| 摘要 |
The present invention addresses the problem of providing an oscillation analysis program which, with respect to a component which is modeled as finite elements in which phase difference accumulation characteristics and flow accumulation characteristics are distributed, is capable of analyzing the bi-directional interaction of the components with an external system in terms of flow and phase difference . This oscillation analysis program comprises: a first step 6 of importing a finite element model of a component of interest modeled with a finite element method program 4 and computing an accumulation characteristic matrix and a connection matrix; a second step 8 wherein after input 7 of an attenuation characteristic into either the accumulation characteristic matrix or the connection matrix as necessary, a phase difference/flow mode matrix and eigenvectors are calculated; and a third step 14 of importing an input phase difference /flow vector for the component of interest obtained from an external system simulator 9, carrying out a mode coordinate transform of the input phase difference/flow vector, calculating a mode vector response, and thereafter carrying out a physical coordinate transform of the mode vector. |
