Showing papers in "International Journal of Mechanical Sciences in 1989"
••
TL;DR: In this paper, the elastic buckling, plastic yield and brittle fracture of cellular solids under multiaxial stresses were modeled to develop equations describing their failure surfaces, and the models were compared to data in the following companion, companion, paper.
346 citations
••
TL;DR: In this paper, the failure of foams by elastic buckling and plastic yielding was modeled and compared to the results of the previous companion paper, which described the main features of the multiaxial behaviour of foam well.
194 citations
••
TL;DR: In this paper, a finite element modeling (FEM) program was formulated to simulate a general three-dimensional sheet stretching operation, based on an anisotropic, rigid-viscoplastic material model and utilizes triangular, plane stress elements incorporating a membrane approximation.
91 citations
••
TL;DR: In this article, the authors derived a pressure distribution for axisymmetric contacts involving thin layers bonded and unbonded to a rigid foundation and indented by a frictionless rigid sphere.
72 citations
••
TL;DR: In this article, a biaxial-stress model for the same problem was developed, which takes into account the effect of the stress in the axial direction of the tube.
60 citations
••
TL;DR: In this article, the effect of shear deformation on the bending moment and shear force distributions of a plate on a Winkler foundation is investigated. But the main difference between Mindlin's plate theory and classical thin plate theory is that the plates are simply supported on two opposite edges and the other two edges may be arbitrarily restrained.
53 citations
••
TL;DR: In this paper, a finite element analysis is made for steady-state three-dimensional extrusion of non-circular sections such as elliptic and clover-leaf sections through curved dies.
52 citations
••
TL;DR: In this article, a 2008-T4 sheet sample has been characterized and its mechanical behavior and formability have been modeled and a phenomenological constitutive model of anisotropic mechanical behavior was used to predict the directionality of strength, plastic strain ratio (R ) and shear strain ratio(ρ) values.
52 citations
••
TL;DR: In this paper, the aerodynamic performance of a version of the Wells turbine modified such that its rotor blades can be set at a varying angle has been investigated and the results show that the modified turbine can provide a way of increasing the amount of energy produced from ocean waves by efficiently phase controlling an oscillating water column type of device.
45 citations
••
TL;DR: In this article, a unified approach for the analysis of the finite static expansion of a spherical or cylindrical cavity in an indefinite elastic-perfectly plastic medium is presented with an arbitrary degree of non-associativity of the volumetric dilatational component of the plastic flow.
45 citations
••
TL;DR: In this paper, a model is developed to investigate the steady-state solutions of a turning snow ski, where two types of forces are assumed along the ski bottom: skidding forces and carving forces.
••
TL;DR: In this paper, the expressions for the effective stresses and the effective strain rates for all five special cases (one of them proposed by Hosford) of Hill's yield theory for sheet metal forming are presented.
••
TL;DR: In this paper, the authors proposed a theory for sandwich beams with relatively thick facings and moderately stiff cores of either bimodular material (which has different elastic moduli in tension and compression) or ordinary materials and compared it with the classical sandwich theory, which is shown to be unconservative in its predictions of both deflections and maximum shear stresses.
••
TL;DR: In this paper, an acoustic emission and force-based sensor fusion system involving pattern recognition analysis has been used to detect tool breakage, chip form and a threshold level of tool flank wear in turning.
••
TL;DR: In this article, the stresses and deformations in an anisotropic half-space indented by a flat punch are calculated for material parameters that characterize a transversely crushed ductile honeycomb.
••
TL;DR: In this paper, two boundary element solution algorithms are used for solving a range of elastoplastic and thermoplastic problems for axisymmetric, two-and three-dimensional analyses.
••
TL;DR: In this paper, the authors investigate the behavior of the flow emerging from perforated plates in relation to the measuring locations and geometry of the perforations. But their main results are static pressures, velocity distributions and flow angles at the rear side of the plates where jets occur.
••
TL;DR: In this paper, the authors show a variation of the shear stress at both surfaces of contact accompanied by a change of sign at the neutral point, and the extent of the cross shear zone increased with the increase of speed mismatch.
••
TL;DR: In this article, analytical solutions of the classical, first-order and third-order laminate plate theories are used to study the transient response of antisymmetric cross-ply simply supported rectangular plates.
••
TL;DR: In this article, fracture nucleation and growth in explosively expanded ductile steel cylinders were examined for a range of expansion rates, and the experimental data indicated that an extended Taylor's theory describes the environment for fracture development.
••
TL;DR: In this article, the general form of the equilibrium equations and strain-displacement relations for spatial rods are derived and, by considering the classical adjacent equilibrium position method, the general stability equations for spatial rod are then obtained.
••
TL;DR: In this article, numerical solutions of axisymmetric sheet stretching employing an experimentally determined stress-strain curve and measured overall coefficient of friction along the punch-sheet interface are presented.
••
TL;DR: In this article, the effects of plate slenderness and stiffener depth on the full-range response of mild steel plates subjected to uniform pressure were investigated and it was shown that the stiffener acts as a "stress raiser" which lowers the first yield pressure and promotes the formation of a collapse mechanism.
••
TL;DR: In this paper, a finite element formulation for simulating high speed rolling is presented, which does not require the assemblage and inversion of a global stiffness matrix and can be solved node-by-node with explicit time integration.
••
TL;DR: In this paper, a numerical method for modeling plane strain rolling based on the use of dynamic relaxation (DR) is examined, which is based on Newton's second law of motion and quasi-static response is obtained by applying suitable damping.
••
TL;DR: In this paper, the problem of a thin elastic ring subjected to a radially directed point load and contained within a smooth contracting cavity is considered, and numerical results are presented for both contractions and recessions of the wall of the cavity.
••
TL;DR: In this article, the authors investigated the phenomenon of buckle propagation in a thin-walled pipe caused by external pressure under steady-state conditions and showed that the transition length is proportional to radius 3 2 /( thickness 1 2 ).
••
TL;DR: In this paper, a two-dimensional fretting fatigue problem involving normal and tangential loading of dissimilar elastic bodies in contact is analyzed and the effect of the interaction between the normal and shear stresses due to the mismatch in elastic constants is quantified by comparing the present rigid-elastic numerical solution (extreme case) to the Cattaneo-Mindlin closed form solution for elastically identical materials.
••
TL;DR: In this article, a number of isotropic yield criteria from the viewpoint of concavity limitations are examined, and the inner and outer bounds of the loci are defined.
••
TL;DR: In this paper, a variational formulation is derived for the incremental analysis of the nonsteady large deformation of normal anisotropic rigid-plastic sheet metal obeying Hill's new yield criterion.