierarchical finite element (HFEM) and the harmonic balance methods are applied to analyze geometrically nonlinear vibration of thin, isotropic plates, and the stability of the obtained solutions is investigated by studying the evolution of perturbations to the solutions.

TL;DR: In this paper, the authors examined the elastoplastic buckling of a rectangular plate, with various boundary conditions, under uniform compression combined with uniform tension (or compression) in the perpendicular direction, based on the standard linear buckling equations and material behaviour is modelled by the small strain J2 flow and deformation theories of plasticity.

TL;DR: In this article, a polynomial stress-strain relation is proposed for rotating disks with non-linear strain hardening materials and a computing method for such rotating solid disks is developed and the approximate analytical solution is obtained.

TL;DR: In this article, the stiffness matrix for cylindrical helical springs with twelve degrees of freedom was obtained exactly by the transfer matrix method and the efficacious numerical algorithm was employed for the computation of the element transfer matrix.

TL;DR: In this article, the analysis of free vibration of open, laminated composite, circular cylindrical panels having a rectangular plan-form and all their edges free of external tractions is presented.

TL;DR: In this paper, the authors investigate the pressure rise in the ink flow channel and the ink droplet formation process of a piezoelectric printhead after an electrical pulse is applied to the printhead.

TL;DR: In this paper, an estimation of characteristic behavior in a compression simulation with semi-solid materials (SSMs) is made using the finite element method (FEM) and a proposed, new stress-strain relationship formulation with a separation coefficient.

TL;DR: In this paper, the effect of a rail joint in a continuously welded rail (CWR) track caused by a vertical wheel load is analyzed. And the obtained test results are then compared with the corresponding analytical results.

TL;DR: In this article, an incremental elasto-plastic finite element method based on an updated Lagrangian formulation in which a sliding-sticking friction mode is specially considered was proposed to predict the buckling process and load-deflection curves for energy dissipation capacity during the design stage, before trials.

TL;DR: In this article, a mathematical model for a cylindrical shell with a partially constrained layer damping (CLD) treatment is presented, and the effects of treatment length, constraining layer (CL) thickness and stiffness, and of viscoelastic material core (VEM) thickness are discussed.

TL;DR: In this paper, a new model based on rigid post-fractured behavior, utilizing the post fracture properties of concrete at the rough crack interfaces that are developed, is presented.

TL;DR: In this paper, a thermomechanical constitutive model for Shape Memory Alloy (SMA) actuators, based on previous work by Boyd and Lagoudas (Proceedings of the 4th International Symposium on Plasticity and its Current Applications, Baltimore, MD, 19−23 July, 1993) is developed.

TL;DR: In this paper, the free vibration of a simply supported, transversely isotropic cylindrical shell filled with compressible fluid is exactly analyzed based on three-dimensional elasticity.

TL;DR: In this paper, a powder compact and an insert were encapsulated by a stainless steel container and hot isostatically pressed to produce an axisymmetric near-net shape part.

TL;DR: In this article, a new yield criterion for metal powder compaction based on continuum mechanics has been proposed, which includes three parameters to characterize the geometric hardening of powder compact and strain hardness of incompressible metal matrix.

TL;DR: In this paper, a procedure to design a constant thickness composite disc of uniform strength by radially tailoring the anisotropic elastic constants is proposed and compared with FEM calculations for two cases of radially varying anisotropy and for an isotropic disc with variable modulus.

TL;DR: In this paper, a 3D elasto-plastic finite element model was used for the analysis of contact stresses at the rail-wheel interaction location and the size and shape of the plastic zone at the contact region.