A NEW COMPONENT MODE SYNTHESIS METHOD - QUASI-STATIC MODE COMPENSATION

A new component mode synthesis method is presented in this paper that combines the computational efficiency of the well-known constraint mod e approach with the dynamic compensation accuracy obtained by higher-o rder expansion methods. Instead of employing static constraint modes, quasi-static modes are used to capture inertial effects of the truncat ed modes. The method is ideally suited for mid-band frequency analysis in which both high-frequency and low-frequency modes may be omitted. A tuning parameter, designated as the centering frequency, controls th e dynamic range of the quasi-static modes. Numerical examples are prov ided which demonstrate the improved accuracy of the proposed method.