Forced response statistics of a bladed rotor with geometric mistuning

Vinod Vishwakarma; Alok Sinha

doi:10.2514/1.J053423

Forced response statistics of a bladed rotor with geometric mistuning

Vinod Vishwakarma, Alok Sinha

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A study is conducted to demonstrate development of an efficient process to generate the statistics of peak maximum amplitudes via random permutations of blades. It is demonstrated that a new integrally bladed rotor (IBR) can be simulated by randomly rearranging the blades on the rotor. The peak maximum amplitude for this rotor can be calculated via modified modal domain analysis (MMDA) in a computationally efficient manner without requiring any new finite-element (FE) sector analysis. It is also demonstrated that the probability distribution function of peak maximum amplitudes can be generated by repeating this process for a large number of random permutations.

Original language	English (US)
Pages (from-to)	2776-2781
Number of pages	6
Journal	AIAA journal
Volume	53
Issue number	9
DOIs	https://doi.org/10.2514/1.J053423
State	Published - 2015

All Science Journal Classification (ASJC) codes

Aerospace Engineering

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10.2514/1.J053423

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title = "Forced response statistics of a bladed rotor with geometric mistuning",

abstract = "A study is conducted to demonstrate development of an efficient process to generate the statistics of peak maximum amplitudes via random permutations of blades. It is demonstrated that a new integrally bladed rotor (IBR) can be simulated by randomly rearranging the blades on the rotor. The peak maximum amplitude for this rotor can be calculated via modified modal domain analysis (MMDA) in a computationally efficient manner without requiring any new finite-element (FE) sector analysis. It is also demonstrated that the probability distribution function of peak maximum amplitudes can be generated by repeating this process for a large number of random permutations.",

author = "Vinod Vishwakarma and Alok Sinha",

note = "Funding Information: This research has been supported by funds from the U.S. Air Force Research Laboratory (AFRL) and GUIde Consortium at Duke University, Durham, North Carolina. The findings, opinions, and recommendations expressed therein are those of authors and are not necessarily those of Duke University or the AFRL or the GUIde Consortium Members. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

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AU - Vishwakarma, Vinod

AU - Sinha, Alok

N1 - Funding Information: This research has been supported by funds from the U.S. Air Force Research Laboratory (AFRL) and GUIde Consortium at Duke University, Durham, North Carolina. The findings, opinions, and recommendations expressed therein are those of authors and are not necessarily those of Duke University or the AFRL or the GUIde Consortium Members. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2015

Y1 - 2015

N2 - A study is conducted to demonstrate development of an efficient process to generate the statistics of peak maximum amplitudes via random permutations of blades. It is demonstrated that a new integrally bladed rotor (IBR) can be simulated by randomly rearranging the blades on the rotor. The peak maximum amplitude for this rotor can be calculated via modified modal domain analysis (MMDA) in a computationally efficient manner without requiring any new finite-element (FE) sector analysis. It is also demonstrated that the probability distribution function of peak maximum amplitudes can be generated by repeating this process for a large number of random permutations.

AB - A study is conducted to demonstrate development of an efficient process to generate the statistics of peak maximum amplitudes via random permutations of blades. It is demonstrated that a new integrally bladed rotor (IBR) can be simulated by randomly rearranging the blades on the rotor. The peak maximum amplitude for this rotor can be calculated via modified modal domain analysis (MMDA) in a computationally efficient manner without requiring any new finite-element (FE) sector analysis. It is also demonstrated that the probability distribution function of peak maximum amplitudes can be generated by repeating this process for a large number of random permutations.

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Forced response statistics of a bladed rotor with geometric mistuning

Abstract

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