| Title |
Static Model-Based Data Expansion and Update of Parameter Matrix |
| Authors |
송준혁(Song, Jun-Hyeok) ; 은희창(Eun, Hee-Chang) |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.1.239 |
| Keywords |
update of stiffness matrix; data expansion; rotation; measurement; generalized inverse matrix |
| Abstract |
The purpose of this study is to present a method of updating the model-based stiffness matrix using the measured data in static system and
expanding to the displacements at all degrees of freedom. Using the measured data set as a constraint, the mathematical form of the updated
stiffness matrix is derived using the least squares method to minimize the difference between the analytical and actual stiffness matrices. The
expanded displacement responses include the rotation responses. The validity of the proposed method is illustrated in two numerical examples
to update the stiffness matrix and expand the displacements of a cantilevered beam and a truss structure. |