Results 11 to 20 of about 674,520 (284)

Study on numerical simulation and mitigation of parametric rolling in a container ship under head waves [PDF]

Brodogradnja
To investigate the parametric rolling motion of container ships navigating in head seas, this study utilizes the unsteady RANS approach combined with dynamic overlapping grid technology to simulate parametric roll in a container ship under the coupled ...
Liu Liang, Zhang Baoji, Zhang Hao, Gong Jiaye, Tian Zheng, Guo Shuhui, Bao Yuanbiao, Zheng Xu   +7 more
doaj   +2 more sources

On the Parametric Rolling of Container Vessels [PDF]

Brodogradnja : An International Journal of Naval Architecture and Ocean Engineering for Research and Development, 2010
The main objective of this article is to outline a simple method to identify whether a ship is susceptible to extreme rolling, in order to avoid or to reduce the effects of that phenomenon. A short review of the current classifi cation societies’ recommendations is given, as well as a brief description of the physical phenomenon of parametric roll ...
RIBEIRO e SILVA, Sergio, Turk, Anton, Guedes Soares, Carlos, Prpić.Oršić, Jasna   +3 more
core   +5 more sources

Parametric Rolling at Main Resonance [PDF]

Brodogradnja : An International Journal of Naval Architecture and Ocean Engineering for Research and Development, 2008
The parametric resonance of the induced rolling is a typical dangerous situation for the transversal stability of ships operating in longitudinal waves. This paper presents the results of experimental tests regarding the seakeeping performances of a 2700 dwt cargo model at full loading, in regular longitudinal waves.
Obreja D., NABERGOJ, RADOSLAV, Crudu L., Pacuraru Popoiu S.   +3 more
core   +6 more sources

THE EXPECTABLE MODEL OF PARAMETRIC RELIABILITY FOR POWERED ELECTROMAGNETIC UNITS OF RAILWAY ROLLING STOCK [PDF]

Nauka ta progres transportu, 2010
The probabilistic model of parametric reliability of power electromagnetic valve contactors of rolling stock which helps to evaluate the probability of failures in condition of switching a contactor (the tractive force during the whole process of ...
M. O. Kostin, O. O. Marenych
doaj   +1 more source

Numerical calculation and mechanical mechanism analysis of ship parametric rolling

Zhongguo Jianchuan Yanjiu, 2020
[Objective] The parametric rolling is a special instability phenomenon of ship in the wave. The current research proves that the change of the stability parameter when the wave passes through the hull is the reason for the rolling motion of the hull,but ...
ZHU Jun, ZHU Tao, WANG Zhiyu, XIA Qiqiang, HUANG Kunlun, GE Yijun   +5 more
doaj   +1 more source

A Simplified Mathematical Model for the Analysis of Varying Compliance Vibrations of a Rolling Bearing

Applied Sciences, 2020
In this paper, a simplified approach in the analysis of the varying compliance vibrations of a rolling bearing is presented. This approach analyses the generation of vibrations in relation to two boundary positions of the inner ring support on an even ...
Radoslav Tomović
doaj   +1 more source

Mechanism and Characteristics of Global Varying Compliance Parametric Resonances in a Ball Bearing

Applied Sciences, 2020
Varying compliance (VC) is an unavoidable form of parametric excitation in rolling bearings and can affect the stability and safety of the bearing and its supporting rotor system.
Zhiyong Zhang, Thomas Sattel, Yujie Zhu, Xuan Li, Yawei Dong, Xiaoting Rui   +5 more
doaj   +1 more source

Parametric rolling of the Tumblehome hull using CFD [PDF]

, 2015
Parametric rolling is one of the five failure modes introduced by the draft amendments to IMO’s 2008 IS Code. The aim of this paper is to study the use of CFD for the detection of parametric rolling.
Galbraith, Alistair, Boulougouris, Evangelos   +1 more
core   +2 more sources

Parametric roll oscillations of a hydrodynamic Chaplygin sleigh

Nonlinear Dynamics, 2023
Biomimetic underwater robots use lateral periodic oscillatory motion to propel forward, which is seen in most fishes known as body caudal fin (BCF) propulsion. The lateral oscillatory motion makes slender-bodied fish-like robots roll unstable. Unlike the case of human-engineered aquatic robots, many species of fish can stabilize their roll motion to ...
Kartik Loya, Phanindra Tallapragada
openaire   +3 more sources

Study and Analysis on Stress Safety Judgment Method of Heavy Vehicle Rolling on Long-Distance Pipeline

Geofluids, 2022
With the rapid increasing mileage of China’s long-distance oil and gas pipelines, the intersection construction with other civil engineering, encroachment by invading the pipeline route, and other third-part problems occurred occasionally. Heavy vehicles
Ning Shi, Jinxu Jiang, Lin Geng, Liwen Zhang, Yakun Niu, Kaimeng Wang   +5 more
doaj   +1 more source