Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Sampaio, Rubens"'
Autor:
Leckar, Hamilton F., Sampaio, Rubens
Publikováno v:
Pro Mathematica; Vol. 12, Núm. 23-24 (1998); 91-101
We consider the linear system -∆ u + grad p = f plus the divergence-free condition div u = O, in a bounded and conected but non simply connected open set Ω of R³, with a boundary ᴦ of C∞ class. Using orthogonal decompositions of the Hilbert
Externí odkaz:
http://revistas.pucp.edu.pe/index.php/promathematica/article/view/8131/8423
http://repositorio.pucp.edu.pe/index/handle/123456789/96316
http://repositorio.pucp.edu.pe/index/handle/123456789/96316
Publikováno v:
In Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena November 2024 188
Publikováno v:
Mec\'anica Computacional, vol. 32, pp. 763-773, 2013
This work presents the estimation of the parameters of an experimental setup, which is modeled as a system with three degrees of freedom, composed by a shaft, two rotors, and a DC motor, that emulates a drilling process. A Bayesian technique is used
Externí odkaz:
http://arxiv.org/abs/2107.13535
Autor:
Cunha Jr, Americo, Sampaio, Rubens
Publikováno v:
Mec\'anica Computacional, vol. 31, pp. 2673-2683, 2012
This work studies the dynamics of a one dimensional elastic bar with random elastic modulus and prescribed boundary conditions, say, fixed at one end, and attached to a lumped mass and two springs (one linear and another nonlinear) on the other extre
Externí odkaz:
http://arxiv.org/abs/2107.12574
Publikováno v:
In Mechanical Systems and Signal Processing 1 April 2024 211
Publikováno v:
Computational Mechanics, vol. 55, pp. 849-878, 2015
This work intends to analyze the nonlinear stochastic dynamics of drillstrings in horizontal configuration. For this purpose, it considers a beam theory, with effects of rotatory inertia and shear deformation, which is capable of reproducing the larg
Externí odkaz:
http://arxiv.org/abs/2105.13454
Autor:
Cunha Jr, Americo, Sampaio, Rubens
Publikováno v:
Applied Mathematical Modelling, vol. 39, pp. 809-819, 2015
This paper presents a theoretical study on the influence of a discrete element in the nonlinear dynamics of a continuous mechanical system subject to randomness in the model parameters. This system is composed by an elastic bar, attached to springs a
Externí odkaz:
http://arxiv.org/abs/2105.10084
Publikováno v:
In Journal of Sound and Vibration 17 February 2024 571
Publikováno v:
the XV International Symposium on Dynamic Problems of Mechanics, Mar 2019, Buzios, Brazil
The domestic windows in the exterior building facade play a significant role in sound insulation against outdoor airborne noise. The prediction of their acoustic performances is classically carried out in laboratory according to standard ISO 10140. I
Externí odkaz:
http://arxiv.org/abs/2003.00887
Autor:
Clerkin, Eoin, Sampaio, Rubens
Publikováno v:
'Mathematical and Numerical Aspects of Dynamical Systems Analysis' ARSA Publishing, Lodz, POLAND 2017, ISBN 978-83-935312-6-4, p131-p142
The Arnold Sommerfeld effect is an intriguing resonance capture and release series of events originally demonstrated in 1902. A single event is studied using a two degree of freedom mathematical model of a motor with imbalance mounted to laterally re
Externí odkaz:
http://arxiv.org/abs/1711.01302