On some regularities in dynamic response of cyclic periodic structures
type: Item
instance of: scholarly article
title: On some regularities in dynamic response of cyclic periodic structures
zbMATH Open document ID: 1015.74017
DOI: 10.1016/S0960-0779(99)00080-6
author: W. Sextro
author: T. Krzyżyński
author: Karl Popp
published in: Chaos, Solitons and Fractals
publication date: 2003-08-05T00:00:00Z
review text: The paper deals with cyclic periodic structures modelling the bladed disk assemblies with friction elements for vibration damping. These elements placed between adiacent blades reduce the vibration amplitudes by means of dry friction resulting from centrifugal forces acting on the elements and relative displacements of blades. However, the application of these friction elements results in an additional dynamical coupling, which together with mistuning of some system parameters (e.g. blade eigenfrequency or contact parameters) can cause a localization of vibration. Here the authors investigate a linear approximation of such a system. The structure composed of cyclic periodic cells modelled each as clamped-free beam and interacting with each other by means of viscoelastic elements of complex stiffness is considered for dynamic system analysis. In the case of free vibrations as well as in the case of steady-state dynamic response to a harmonic pressure load, the authors study a perfect periodic structure and the structures with periodically mistured parameters (blade eigenfrequencies and contact parameters). Some regularities in the dynamic response of the systems with mistuning have been noticed. Despite the fact that only a linear approximation has been used, the results and conclusions can be applied to models with describe the blade interaction in a nonlinear way.
reviewed by: Bingzheng Gai
Mathematics Subject Classification ID: 74H45
Mathematics Subject Classification ID: 74K10
zbMATH DE Number: 1487110
zbMATH Keywords: cyclic periodic structures
zbMATH Keywords: bladed disk assemblies
zbMATH Keywords: vibration damping
zbMATH Keywords: dry friction
zbMATH Keywords: linear approximation
zbMATH Keywords: clamped-free beams
zbMATH Keywords: viscoelastic elements
zbMATH Keywords: steady-state dynamic response
zbMATH Keywords: harmonic pressure load
zbMATH Keywords: mistured parameters
MaRDI profile type: Publication
cites work: Q5819374
cites work: On tuned bladed disk dynamics: Some aspects of friction related mistuning
full work available at URL: s0960-0779(99)00080-6
OpenAlex ID: W2011328024
description: scientific article; zbMATH DE number 1487110