Pages 143-144
This paper describes a microscopic structural optimization of fiber reinforced plastics using spatial estimation and a gradient optimization method. A residual component of a homogenized elastic tensor after microscopic fracture is maximized. Fixed grid model is used as microscopic FRP model. Homogenization method is used in order to calculate a macroscopic homogenized elastic tensor. A solution space is estimated using the Kriging method. The Grauss type semivariogram model is adopted in this paper. Gradient method is suitable to solve the optimization problem, which is estimated using the Kriging method, because gradient components on an estimated surface can be obtained without using a finite differential. In this paper, CSSL method is used as an optimizer. Using the proposed method, an estimated optimum solution to maximize the residual rigidity of GFRP is obtained, a validity and effectiveness of the method is confirmed.
