Finite Element Analysis is widely recognised as a useful design tool in every product development scene for predicting various characteristics of predetermined structures. On the other hand, requirement for easy-to-use shape optimization procedure for achieving design objectives is becoming higher. Although basis vector method is a typical shape optimization procedure, it requires cost and knowledge to prepare several basis vector models before the analysis is made. In this study, an easy 3D shape optimization method for FEM solid element model is proposed. It does not depend on basis vector method, but combines our custom simple program with MSC/NASTRAN numerical value optimizer which is widely adopted for product development.
