Structural dynamics modification via reorientation of modification elements

The present paper describes a structural dynamics modification (SDM) method, labeled as layout reorientation method by attaching and reorienting modification structural elements on the baseline structure. The present method is distinctly different from existing fixed layout pattern SDM methods which utilize a fixed modification layout pattern and vary material properties or geometrical dimensions. The present method determines both the position and orientation of the modification structural elements to be placed on the basic structure. A challenge in the present method is how to resolve grid non-matching problem between the baseline structure and modification elements, for which a virtual interface frame concept between the nodes of the baseline and modification structures is employed. The potential of the present SDM method is demonstrated via numerical examples.