earticle

영어

This paper provides the results on the study of thickness optimization of plates. The objective of this study is to find the optimum thickness distribution of the plates. In particular, both fundamental frequency to be maximized and strain energy to be minimized are respectively considered as the objective function with the volume constraint and the numerical results obtained from both optimization problems are then consistently compared. The computer-aided geometric design (CAGD) such as Coon patch representation is used to represent the thickness distribution of plates. In order to calculate strain energy and natural frequency of the plate, a reliable degenerated shell finite element is adopted. Robust optimization algorithms available in the optimizer DoT are used in the optimization. Finally, square plate is analyzed to provide the
comparative results on optimum thickness distribution of plates according to different essential boundary condition.