Dynamics of rotationally periodic structures

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WebFeb 8, 1980 · Space structures can be described in most cases as two dimensional periodic or rotationally periodic structures. Due to the extremely large number of … WebMay 1, 2002 · Dynamic analysis of a composite rotor. Sahli Souhila, B. Ahmed, Benadda Mohamed. Engineering. 2024. Rotor dynamic is a branch of applied mechanics that …

Analysis of the railway track as a spatially periodic structure

WebI. Romanescu's 12 research works with 353 citations and 4,379 reads, including: Passive Damping of Rotationally Periodic Structures with Tuned Piezoelectric Inductive Shunt WebRotationally periodic structures are used in many engineering applications such as turbine bladed disks or gear wheels. It is well known that the dynamics of such structures can be studied using the cyclic symmetry reduction. This method makes it possible to analyse the complete cyclic structure by considering a single elementary sector. rcfs60

Qualitative analysis of forced response of blisks with friction ring ...

WebApr 18, 2005 · Dynamics of rotationally periodic structures. Article. Jan 1979; INT J NUMER METH ENG; D. L. Thomas; The paper considers the finite element analysis of the free, undamped and the forced damped ... WebJan 1, 1979 · Dynamics of rotationally periodic structures Thomas, D. L. 1979-01-01 00:00:00 Central Electricity Research Laboratories, Leatherhead, Surrey, England … WebJan 1, 1987 · To obtain the natural frequencies of rotationally periodic structures, a simple block solver is developed. Complex arithmetic is used to reduce the analysis region to a repeating substructure; characteristic matrices are considered to be cyclic in nature (S. Michimura et al., Bull. Jap. Soc. Mech. Engrs24,1968–1993, 1981).Most of the … rcf roma

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Analysis of the railway track as a spatially periodic structure

WebJun 1, 2007 · Rotationally periodic structures are used in many engineering applications such as turbine bladed disks or gear wheels. It is well known that the dynamics of such structures can be studied using the cyclic symmetry reduction. This method makes it possible to analyse the complete cyclic structure by considering a single elementary … WebApr 19, 2001 · The forced vibration of a rotationally periodic structure when subjected to travelling wave excitation is discussed, with emphasis placed on the steady-state response of doublet modes having either repeated or split frequencies. Such vibration modes have spatially modulated shapes defined by (1) the number of nodal diameters … rc frfWebMay 1, 2011 · The model was extended to investigate the collective dynamics of periodic nonlinear two-dimensional arrays, and two applications have been considered: (i) a 2D … rc frequency scanner

"WebThe free and forced motions of a nonlinear periodic structure with cyclic symmetry are studied. The structure consists of a number of identical linear flexural members coupled … " - Dynamics of rotationally periodic structures

Dynamics of rotationally periodic structures

Dynamics of rotationally periodic large space structures

WebThe proposed method of analysis is based on the general theory of spatially periodic structures. The main feature of this theory is the possibility to apply Discrete Fourier Transform (DFT) ... Thomas D. L. Dynamics of rotationally periodic structures. Int. J. Numer. Methods Eng., 1979, 14, 81–102. Crossref. ISI. WebMay 1, 2011 · The model was extended to investigate the collective dynamics of periodic nonlinear two-dimensional arrays, and two applications have been considered: (i) a 2D array of coupled pendulums under ...

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WebThe dynamic analysis of large area space structures is restricted by cost and utter size of the computer analysis. An efficient analysis must take advantage of construction periodicity inherent in many structures. In the analysis described here a finite element transfer matrix method is employed to eliminate internal degrees of freedom from the basic unit of a … WebJun 1, 1986 · Dynamics of rotationally periodic structures. Internat. J. Numer. Meths. Engrg. (1979) D.J. Mead Wave propagation and natural modes in periodic systems. J. Sound Vibration (1975) View more references. Cited by (71) Anisotropic yield models for lattice unit cell structures exploiting orthotropic symmetry.

WebJul 1, 2007 · Periodic forced response of structures having three-dimensional frictional constraints. Journal of Sound and Vibration, 229 (4) (2000), pp. 775-792. ... Dynamics of rotationally periodic structures. International Journal for Numerical Methods in Engineering, 14 (1979), pp. 81-102. WebMay 17, 2012 · Survey on Equivalent Continuum Modeling for Truss Structures and Their Nonlinear Dynamics and Vibration Control 22 October 2024 Journal of Vibration …

WebMar 16, 2009 · Tang, J. and Wang, K.W. 1999a ``Vibration Control of Rotationally Periodic Structures using Passive Piezoelectric Shunt Networks and Active Compensation, '' Journal of Vibration and Acoustics, Transactions of the ASME, 121(3) ... Dynamics of periodic spring-mass chain coupled with an electric transm... Go to citation Crossref Google Scholar. WebDec 1, 2002 · On the other hand, the wheel is a typical rotating structure and usually designed into structure consisting of rotationally repetitive modules [11]. Moses et al. [12] studied the topological ...

WebDYNAMICS OF ROTATIONALLY PER1OL)IC STRUCTURES 83 analysis of the structure, provided it is linearly elastic. Furthermore it is not confined to vibration, but can be used …

WebMay 2, 2014 · Prime examples of rotationally periodic structures are bladed disks in turbomachinery, where several characteristic dynamic properties of periodic structures … rcf residential care facilityWebadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A rcf romaniaWebSep 16, 2015 · Ring periodic structures are widely spread in engineering applications, where natural frequencies can split due to the deviation from axisymmetry. ... 2 Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin, P. R. China. ... Spatial modulation of repeated vibration modes in rotationally periodic structures. rc/frpWebJan 1, 2011 · Dynamics of rotationally periodic structures. Article. Jan 1979; INT J NUMER METH ENG; D. L. Thomas; The paper considers the finite element analysis of … r. c. from transformersWeb2. Rotationally Periodic Structures. A bladed disk or drum equipped with blades is said to have cyclic symmetry, with an interblade phase angle of .It is possible to analyze the complete structure by considering only one substructure [13, 14].Considering two points at the same relative position in two adjacent sectors, the free vibration modes of cyclic … rc/frpl是什么材质WebOct 3, 2011 · The proposed method of analysis is based on the general theory of spatially periodic structures. The main feature of this theory is the possibility to apply Discrete Fourier Transform (DFT) in order to reduce a large system of q (2 N + 1) linear stiffness equilibrium equations to a set of 2 N + 1 uncoupled systems of q equations each. rc f schlepp treffen 2022WebDynamics of rotationally periodic large space structures. The dynamic analysis of large area space structures is restricted by cost and utter size of the computer analysis. … rcf sedan