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Classification of Parametric Rolling for Seagoing Ships and Percentage Distribution for Multiple Sea State Parameters [PDF]

open access: yesTransNav, 2022
In this paper, parametric rolling is divided into 5 heavy grades, establishing a classification for parametric rolling. This is achieved by a multi-parameter application in the simulations.
Sovanna Chhoeung, Axel Hahn
doaj   +3 more sources

STRUCTURAL-PARAMETRIC SYNTHESIS OF ROLLING MILLS MULTI-MOTOR ELECTRIC DRIVES [PDF]

open access: yesElectrical engineering & Electromechanics, 2020
Aim. Improving of control accuracy by rolling strip thickness and tension and reducing of sensitivity to changes of plant parameters based on structural-parametric synthesis of robust control by rolling mills multi-motor electric drives with parametric ...
B. I. Kuznetsov   +2 more
doaj   +2 more sources

Stability and control mechanism of nonlinear horizontal vibration for rolling system with gyroscope precession effect [PDF]

open access: yesScientific Reports
This paper investigates the nonlinear horizontal vibration of a cold rolling system induced by the gyroscope precession effect-a critical yet underexplored issue affecting strip quality and rolling stability.
Chaofan Sun   +5 more
doaj   +2 more sources

Acute effects of three warm-up protocols on drop jump biomechanics in elite Taekwondo athletes: An IMU-based analysis. [PDF]

open access: yesPLoS ONE
This randomized, parallel-group pre-post study examined the acute effects of three warm-up modalities on stretch-shortening cycle (SSC) biomechanics in elite female Taekwondo athletes. Thirty-six participants were randomly assigned to dynamic stretching,
Somayeh Taghidoust Chahardeh   +2 more
doaj   +2 more sources

Vibration energy harvesting for low frequency using auto-tuning parametric rolling pendulum under exogenous multi-frequency excitations

open access: yesTheoretical and Applied Mechanics Letters, 2020
: An electromagnetic parametrically excited rolling pendulum energy harvester with self-tuning mechanisms subject to multi-frequency excitation is proposed and investigated in this paper. The system consists of two uncoupled rolling pendulum.
Surat Punyakaew, Manukid Parnichkun
doaj   +3 more sources

Application of Parametric Forced Tuned Solid Ball Dampers for Vibration Control of Engineering Structures

open access: yesApplied Sciences, 2023
In this paper, parametric forced tuned solid ball dampers (TSBD) are considered for vibration control of engineering structures in an untypical way. The special feature of the presented investigation is to evaluate the potential application of parametric
Michael Reiterer, Joachim Muik
doaj   +1 more source

Axial stiffness for large-scale ball slewing rings with four-point contact [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2021
This article deals with the design of slewing rings (slewing bearings). A fully parametric, 3D virtual model of a ball slewing ring with four-point contact was created in the PTC/Creo Parametric CAD system.
Slavomir Hrcek   +2 more
doaj   +1 more source

Application of the IMO Second Generation Intact Stability Criteria to a Ballast-Free Containership

open access: yesJournal of Marine Science and Engineering, 2021
A methodology is presented to systematically modify the hull shape of a ballast-free container ship, in order to manage the issue of righting lever variation in waves.
Nicola Petacco   +3 more
doaj   +1 more source

Vibration Characteristics of Hot Rolling Mill Rolls Based on Elastoplastic Hysteretic Deformation

open access: yesMetals, 2021
Based on the analysis of the influence of roll vibration on the elastoplastic deformation state of a workpiece in a rolling process, a dynamic rolling force model with the hysteresis effect is established.
Rongrong Peng   +2 more
doaj   +1 more source

Dynamic stability vulnerability assessment and optimization of large ocean-going passenger vessel

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesThe dynamic stability of large ocean-going passenger vessel is of great important to ensuring the safety of a large number of passengers. Thus, it is necessary to carry out vulnerability assessment and optimization for typical failure modes ...
Xiaoqing QIN   +3 more
doaj   +1 more source

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