Effects of damping and varying. contact area at blade-disk joints in forced response analysis of bladed disk assemblies

Petrov, E P and Ewins, D J (2006) Effects of damping and varying. contact area at blade-disk joints in forced response analysis of bladed disk assemblies. Journal of Turbomachinery, 128 (2). pp. 403-410. ISSN 0889-504X

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Abstract

An approach is developed to analyze the multiharmonic forced response of large-scale finite element models of bladed disks taking account of the nonlinear forces acting at the contact interfaces of blade roots. Area contact interaction is modeled by area friction contact elements which allow for friction stresses under variable normal load. unilateral contacts, clearances, and interferences. Examples of application of the new approach to the analysis of root damping and forced response levels are given and numerical investigations of effects of contact conditions at root joints and excitation levels are explored for practical bladed disks

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology > TJ Mechanical engineering and machinery
Depositing User: Yevgen Petrov
Date Deposited: 26 Nov 2012 14:18
Last Modified: 26 Nov 2012 14:18
URI: http://sro.sussex.ac.uk/id/eprint/43022
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