Reduced-order modelling based on non-linear modes

CEN Mazzilli, PB Gonçalves, GR Franzini - International Journal of …, 2022 - Elsevier
This paper addresses a detailed literature review on non-linear modes of vibration and its
role in obtaining more efficient reduced-order models, as compared to those obtained by …

Non-linear modal analysis for beams subjected to axial loads: Analytical and finite-element solutions

CEN Mazzilli, CT Sanches, OGPB Neto… - International Journal of …, 2008 - Elsevier
A rigorous derivation of non-linear equations governing the dynamics of an axially loaded
beam is given with a clear focus to develop robust low-dimensional models. Two important …

Two-to-one internal resonance of an inclined marine riser under harmonic excitations

FK Alfosail, MI Younis - Nonlinear Dynamics, 2019 - Springer
In this paper, we study the two-to-one internal resonance of an inclined marine riser under
harmonic excitations. The riser is modeled as an Euler–Bernoulli beam accounting for mid …

Active control of vortex-induced vibrations in offshore catenary risers: a nonlinear normal mode approach

CEN Mazzilli, CT Sanches - Journal of Mechanics of Materials and …, 2011 - msp.org
Offshore catenary risers are used in the exploitation of deep-water oil and gas fields. They
are subjected to severe dynamical loads, such as high-pressure inside-flow of fluids, sea …

Dynamics characterization of a U-shaped micro-resonator portal frame

RT Rocha, N Alcheikh, F Khan… - Journal of …, 2020 - ieeexplore.ieee.org
We present a study of the natural (resonance) frequencies of a tunable in-plane
Microelectromechanical portal frame (U-shape) under DC electrostatic loads. The structure …

Reduced-order modelling in non-linear dynamics: an approach based on non-linear modes

CEN Mazzilli, GC Monticelli… - Proceedings of the …, 2011 - journals.sagepub.com
It is largely accepted that non-linear modes of vibration may be particularly suitable for
obtaining 'reduced-order'models in non-linear dynamics, for their ability to grasp the …

[PDF][PDF] Non-linear normal modes of a fixed-moored offshore catenary riser

CEN Mazzilli, CT Sanches - Proc. of XIX Conference AIMETA, 2009 - dipmat.univpm.it
Offshore catenary risers are used in the exploitation of deep-water oil and gas fields, such as
those along the Brazilian Southeast coast. They are subjected to severe dynamical loads …

Contributions to the investigation of the nonlinear dynamics of immersed slender structures: reduced-order model analysis and their advantages.

GJV Lopes - 2022 - teses.usp.br
In any problem of structural engineering, there is the need of creation of a mathematical
model to represent the desired physical phenomenon, followed by its solution. The latter …

Modos não-lineares de vibração e controle ativo de risers.

CT Sanches - 2009 - teses.usp.br
Este trabalho tem por objetivos: o estudo do comportamento dinâmico nãolinear de risers
oceânicos, utilizando modos não-lineares de vibração, e o controle ativo das vibrações …

[PDF][PDF] Engineers, Part C: Journal of Mechanical

CEN Mazzilli, GC Monticelli, NAG Neto - edisciplinas.usp.br
It is largely accepted that non-linear modes of vibration may be particularly suitable for
obtaining 'reduced-order'models in non-linear dynamics, for their ability to grasp the …