Numerical instability of classical free-interface component mode synthesis techniques

Ronnie Bladh, Christophe Pierre, Matthew P. Castanier

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Two classical free-interface component mode synthesis (CMS) methods are briefly reviewed, and highlighted the sources of numerical instability. In addition, a modest modification to the classical free-interface CMS formulation by Craig and Chang which alleviates the numerical instability suffered by the original method is presented. To support the discussion, the numerical instability is demonstrated with a simple three-dimensional, two-component finite element model.

Original languageEnglish
Pages (from-to)1621-1624
Number of pages4
JournalAIAA journal
Volume41
Issue number8
DOIs
StatePublished - Aug 2003

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