Results 21 to 30 of about 1,373,655 (201)

Numerical Analysis on Steam Exciting Force Caused by Rotor Eccentricity

open access: yesShock and Vibration, 2017
The steam exciting force has been proved to be great threat to the operation safety of steam turbines. The mechanism of steam exciting vibration cannot be profoundly revealed by simply analyzing the steam exciting force, especially in simplified models ...
L. H. Cao   +4 more
doaj   +1 more source

QUADRATIC AND CUBIC NON-LINEARITIES IN A QUASI-LINEAR PARAMETRICALLY-EXCITED SYSTEM

open access: yesVietnam Journal of Mechanics, 1993
A quasi-linear oscillating system always contains weak factors (negative and positive frictions, exciting forces in resonances, non-linarites of restoring forces) usually characterized by a small parameters €.
Nguyen Van Dinh
doaj   +1 more source

Investigating Erasmus mobility exchange networks with gravity models

open access: yesCogent Social Sciences, 2023
The Erasmus mobility exchange program is one of the most considerable cooperation and mobility networks in the world; however, the driving forces of the mobility exchange program are still questionable.
Zsolt T. Kosztyán   +2 more
doaj   +1 more source

Study on Dynamic Characteristics of the Disc Spring System in Vibration Screen

open access: yesShock and Vibration, 2020
To avoid too large exciting force in traditional linear vibrating screen and unstable working state in resonance screen, the disc spring system is applied in the linear vibration screen.
Jiacheng Zhou   +3 more
doaj   +1 more source

Influence of thrust bearing seating on acoustic radiation of submarine

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives] In this paper, the influence of thrust bearing seating on the acoustic radiation of a submarine is studied. [Methods] By utilizing the Finite Element(FE)method and FE coupling fluid interface method, the structure vibration of the pressure ...
SUN Qian, LIU Wenxi, ZHOU Qidou, JI Gang
doaj   +1 more source

Solid Earth–atmosphere interaction forces during the 15 January 2022 Tonga eruption

open access: yesScience Advances, 2023
Rapid venting of volcanic material during the 15 January 2022 Tonga eruption generated impulsive downward reaction forces on the Earth of ~2.0 × 1013 N that radiated seismic waves observed throughout the planet, with ~25 s source bursts persisting for ~4.
R. Garza‐Girón   +4 more
semanticscholar   +1 more source

Supramolecular structures based on metal-organic cages

open access: yesGiant, 2021
Molecular metal-organic cages (MOCs) are constructed via coordination among diverse ligands and metal acceptors with great control over the size, shape, cavity, and composition.
Ehsan Raee, Yuqing Yang, Tianbo Liu
doaj   +1 more source

Hydrodynamic Analysis and Motions of Ship with Forward Speed via a Three-Dimensional Time-Domain Panel Method

open access: yesJournal of Marine Science and Engineering, 2021
A new three-dimensional (3D) time-domain panel method is developed to solve the ship hydrodynamic problem and motions. For an advancing ship with a constant forward speed in regular waves, the ship’s hull can be discretized and processed into a number of
Peng Zhang, Teng Zhang, Xin Wang
doaj   +1 more source

Hydrodynamic Behavior of a Submerged Spheroid in Close Proximity to the Sea Surface

open access: yesJournal of Marine Science and Engineering
The principal objective of this investigation is to assess the hydrodynamic characteristics and the exciting forces induced by waves acting upon a shallowly submerged spheroid.
Anargyros S. Mavrakos   +2 more
doaj   +1 more source

Wave Exciting Force Maximization of Truncated Cylinders in a Linear Array

open access: yesEnergies, 2020
This study focuses on the determination of optimum layout configurations for a linear array of identical mutually interacting truncated cylinders. Optimum configurations correspond to those that maximize either the total heave exciting force acting on ...
Constantine Michailides   +2 more
doaj   +1 more source

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