Sensitivity derivatives of eigendata of one-dimensional structural systems

V. R. Murthy, Yu An Lin, Steven W. O'Hara

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

A general formulation based on the transfer matrix is presented to calculate the sensitivity derivatives of eigenvalue problems of one-dimensional structural systems. The method is equally applicable to any discrete or distributed system of one variable. The formulation is applied to determine the sensitivity derivatives of eigendata of a rotating helicopter blade and also to an optimization problem of a cantilever beam with frequency constraints. It is found that the computational efficiency of the present method is superior to those of the existing methods by an order of magnitude and that this efficacy improves with increasing numbers of design parameters and degrees of freedom.

Original languageEnglish (US)
Pages (from-to)115-122
Number of pages8
JournalAIAA journal
Volume38
Issue number1
DOIs
StatePublished - Jan 2000

ASJC Scopus subject areas

  • Aerospace Engineering

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