Modeling geometric mistuning of a bladed rotor: Modified Modal Domain Analysis

Alok Sinha, Yasharth Bhartiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Modified Modal Domain Analysis (MMDA) is a novel method for the development of a reduced-order model of a bladed rotor with geometric mistuning. This method utilizes proper orthogonal decomposition of Coordinate Measurement Machine (CMM) data on blades' geometries, and sector analyses using ANSYS and solid modeling. In this paper, the algorithm to compute reduced-order mass and stiffness matrices from ANSYS sector analyses are provided and numerical results dealing with variations in natural frequencies and forced response are presented for different patterns of geometric mistuning.

Original languageEnglish (US)
Title of host publicationIUTAM Symposium on Emerging Trends in Rotor Dynamics - Proceedings of the IUTAM Symposium on Emerging Trends in Rotor Dynamics
Editors[email] kgupta@mech.iitd.ac.in Gupta
PublisherSpringer Verlag
Pages177-184
Number of pages8
ISBN (Print)9789400700192
DOIs
Publication statusPublished - Jan 1 2011
EventIUTAM Symposium on Emerging Trends in Rotor Dynamics, 2009 - New Delhi, India
Duration: Mar 23 2009Mar 26 2009

Publication series

NameIUTAM Bookseries
Volume25
ISSN (Print)1875-3507

Other

OtherIUTAM Symposium on Emerging Trends in Rotor Dynamics, 2009
CountryIndia
CityNew Delhi
Period3/23/093/26/09

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Acoustics and Ultrasonics
  • Mechanical Engineering

Cite this

Sinha, A., & Bhartiya, Y. (2011). Modeling geometric mistuning of a bladed rotor: Modified Modal Domain Analysis. In . K. I. A. I. Gupta (Ed.), IUTAM Symposium on Emerging Trends in Rotor Dynamics - Proceedings of the IUTAM Symposium on Emerging Trends in Rotor Dynamics (pp. 177-184). (IUTAM Bookseries; Vol. 25). Springer Verlag. https://doi.org/10.1007/978-94-007-0020-8-16