Accelerated Subspace Iteration Method for Computing Natural Frequencies and Mode Shapes of Structures

구조물의 고유진동수 및 모드형상의 계산을 위한 가속화된 부분공간반복법

This paper proposes modified subspace iteration method for efficient frequency analysis of structures. Proposed method uses accelerated Lanczos vectors as starting vectors in order to reduce the number of iterations in the subspace iteration method. Proposed method has better computing efficiency than the conventional method when the number of desired frequencies is relatively small. The efficiency of proposed method is verified through numerical examples.