Investigation of damping potential of strip damper on a real turbine blade

M. Afzal, I. Lopez Arteaga, L. Kari, V. Kharyton

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

5 Citations (Scopus)

Abstract

This paper investigates the damping potential of strip dampers on a real turbine bladed disk. A 3D numerical friction contact model is used to compute the contact forces by means of the Alternate Frequency Time domain method. The Jacobian matrix required during the iterative solution is computed in parallel with the contact forces, by a quasi-Analytical method. A finite element model of the strip dampers, that allows for an accurate description of their dynamic properties, is included in the steady-state forced response analysis of the bladed disk. Cyclic symmetry boundary conditions and the multiharmonic balance method are applied in the formulation of the equations of motion in the frequency domain. The nonlinear forced response analysis is performed with two different types of boundary conditions on the strip: (a) free-free and (b) elastic, and their influence is analyzed. The effect of the strip mass, thickness and the excitation levels on the forced response curve is investigated in detail.

Original languageEnglish
Title of host publicationASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition
Subtitle of host publicationVolume 7A: Structures and Dynamics
PublisherAmerican Society of Mechanical Engineers
Number of pages12
ISBN (Print)978-0-7918-4983-5
DOIs
Publication statusPublished - 1 Jan 2016
Event2016 ASME Turbo Expo : Turbomachinery Technical Conference and Exposition (GT 2016) - Coex, Seoul, Korea, Republic of
Duration: 13 Jun 201617 Jun 2016

Conference

Conference2016 ASME Turbo Expo : Turbomachinery Technical Conference and Exposition (GT 2016)
Abbreviated titleGT 2016
CountryKorea, Republic of
CitySeoul
Period13/06/1617/06/16

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