Validity check of the numerical model by applying reduction approach

Abstract

The purpose of this study is to develop an efficient detection method of difference in the physical property between an actual structure and a numerical model for the precise numerical modeling of the structure. We had proposed a fundamental detection method, but it has turned out that it is sensitive to measurement noise. Therefore, we propose a reduction method of degrees of freedom at the coupling dofs by using singular value decomposition which reduces influences of measurement error. We confirmed that the influence of noise by the boundary constraint method is greatly reduced in the simplified structure model and the validity of the proposed method is confirmed.