Numerical instability of classical free-interface component mode synthesis techniques

TY - JOUR

T1 - Numerical instability of classical free-interface component mode synthesis techniques

AU - Bladh, Ronnie

AU - Pierre, Christophe

AU - Castanier, Matthew P.

PY - 2003/8

Y1 - 2003/8

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0042886060

UR - https://www.scopus.com/pages/publications/0042886060#tab=citedBy

U2 - 10.2514/2.2123

DO - 10.2514/2.2123

M3 - Article

SN - 0001-1452

VL - 41

SP - 1621

EP - 1624

JO - AIAA journal

JF - AIAA journal

IS - 8

ER -