Structural dynamics modification using an Emboss

Abstract

Among many SDM(Structural Dynamics Modification) techniques, shape transformation is one of the most effective techniques. The method does not induce mass increase in the base model and non-matching node problem between substructures. In this research embossing is selected as a kind of shape transformation method. Even though embossing is an effective technique, it is difficult to implement in fields. One of the most fatal shortages of embossing method is that it necessitates troublesome re-meshing process in optimization procedures, which lessens effectiveness and usefulness of the method. Initially, equivalent elements concept is tried to describe emboss shapes. The trial parameters are material properties, thickness distribution, and the both. Then, finally, based on the limitation of the equivalent element concept, a convenient and systematic way to describe embossing technique for flat-top embosses is established and the usefulness is verified by means of a few illustrative examples. In summary, the goal of this research is to suggest a method which makes it easy to implement an embossing technique in fields. Then the goal is obtained by introducing a simple concept and a systematic procedure only for specified emboss shape, that is, flat-top emboss shape.