This research is about SDM (Structural Dynamics Modification) technique using embosses. Embossing is one of shape changing method to improve stiffness a targeting structure. SDM using embosses do not need to add additional mass element ana model of embosses and resulting huge calculation for getting analytical solution of an embossed structure.
The object of this research is to suggest a method to guide placing embossment in a structure to raise its natural frequencies.
Initially, an effective parameter of an emboss is selected by design of experiment method. Then, two methods to optimize model with embossing are suggested, independently. The former is response surface analysis by neural network. And the latter is an indirect method using modal dynamic strain energy.
These two methods are verified through the simulations and found that those are satisfactory to give a guide for embossing structure.
