Abstract
This paper proposes a procedure for predicting the modal data of a thin plate structure with a rib stiffener even when the rib is attached to any location where mode shape data is not defined. This procedure is based on the Structural Dynamics Modification (SDM) method and the mode shape expansion method is incorporated to estimate the mode shape data at the unmeasured points. Numerical results from a thin plate structure with two L-shaped ribs show that the proposed procedure produces the accurate predictions using the estimated mode shape data at the unmeasured points.
