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Experimental analysis of vertical and flexible cylinder in water: response to top motion excitation and parametric resonance
(ASMESan Francisco, 2014-06-08)
Experiments with a flexible and submerged cylinder were carried out to investigate fundamental aspects of risers dynamics subjected to harmonic excitation at the top. The flexible model was designed aiming a high level of ...
Nonlinear reduced-order modeling and bifurcation analysis of whirl flutter in a rotor-nacelle system
(2020-01-01)
Whirl flutter is an aeroelastic instability that can be affected by structural or/and aerodynamic nonlinearities. This instability may lead to potentially dangerous behaviors. In this study, a nonlinear reduced-order model ...
Bayesian regularization for flexible baseline hazard functions in Cox survival models
(WILEY, 2021)
Fully Bayesian methods for Cox models specify a model for the baseline hazard function. Parametric approaches generally provide monotone estimations. Semi-parametric choices allow for more flexible patterns but they can ...
Ion acoustic instability triggered by finite amplitude polarized waves in the solar wind
(Blackwell Publishing Ltd, 2005)
[1] It is shown that ion-acoustic waves propagating along an external magnetic field and
generated by parametric decays of circularly polarized finite amplitude waves have the
properties of ion-acoustic waves observed ...
Waves and topological structures in vibrated granular materials
(2002)
Parametric surface waves arise spontaneously when a thin layer of granular material is oscillated vertically. Several models proposed at present account well for the observed instability threshold and the appearance of a ...
A highly settled disk around Oph163131
(IOP, 2022)
High dust density in the midplane of protoplanetary disks is favorable for efficient grain growth and can allow fast formation of planetesimals and planets, before disks dissipate. Vertical settling and dust trapping in ...