Dynamics of rotationally periodic structures

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August undefined, 2024

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.

Dynamics of rotationally periodic structures - NASA/ADS

WebDynamics 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. … 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 … simplify 16/26

RESPONSE OF MODULATED DOUBLET MODES TO TRAVELLING …

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 ... WebJan 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 … 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 … simplify 16/256

An equation solver for eigenvalue problems of cyclic symmetric structures

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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 … 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 … raymond puluWebSep 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. raymond pugh

"WebJun 2, 2014 · The in-plane wave motion is analytically examined to address the stationary deflection, natural frequency splitting, and mode contamination of the rotationally ring-shaped periodic structures (RRPS). The governing equation is developed by the Hamilton's principle where the structure is modeled as a thin ring with equally-spaced … " - Dynamics of rotationally periodic structures

Dynamics of rotationally periodic structures

Dynamics of Phononic Materials and Structures: Historical Origins ...

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. 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 ...

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Web2. 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 … WebThe method has been implemented in a computer program and is illustrated by analyses of an alternator end winding, a cooling tower with legs, and a wheel of turbine blades. For forced vibration, it is shown that any arbitrary oscillatory force can be decomposed into …

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 … 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.

WebAug 7, 2024 · In a previous study, we proposed a method for the damping of rotationally periodic structures, when a specific mode with n nodal diameters is targeted. The proposed method considers 4n lead zirconate titanate patches (or a multiple of) which can be, either, shunted independently on 4n identical resistor–inductor circuits, or mounted in … WebMay 17, 2012 · Survey on Equivalent Continuum Modeling for Truss Structures and Their Nonlinear Dynamics and Vibration Control 22 October 2024 Journal of Vibration …

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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 … simplify -16/28WebThis research will focus on nonlinear vibrations and wave propagation to enable the development of new multi-functional metamaterial devices. The novel self-adaptive metamaterials use a sliding mass mechanism to tune the bandgap to different frequency ranges. This self-adaptive mechanism will be integrated in periodic and quasiperiodic ... raymond punish episodeWebJul 1, 1999 · This paper proposes a multi-mode vibration suppression scheme for rotationally periodic structures. Identical active-passive hybrid piezoelectric networks … simplify 16/27WebI. Romanescu's 12 research works with 353 citations and 4,379 reads, including: Passive Damping of Rotationally Periodic Structures with Tuned Piezoelectric Inductive Shunt raymond purdyWebJan 1, 1979 · Dynamics of rotationally periodic structures Thomas, D. L. 1979-01-01 00:00:00 Central Electricity Research Laboratories, Leatherhead, Surrey, England … raymond punchy celeste diana marshal zuckWebMay 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 … raymond pumphreyWebApr 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 … simplify 16/30