Showing papers in "International Journal of Mechanical Sciences in 1967"

TL;DR: In this paper, a theoretical analysis of the process of the generation of the groove based on anisotropic plasticity theory is presented, and the system of equations derived was solved numerically with the aid of a computer, which enabled the limiting strain of the sheet metal to be determined as a function of the material.

TL;DR: In this article, a method for the incremental elastic-plastic analysis of two-dimensional stress systems (plane stress, plane strain and axisymmetrically loaded body of revolution) is described.

TL;DR: In this article, two series of epoxy composites, filled and porous, were tested in compression and tension, covering the volumetric filler-content range up to 52 per cent and void-ratio ranges up to 70 per cent.

TL;DR: The contribution of micro-slip to the overall rolling friction is computed and shown, in most circumstances, to be small as discussed by the authors, and the coefficient of friction at the interface of the rollers is calculated by using a numerical method.

TL;DR: In this article, the authors developed a simple means of predicting strains in the deforming cylinder from a series of curves, and compared the results with some experimental results reported by others.

TL;DR: In this paper, both internal and external damping forces are introduced into equations for free transverse vibration of beams in air, and solutions to these equations are obtained by energy methods and digital computer.

TL;DR: In this article, experiments carried out in fully developed unidirectional turbulent flow in three smooth concentric annuli were carried out and the velocity profiles were measured in detail, and it was found that the radius of maximum velocity for turbulent flow is different from its value for laminar flow.

TL;DR: In this article, a general theory for the initial elastic post-buckling of structural systems with two degrees of freedom, whose postbuckling equilibrium configurations are symmetric, is developed in generalized co-ordinates.

TL;DR: In this article, a simple method is presented for estimating the combined influence of strain-hardening and strain-rate sensitivity on the permanent deformation of rigid-plastic structures loaded dynamically.

TL;DR: In this article, an improved ring finite element analysis for shells of revolution, obtained by extending the polynomials representing the displacements, is presented, and the mass and stiffness matrices and their derivation for the elements with extended displacement functions are given.

TL;DR: In this article, an approximate analysis of the gravity flow of a cohesionless bulk solid in a vertical converging channel is carried out by a perturbation method, where the small parameter used in the expansion procedure is related to the angle of friction between the flowing solid and the channel wall.

TL;DR: In this article, a means of obtaining the effects of creep in structures by an analysis similar to the corresponding elastic one is described, where the starting point in the analysis is the elastic solution so that a single computer program can be written to evaluate the elastic and creep performances of the part under investigation.

TL;DR: In this article, the authors used the displacement fields used in finite element representations to obtain upper bounds to the limit loads of plane stress problems, which are readily minimized and provide good estimates of the collapse load.

TL;DR: In this article, an exact solution for non-linear, flexural, asymmetric waves in a spinning membrane or a thin disk is obtained for harmonic waves in the form of harmonic waves, in which a membrane spinning with no nodal circles and two nodal diameters is shown.

TL;DR: In this paper, a pneumatic tire rolling and accelerating on a wet road surface is simulated by a block of rubber slipping on a two-dimensional sinusoidal surface covered with a thin water film.

TL;DR: In this article, the steady-state creep of a thick-walled orthotropic cylinder subjected to internal pressure was derived by the use of a piecewise linear model, and the results indicated that creep anisotropy has a significant effect on the cylinder behavior particularly in terms of creep rates which may differ by an order of magnitude compared to an isotropic analysis.

TL;DR: In this article, a model of white plasticine was used to study the dynamic deformation of hot metals and the relation between deformation energy/unit volume, E V, and natural strain, e, is shown to be a power law of the form E V = C em.

TL;DR: In this article, controlled collisions between individual saturated water drops in a steam atmosphere saturated at 14·7 lbf/in2 abs are analyzed for the following conditions: equalsized drops 500-1200 μ dia. with equal initial velocities 150-330 cm/s and varying trajectory angle and collision phase angle.

TL;DR: In this paper, a graphical method of obtaining kinematically admissible velocity fields is proposed which can be applied to a wide range of axi-symmetric problems in which solid billets are used.

TL;DR: In this article, the authors investigated the relationship between the maximum quasi-static blanking force or energy required for both quasistatic and dynamic blanking with the temperature of the materials and demonstrated that strain-rate sensitivities are not very great at temperatures below the recrystallization temperature.

TL;DR: In this article, the small-deflection, static bending of a uniformly loaded, circular plate in which the boundary conditions are not constant along the entire edge is investigated, and the first problem is that of a plate which is simply supported along certain parts of its edge and clamped on the remainder.

TL;DR: For a nearly flat indenter the "dead metal" cap solution is shown to require a smaller indentation load than that solution which involves material sliding over the die face even when the coefficient of friction in the latter case is much smaller than in the former.

TL;DR: In this article, an expression for the surface displacement of a semi-infinite solid which is heated uniformly over a circular area after time t = 0 is derived, where a is the radius of the heated area.

TL;DR: In this article, the authors investigated the stability of a curved beam hinged to fixed supports at its ends and subjected to equal but opposite end moments, and found that the linear theory predicts the buckling moments accurately for beams having a rise span ratio λ 2l less than 0·13.

TL;DR: In this paper, the authors reviewed the literature on the anticlastic curvature developed by beams and plates when subject to elastic and plastic bending, and reported some experimental investigations into the antic-lastic curve of plastically bent plates of varying widths and constant thickness for two materials, a mild steel and an aluminium alloy.

TL;DR: In this article, the full nonlinear equations of motion of a bifilar pendulum are derived without the aid of simplifying assumptions about the geometry of the suspension or the inertia properties of the suspended body.

TL;DR: In this article, the steady-state forced vibrational behavior of an undamped isolating system using non-linear springs with cubic, hardening, symmetrical, stress-strain characteristics is studied theoretically, and experimentally using an analogue computer.

TL;DR: In this article, a detailed investigation into the stress concentration factors arising in the torsion of grooved shafts is described, and the results were obtained on an electrical analogue, which solves the finite difference form of the governing differential equation.

TL;DR: In this paper, the authors investigated the stability of small initial rise curved beams with a central concentrated loading and concluded that buckling cannot occur if the initial rise span ratio λ 2l is larger than the critical load.

TL;DR: In this article, an approximate expression for the pressure distribution in radial laminar flow between parallel plates is obtained by using the energy integral method, which is compared with those obtained by the momentum integral method and the more exact method of series solution of the Navier-Stokes equations.