Simulation dynamique du voilierA sailing simulator has been developed from a new point of view. It will rather be for the sailor to use it than for the architect. One boat which characteristics were already known has been chosen.…Kostia Roncin, Jean-Michel Kobus·Feb 5, 2010SaveLearn
Rotating Electromagnetic Waves in Toroid-Shaped RegionsElectromagnetic waves, solving the full set of Maxwell equations in vacuum, are numerically computed. These waves occupy a fixed bounded region of the three dimensional space, topologically…Claudia Chinosi, Lucia Della Croce, Daniele Funaro·Feb 5, 2010SaveLearn
Thermodynamics of Extended Bodies in Special RelativityRelativistic thermodynamics is generalized to accommodate four dimensional rotation in a flat spacetime. An extended body can be in equilibrium when its each element moves along a Killing flow. There…Tadas K Nakamura·Feb 4, 2010SaveLearn
A plasticity model with yield surface distortion for non proportional loadingIn order to enhance the modeling of metallic materials behavior in non proportional loadings, a modification of the classical elastic-plastic models including distortion of the yield surface is…Marc Louis Maurice François·Feb 4, 2010SaveLearn
A new yield criterion for the concrete materialsThe proposed yield criterion depends upon two material constants and is proven to be smooth and convex under a simple condition. These properties induce a mathematical robustness that allows a…Marc Louis Maurice François·Feb 3, 2010SaveLearn
Comparison of experimental and simulation distortions of quenched C-ring test partsWe present a mathematical method for identifying, separating and quantifying the 3D significant distortions. Measurement of a gas quenched C-ring type sample is performed by a Coordinate Measuring…Nicolas Cyril, Baudouin Cyrille, Leleu Stéphane et al.·Feb 2, 2010SaveLearn
Space, Time and Coordinates in a Rotating WorldThe peculiarities of rotating frames of reference played an important role in the genesis of general relativity. Considering them, Einstein became convinced that coordinates have a different status…Dennis Dieks·Jan 31, 2010SaveLearn
Noise in the wire: the real impact of wire resistance for the Johnson (-like) noise based secure communicatorWe re-evaluate the impact of wire resistance on the noise voltage and current in the Johnson-(like)-noise based secure communicator, correcting the result presented in [Physics Letters A 359 (2006)…Laszlo B. Kish, Jacob Scheuer·Jan 30, 2010SaveLearn
Singular behaviour of the electromagnetic field (the static case revisited)The singularities of the electromagnetic field are derived to include all the point-like multipoles representing an electric charge and current distribution. Partial results obtained in a previous…Constantin Vrejoiu, Roxana Zus·Jan 23, 2010SaveLearn
Fractal design for an efficient shell strut under gentle compressive loadingBecause of Euler buckling, a simple strut of length L and Young modulus Y requires a volume of material proportional to L3 f1/2 in order to support a compressive force F, where f=F/YL2…R. S. Farr·Jan 20, 2010SaveLearn
Static deformation of heavy spring due to gravity and centrifugal forceThe static equilibrium deformation of a heavy spring due to its own weight is calculated for two cases. First for a spring hanging in a constant gravitational field, then for a spring which is at…Hanno Essen, Arne Nordmark·Jan 13, 2010SaveLearn
Une nouvelle analyse des symétries d'un matériau élastique anisotrope. Exemple d'utilisation à partir de mesures ultrasonoresThis note deals with stiffness tensors measured from anisotropic linear elastic materials, whose symmetry is unknown. Their possible symmetries (exact or approximative) are revealed by a pole figure.…Marc Louis Maurice François, Yves Berthaud, Giuseppe Geymonat·Jan 13, 2010SaveLearn
A damage model with non-convex free energy for quasi-brittle materialsA state coupling between the hydrostatic (volumetric) and deviatoric parts of the free energy is introduced in a damage mechanics model relevant for the quasi-brittle materials. It is shown that it…Marc Louis Maurice François·Jan 13, 2010SaveLearn
Comment on "Some novel delta-function identities"We show that a form for the second partial derivative of 1/r proposed by Frahm and subsequently used by other workers applies only when averaged over smooth functions. We use dyadic notation to…Jerrold Franklin·Jan 10, 2010SaveLearn
Waveguide taper engineering using coordinate transformation technologySpatial coordinate transformation is a suitable tool for the design of complex electromagnetic structures. In this paper, we define three spatial coordinate transformations which show the possibility…Paul-Henri Tichit, Shah Nawaz Burokur, Andre de Lustrac·Jan 8, 2010SaveLearn
Linear and angular momentum of electromagnetic fields generated by an arbitrary distribution of charge and current densities at restStarting from Stratton-Panofsky-Phillips-Jefimenko equations for the electric and magnetic fields generated by completely arbitrary charge and current density distributions at rest, we derive…B. Thidé, J. Lindberg, H. Then et al.·Jan 6, 2010SaveLearn
Negative effective mass below a cut-off frequencyNegative mass phenomena occurring below a cut-off frequency is examined by both theoretical and experimental methods. The paper begins with the investigation on a mass-spring structure, the effective…Shanshan Yao, Xiaoming Zhou, Gengkai Hu·Jan 6, 2010SaveLearn
Solitary wave solution to the generalized nonlinear Schrodinger equation for dispersive permittivity and permeabilityWe present a solitary wave solution of the generalized nonlinear Schrodinger equation for dispersive permittivity and permeability using a scaling transformation and coupled amplitude-phase…Amarendra K. Sarma·Jan 5, 2010SaveLearn
On the locus formed by the maximum heights of projectile motion with air resistanceWe present an analysis on the geometrical place formed by the set of maxima of the trajectories of a projectile launched in a media with linear drag. Such a place, the locus of apexes, is written in…H. Hernández-Saldaña·Jan 4, 2010SaveLearn
Electrodynamics of balanced chargesIn this work we modify the wave-corpuscle mechanics for elementary charges introduced by us recently. This modification is designed to better describe electromagnetic (EM) phenomena at atomic scales.…Anatoli Babin, Alexander Figotin·Dec 28, 2009SaveLearn
Reply to "Comment on `Can Maxwell's equations be obtained from the continuity equation?'" by E. Kapuscik [Am. J. Phys. 77, 754 (2009)]This paper replies the comment by E. Kapuscik [Am. J. Phys. 77, 754 (2009)]Jose A. Heras·Dec 26, 2009SaveLearn
How to obtain the covariant form of Maxwell's equations from the continuity equationThe covariant Maxwell equations are derived from the continuity equation for the electric charge. This result provides an axiomatic approach to Maxwell's equations in which charge conservation is…Jose A. Heras·Dec 26, 2009SaveLearn
Design method for quasi-isotropic transformation materials based on inverse Laplace's equation with sliding boundariesThe deformation method of transformation optics has been demonstrated to be a useful tool, especially in designing arbitrary and nonsingular transformation materials. Recently, there are emerging…Zheng Chang, Jin Hu, Xiaoming Zhou et al.·Dec 25, 2009SaveLearn
Singular behaviour of the electromagnetic fieldThe singularities of the electromagnetic field are derived to include all the point-like multipoles representing an electric charge and current distribution. Firstly derived in the static case, the…C. Vrejoiu, R. Zus·Dec 23, 2009SaveLearn
Euler equations in a 3+1 frameworkIn this paper we show how the non-relativistic transport equations for a simple fluid can be obtained using a 3+1 representation. A pseudo-galilean transformation is introduced in order to obtain the…A. R. Sagaceta-Mejia, A. L. Garcia-Perciante·Dec 22, 2009SaveLearn