Buscar
Mostrando ítems 11-20 de 193
Light-cone fluctuations and the renormalized stress tensor of a massless scalar field
(2013-01-10)
We investigate the effects of light-cone fluctuations over the renormalized vacuum expectation value of the stress-energy tensor of a real massless minimally coupled scalar field defined in a (d+1)-dimensional flat space-time ...
Control of instabilities in non-Newtonian free surface fluid flows
(Abcm Brazilian Soc Mechanical Sciences & Engineering, 2013-10-01)
Free surface flows in inclined channels can develop periodic instabilities that are propagated downstream as shock waves with well-defined wavelengths and amplitudes. Such disturbances are called roll waves and are common ...
Dynamic analysis of impact tools by using a method based on stress wave propagation and impulse-momentum principle
(ASME, 2003)
We present a numerical method derived from the Impulse-Linear Momentum Principle that can be used in the design of impact tools for rock drilling. This method allows the prediction of energy transmission to rock, the ...
Digital material laboratory: Wave propagation effects in open-cell aluminium foams
(Elsevier, 2012-09)
This paper is concerned with numerical wave propagation effects in highly porous media using digitized images of aluminum foam -- Starting point is a virtual material laboratory approach -- The Aluminum foam microstructure ...
Digital material laboratory: Wave propagation effects in open-cell aluminium foams
(PERGAMON-ELSEVIER SCIENCE LTD, 2012-09-01)
This paper is concerned with numerical wave propagation effects in highly porous media using digitized images of aluminium foam. Starting point is a virtual material laboratory approach. The aluminium foam microstructure ...
Ageing effects in the shear modulus of soils
(ELSEVIER SCI LTD, 2000)
Results of in situ tests of shear wave propagation are presented and analysed to evaluate the effects of geologic processes, stress history and ageing on the shear modulus of soils. These results show clear tendencies of ...
Avaliação da influência da vazão de gás utilizada no processo GMAW nas tensões residuais utilizando ondas LCR
(Universidade Federal de Santa MariaBrasilEngenharia MecânicaUFSMPrograma de Pós-Graduação em Engenharia MecânicaCentro de Tecnologia, 2023-03-09)
Welding is a manufacturing process widely used in industry to join metal parts permanently.
However, at the end of the process, due to the high temperatures involved, residual stresses
(RS) appear, making the welded ...
On modelling SH-waves in a class of inhomogeneous anisotropic media via the Boundary Element Method
(Wiley-v C H Verlag GmbhWeinheimAlemanha, 2010)