Elastic Half Space
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Hankel transformation method for solving the Westergaard problem for point, line and distributed loads on elastic half-space
Abstract The Hankel transformation method was used in this work to determine the normal and shear stress distributions due to point, line and distributed loads applied to the surface of an elastic media. The elastic media considered in this study was assumed to be inextensible in the horizontal directions, and the only non-vanishing displacement component is
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
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2. Normal Mode Analysis to a Poroelastic Half-Space Problem under Generalized Thermoelasticity
Abstract The thermo-hydro-mechanical problems associated with a poroelastic half-space soil medium with variable properties under generalized thermoelasticity theory were investigated in this study. By remaining faithful to Biot’s theory of dynamic poroelasticity, we idealized the foundation material as a uniform, fully saturated, poroelastic half-space me
Lat. Am. j. solids struct.. Publicado em: 2017-06
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3. Al and PEG Effect on Structural and Physicochemical Properties of CoFe2O4
In this work, pure and Alumina doped cobalt ferrite nanoparticles CoFe2−xAlxO4 (for x = 0.44) have been synthesized by the sol gel method. The influence of alumina doping on the morphological and mechanical properties of CoFe2O4 nano-particles were investigated by means of X-ray powder diffraction (XRD) and rietveld analysis. XRD analysis confirmed that th
Mat. Res.. Publicado em: 06/03/2017
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4. Dispersion of Love wave in an isotropic layer sandwiched between orthotropic and prestressed inhomogeneous half-spaces
Abstract An in-depth study has been carried out for the dispersion of Love waves in an isotropic elastic layer sandwiched between orthotropic and prestressed inhomogeneous elastic half-spaces. The inhomogeneities in density and rigidity of the lower half-space are space dependent and an arbitrary function of depth. Simple mathematical techniques are used to
Lat. Am. j. solids struct.. Publicado em: 2015-10
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5. Reflection/refraction at the interface of an elastic solid and a partially saturated porous solid containing liquid filled bound pores and a connected pore space saturated by two-phase fluid
Abstract The phenomena of reflection and refraction of plane waves incident obliquely at a plane interface between uniform elastic solid half-space and porous solid containing liquid filled bound pores and two-phase fluid in connected pores has been analyzed. The amplitude ratios of the reflected and refracted waves to that of the incident wave are calculate
Lat. Am. j. solids struct.. Publicado em: 2015-10
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6. Propagation of plane waves at the interface of an elastic solid half-space and a microstretch thermoelastic diffusion solid half-space
The problem of reflection and refraction phenomenon due to plane waves incident obliquely at a plane interface between uniform elastic solid half-space and microstretch thermoelastic diffusion solid half-space has been studied. It is found that the amplitude ratios of various reflected and refracted waves are functions of angle of incidence, frequency of inc
Lat. Am. j. solids struct.. Publicado em: 2013-11
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7. Far-field dynamic behavior of a half-space under an inertial strip foundation subjected to a time-harmonic force
Recent research works demonstrated that the interaction between the loads and the carrying structure's boundary which is related to the inertia of the load is an influential factor on the dynamic response of the structure. Although effects of the inertia in moving loads were considered in many works, very few papers can be found on the inertial effects of th
Lat. Am. j. solids struct.. Publicado em: 2013-05
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8. Transient wave propagation phenomena at visco-elastic half-spaces under distributed surface loadings
This article analyzes the transient wave propagation phenomena that take place at 2D viscoelastic half-spaces subjected to spatially distributed surface loadings and to distinct temporal excitations. It starts with a fairly detailed review of the existing strategies to describe transient analysis for elastic and viscoelastic continua by means of the Boundary
Lat. Am. j. solids struct.. Publicado em: 2012-08
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9. A FEM-BEM interactive coupling for modeling the piezoelectric health monitoring systems
In this research, finite element and boundary element methods are coupled together to model the interaction of a piezoelectric ceramic working as an actuator with an elastic material. Piezoelectric-elastic material's interaction occurs in smart structures. This work is aimed at determining the actuation effects being transferred from the actuators to the hos
Latin American Journal of Solids and Structures. Publicado em: 2011-09
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10. Estudo da influencia dos perfis de solo na resposta dinamica de sistemas rotor-fundação / Study of the influence of soil profiles on dynamic response of rotor-foundation systems
The aim of the present work is to extend and improve the dynamic analysis of a rotorfoundation-soil system by including the modelling of distinct soil profiles. The unbalance response of a simple two-dimensional Laval (Jeffcott) rotor with rigid bearings is performed. The rotor is attached to a rigid strip foundation (block foundation). The soil profiles, on
Publicado em: 2006
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11. Comparative analysis of machine foundation design methods / AnÃlise comparativa de mÃtodos de cÃlculo para fundaÃÃes de mÃquinas
Industrial technological advances, in the last decades, generated the development of high performance and precision machines which, by your turn, have demanded optimized foundation designs. Each time, several trials have to be considered to get a foundation design that conciliates the maximum efficiency with acceptable costs. Finite element modeling is a pow
Publicado em: 2006
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12. Evaluation of subsurface contact stresses in railroad wheels using an elastic half-space model
Railroad wheels fail in two main modes: rolling surface defects like spalling, shelling and wear, and internal defects including cracks propagating after a change takes place in the original stress pattern. Although the effects of the latter are almost always catastrophic, the former is more usual. The onset of rolling surface defects depends on the strength
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-12