Results 21 to 30 of about 830,301 (276)

A simplified 2½-degree of freedom time-domain model with non-linearity for the simulation of parametric roll

open access: yesAlexandria Engineering Journal, 2018
In this paper, a simplified 2½-degree of freedom time-domain numerical method with non-linearity is developed, presented in detail and validated for simulating parametric roll.
Tamer M. Ahmed
doaj   +1 more source

Parametric resonance of fractional viscoelastic webs under time-dependent tension

open access: yesResults in Physics, 2023
The focus of this paper is on the parametric resonance of fractional viscoelastic webs under time-dependent tension. The novelty of this work lies in the introduction of a fractional order model for viscoelastic webs and the time-dependent tension in ...
Jiajuan Qing   +4 more
doaj   +1 more source

Dynamic Analysis on Self Weight Compensating Roll Equipped Center Pivot Rotary Dancer [PDF]

open access: yes한국정밀공학회지, 2020
Recently, there has been increasing demand for flexible electronic applications such as flexible displays, foldable smartphones, and flexible batteries based on flexible substrates.
Hyunkyoo Kang
doaj   +1 more source

Current Status of the 2nd Generation of Intact Stability: Investigation of the Pure Loss of Stability and Parametric Roll Mode

open access: yes한국해양공학회지, 2020
A review of the 2nd generation of intact stability by the International Maritime Organization is performed. The main issues with the new stability criteria are reviewed.
Jaeho Chung   +3 more
doaj   +1 more source

Numerical Study of Parametric Roll on a Fishing Vessel [PDF]

open access: yesVolume 9: Odd M. Faltinsen Honoring Symposium on Marine Hydrodynamics, 2013
Present research activity examines numerically the occurrence of parametric roll on a fishing vessel interacting with regular head-sea waves. The adopted solver is an efficient 3-D numerical Domain-Decomposition strategy for the seakeeping of a 6-dof vessel without and with small forward speed and possibly subjected to bottom-slamming and water-on-deck
Greco M, Lugni C
openaire   +3 more sources

Multi-parametric Dynamic Analysis of a Rolling Bearings System

open access: yesStrojniški vestnik – Journal of Mechanical Engineering, 2021
A method for calculating amplitudes and constructing frequency characteristics of forced and self-excited vibrations of a rotor-fluid-foundation system on rolling bearings with a non-linear characteristic based on the method of complex amplitudes and harmonic balance has been developed.
Kydyrbekuly, Almatbek   +3 more
openaire   +3 more sources

Numerical and Experimental Investigation of Parametric Roll [PDF]

open access: yes, 2013
The main purpose of this Master thesis is to provide insights about thesensitivity of parametric roll occurrence. Parametric roll resonance may leadto large roll angles experienced by the ship typically in longitudinal waves. Itis related to the periodic change of stability when the ship's wave encounterfrequency is approximately twice the rolling ...
Geyssel, Johannes Joachim Kalevi
core   +4 more sources

The Effect of Mooring Line Parameters in Inducing Parametric Resonance on the Spar-Buoy Oscillating Water Column Wave Energy Converter

open access: yesJournal of Marine Science and Engineering, 2020
Although it is widely accepted that accurate modeling of wave energy converters is essential for effective and reliable design, it is often challenging to define an accurate model which is also fast enough to investigate the design space or to perform ...
Giuseppe Giorgi   +3 more
doaj   +1 more source

f(R) constant-roll inflation

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
The previously introduced class of two-parametric phenomenological inflationary models in general relativity in which the slow-roll assumption is replaced by the more general, constant-roll condition is generalized to the case of f(R) gravity.
Hayato Motohashi, Alexei A. Starobinsky
doaj   +1 more source

Study on the parametric roll characteristics of ships under bow oblique waves

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveParametric roll is a common stability loss mode considered in the international maritime organization (IMO) second-generation intact stability framework, most often occurring in head or following seas.
Wuyang LIU   +4 more
doaj   +1 more source

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