汎用FEMの援用による複合材料構造の層別最適化  [in Japanese] Layerwise Optimization of Laminated Comoposite Structures by Using a General-Purpose FEM Software  [in Japanese]

The lay-up optimization problem of laminated composite structures is solved by using a general-purpose finite element method software ANSYS to confirm the availability of the layerwise optimization (LO) method. In the LO method that the authors proposed, all layers are assumed first to have zero stiffness but mass and then one dimensional search is applied in each layer starting from the outermost layer to the innermost layer sequentially. After the first cycle solution is found for all the layers, the process is repeated with keeping the angles found in the previous process till the lay-up design is converged. The results showed that the LO method using the ANSYS as a tool for calculating the object function gave valid solutions, when they were compared with those from other methods, for both plate and more complex three-dimensional structure.