Results 211 to 220 of about 19,535 (257)
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Elastic nonlinearity of aerogels
Physical Review B, 1992We have investigated the sound propagation in ${\mathrm{SiO}}_{2}$ aerogels and three types of organic aerogels: resorcinol formaldehyde, melamine formaldehyde, and vitreous carbon. The main parameter determining the sound velocity is the aerogel density; however, the bond strength and cross linking also influence the stiffness of these materials ...
, Gross, , Fricke, , Pekala, , Hrubesh
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Global Continuation in Nonlinear Elasticity
Archive for Rational Mechanics and Analysis, 1998Timothy Healey +2 more
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A nonlinear observer for elastic robots
IEEE Journal on Robotics and Automation, 1988Robot manipulators in which the joints exhibit a certain amount of elasticity are discussed. The model of such robots is highly nonlinear, and available techniques to build nonlinear observers generally do not apply. A procedure to construct approximate nonlinear observers is proposed that uses a recent approach to deriving observers based on geometric
Nicosia, Salvatore +2 more
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Solitons in a Nonlinear Elastic Medium
Materials Science Forum, 1991The influence of nonlinearity on shear horizontal elastic (bulk and surface) waves in crystals is considered on the basis of a nonlinear equation derived from a microscopic scalar model. The continuum limit is compared with the equation obtained in the framework of nonlinear elasticity theory.
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2001
Nonlinear elasticity is concerned with nonlinear effects associated with deformations of elastic bodies subjected to external forces or temperature variations. It has important applications in many areas, including the aerospace and rubber industries, and biomechanics.
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Nonlinear elasticity is concerned with nonlinear effects associated with deformations of elastic bodies subjected to external forces or temperature variations. It has important applications in many areas, including the aerospace and rubber industries, and biomechanics.
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Nonlinear interactions in elastic resonators
Ultrasonics, 2006This work is dedicated to nonlinear interactions in elastic resonators. It is supposed that a resonator wall yields locally to the inner pressure. The elastic wall of the resonator induces strong dispersion and dissipation of acoustic energy. The dispersion can significantly influence studied nonlinear interactions which are ineffective because the ...
Michal, Bednarik, Milan, Cervenka
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Nonlinear Theory of Elastic Surfaces
Journal of Mathematical Physics, 1966The present paper develops a nonlinear theory for the deformation of an elastic surface by assuming the existence of a strain energy function and postulating a principle of virtual work which governs its mechanical behavior. By considering the strain energy function to depend on the first- and second-order deformation gradients, the field equations and
Cohen, H., DeSilva, C. N.
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Nonlinear elasticity in nanostructured materials
Reports on Progress in Physics, 2011We elaborate on a blended continuum/atomistic theoretical picture of the nonlinear elastic properties of nanostructured materials, looking at diverse aspects such as dispersions of inhomogeneities within a matrix, random or graded nanograined materials, two-dimensional atomic sheets.
COLOMBO, LUCIANO, GIORDANO S.
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Nonlinear elasticity of amorphous solids
Physical Review Letters, 1989Structural phase transitions in amorphous solids associated with vanishing bulk modulus K or shear modulus \ensuremath{\mu} are considered. We find that the transition (realized in gels) at K=0, though of second order, does not exhibit true scaling behavior of density fluctuations.
, Golubovic, , Lubensky
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Nonlinear Elasticity of Granular Media
Journal of Applied Mechanics, 1997The finite and incremental elasticity of a random packing of identical spheres is derived using energy methods. We consider different models for the contact forces between spheres, all of which are based upon or related to the fundamental Hertz theory; we consider only the special cases of perfect friction (no tangential slip) or no tangential friction.
Norris, A. N., Johnson, D. L.
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