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Inertia

About: Inertia is a research topic. Over the lifetime, 12006 publications have been published within this topic receiving 164291 citations.


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Journal Article
TL;DR: In this paper, an investigation of transversally driven beams is carried out against control PARAMETERS, I.E. AMPLITUDE and FREQUENCY of an EXTERNAL LOADING for a series of Boundedary CONDITIONS and for two KINEMATICAL BEAM MODELS of EULER-BERNOULLI and TIMOSHENKO TYPES.
Abstract: NUMERICAL INVESTIGATIONS OF TRANSVERSALLY DRIVEN BEAMS ARE CARRIED OUT VERSUS CONTROL PARAMETERS, I.E. AMPLITUDE AND FREQUENCY OF AN EXTERNAL LOADING FOR A SERIES OF BOUNDARY CONDITIONS AND FOR TWO KINEMATICAL BEAM MODELS OF EULER-BERNOULLI AND TIMOSHENKO TYPES. NOVEL STIFF STABILITY BEAM LOSS IS DETECTED AND STUDIED. RELIABILITY OF THE OBTAINED RESULTS IS VERFIED VIA FEM (FINITE ELEMENT METHOD) AND FDM (FINITE DIFFERENCE METHOD). TRANSI-TIONAL AND CHAOTIC PHENOMENA EXHIBITED BY FLEXIBLE EULER-BERNOULLI BEAMS SUBJECTED TO AN IMPACT ACTION OF A ONE-DEGREE OF FREEDOM BODY WITH A GIVEN MASS AND VELOCITY ARE ANALYZED. IT HAS BEEN SHOWN, AMONG THE OTHERS, THAT INCLUSION OF TRANSVERSAL SHEARS AND ROTATION INERTIA ESSENTIALLY IN°UENCES NONLINEAR DYNAMICS OF THE STUDIED BEAMS SUBJECTED TO TRANSVERSAL AND SIGN-CHANGEABLE LOAD ACTIONS.

39 citations

Journal ArticleDOI
TL;DR: In this article, the characteristics of bending moments, shear forces and stresses at unit connections of very large floating structures (VLFS) under wave loads are investigated by solving multi-body motion equation considering hydroelasticity and connection stiffness.

39 citations

Proceedings ArticleDOI
09 Sep 2001
TL;DR: In this article, a non-dimensional, periodic, linear time-varying model with torsional and lateral degrees-of-freedom is developed for a rotor shaft-disk assembly supported on a flexible bearing and driven through a U-joint.
Abstract: Understanding the instability phenomena of rotor-shaft and driveline systems incorporating universal joints is becoming increasingly important because of the trend towards light-weight, high-speed supercritical designs. In this paper, a nondimensional, periodic, linear time-varying model with torsional and lateral degrees-of-freedom is developed for a rotor shaft-disk assembly supported on a flexible bearing and driven through a U-joint. The stability of this system is investigated utilizing Floquet theory. It is shown that the interaction between torsional and lateral dynamics results in new regions of parametric instability that have not been addressed in previous investigations. The presence of load inertia and misalignment causes dynamic coupling of the torsion and lateral modes, which can result in torsion-lateral instability for shaft speeds near the sum-type combinations of the torsion and lateral natural frequencies. The effect of angular misalignment, static load-torque, load-inertia, lateral frequency split, and auxiliary damping on the stability of the system is studied over a range of shaft operating speeds. Other than avoiding the unstable operating frequencies, the effectiveness of using auxiliary lateral viscous damping as a means of stabilizing the system is investigated. Finally, a closed-form technique based on perturbation expansions is derived to determine the auxiliary damping necessary to stabilize the system for the least stable case (worst case). ©2002 ASME

39 citations

Journal ArticleDOI
22 May 2014-EPL
TL;DR: In this article, a generic model of globally coupled rotors that includes the effects of noise, phase shift in the coupling, and distributions of moments of inertia and natural frequencies of oscillation is studied.
Abstract: We study a generic model of globally coupled rotors that includes the effects of noise, phase shift in the coupling, and distributions of moments of inertia and natural frequencies of oscillation. As particular cases, the setup includes previously studied Sakaguchi-Kuramoto, Hamiltonian and Brownian mean-field, and Tanaka-Lichtenberg-Oishi and Acebron-Bonilla-Spigler models. We derive an exact solution of the self-consistent equations for the order parameter in the stationary state, valid for arbitrary parameters in the dynamics, and demonstrate nontrivial phase transitions to synchrony that include reentrant synchronous regimes.

39 citations

Patent
17 Dec 1958

39 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023886
20221,975
2021443
2020562
2019609
2018566