Showing papers in "International Journal of Mechanical Sciences in 2001"

TL;DR: In this paper, the authors investigated the effect of specimen size (relative to the cell size) on selected mechanical properties of aluminum foams and provided a physical basis for understanding size effects in metallic foams.

TL;DR: In this article, a total of 70 quasi-static tests were conducted on circular 6060 aluminium tubes in the T5, as-received condition and the average crush force, FAV, was non-dimensionalised and an empirical formula established as FAV/MP=72.3(D/t)0.32.

TL;DR: In this article, the results of cyclic tensile tests on superelastic NiTi shape memory alloy (SMA) wires are presented and discussed, with the scope of verifying the suitability of SMA wires as kernel components for seismic protection devices.

TL;DR: In this paper, size effects for the modulus and strength of hexagonal honeycombs under uniaxial and shear loadings were analyzed using finite element analysis and extrapolated to foams.

TL;DR: In this paper, a functional analysis of the non-uniform heat partition fraction along the tool-chip interface along with the temperature rise distribution for metal cutting has been presented for two cases of machining, namely, conventional machining of steel with a carbide tool at high Peclet number ( N Pe ≈5-20) and ultraprecision machining with a single-crystal diamond tool at low Pecle number (N Pe −0.5).

TL;DR: Komanduri et al. as mentioned in this paper presented a thermal model of the metal cutting process with the combined effect of shear plane heat source in the primary shear zone and frictional heat source at the tool-chip interface.

TL;DR: In this paper, the authors performed simulations of the tensile deformation of cubic cubic metals and found that the strain to fracture is lower with the BCC materials than the FCC materials and that the radius of the neck increases with an increase in the deformation and decreases as the ductility of the material decreases.

TL;DR: In this article, the authors investigated the plastic deformation in mono-crystalline silicon under complex loading conditions and found that the mechanism of plasticity in silicon is complex and depends on loading conditions, involving dislocations, phase transformations and chemical reactions.

TL;DR: In this article, the authors investigated the collapse loads of sandwich beams with three different collapse modes: face yield, indentation and core shear, with the active mechanism depending upon the choice of geometry and material properties.

TL;DR: In this paper, a large experimental test program and numerical simulations of several specimens of nickel-titanium shape memory alloy (SMA) has been conducted in view of their possible use as kernel components for seismic protection devices.

TL;DR: In this article, the discrete singular convolution algorithm for vibration analysis of rectangular plates with mixed boundary conditions is introduced, and a unified scheme is proposed for the treatment of simply supported, clamped and transversely supported boundary conditions.

TL;DR: In this paper, the authors examined the sensitivity of wavelet technique in the detection of cracks in beam structures, and the effects of different crack characteristics, boundary conditions, and wavelet functions employed are investigated.

TL;DR: In this article, the performance in axial compression of square aluminium columns with aluminium foam filler has been assessed based upon existing design formulas for average crush force, maximum force and effective crushing distance.

TL;DR: In this paper, the bending performance of sandwich construction with thin cellular metal cores has been measured and simulated, and a mechanism map has been generated to characterize the predominant failure phenomena based upon collapse load criteria for face yielding, core shear and indentation.

TL;DR: In this article, the effects of chirality in elastic materials described by a generalized continuum representation, specifically Cosserat elasticity, are investigated and it is shown that a chiral plate bent to hyperbolic shape exhibits size effects from the characteristic length, and a shear force from the Chirality.

TL;DR: In this paper, a dynamic surface topography model is proposed to predict the materials induced vibration and its effect on the surface generation in ultra-precision machining, taking into account the effect of machining parameters, the tool geometry, the relative tool-work motion as well as the crystallographic orientation of the materials being cut.

TL;DR: In this paper, a universal slip-line model and the corresponding hodograph for two-dimensional machining which can account for chip curl and chip back-flow when machining with a restricted contact tool are presented.

TL;DR: In this article, the influence of hygrothermal effects on the postbuckling of shear deformable laminated plates subjected to a uniaxial compression was investigated using a micro-to-macro-mechanical analytical model.

TL;DR: In this paper, the free vibration analysis of conical conical shells with variable stiffness is presented using the method of differential quadrature (DQ), where stiffness coefficients are assumed to be functions of the circumferential coordinate that may be more close to the realistic applications.

TL;DR: In this paper, an efficient finite element procedure was developed to calculate the temperatures and stresses arising due to a moving source of heat, which was applied to calculating the thermal stresses produced in hardened steels during grinding.

TL;DR: In this paper, a simplified finite element method called inverse approach (IA) has been developed for sheet forming analysis with the consideration of the drawbead restraining forces, which is combined with a mathematical programming algorithm to optimize the restraining forces and then to design the draw beads.

TL;DR: In this paper, a new incremental method and hardening model is proposed based on the foundations for isotropic hardening and kinematic hardening, Mroz multiple surface model, plane strain assumptions, and experimental observations.

TL;DR: In this article, the numerical results obtained by a finite element analysis in the case of sheet metal blanking process are compared with the experimental ones to verify the validity of Gurson and Lemaitre damage models in describing the initiation and propagation of cracks during the process evolution.

TL;DR: In this article, the effects of side to thickness ratio and variation in standard deviation of the material properties have been investigated for cross-ply symmetric and anti-symmetric laminates.

TL;DR: In this article, a constitutive equation accounting for strain rate, temperature and applied stress system dependencies of strain-induced martensitic transformation is given, and a series of computational prediction of monotonic and cyclic deformation behavior including tension, compression and shearing of typical 304 austenitic stainless steel, have been performed under different environmental temperatures from 77 to 353 K.

TL;DR: In this article, a more realistic numerical simulation for the roller straightening process of rails is presented, which considers the longitudinal movement of the rail through the straightener and Chaboche's multiple component nonlinear kinematic hardening model is used to account for the plastic behavior of rail steel.

TL;DR: In this article, the authors examined sharp contact problems theoretically and numerically using the finite element method and the theoretical as well as the numerical results are compared with relevant experimental ones taken from the literature, which are directly applicable to material characterization or measurements of residual mechanical fields by sharp indentation tests, but also for situations such as contact in gears or in electronic devices.

TL;DR: In this article, a new approach for modelling and simulation of the cutting forces in helical end milling processes is presented, in which the machining characteristic factors are predicted from input data of fundamental workpiece material properties, tool geometry and cutting conditions.