2412 CADデータフィッティングメッシュモーフィング技術の開発(OS3 デジタルエンジニアリング)

Abstract

We developed a mesh morphing technique, which can be used to change the shape of existing analytical mesh models, and generated a mesh model for a new shape by morphing the mesh model for the previous one. Therefore, our method is suitable to use for analysis during the early stage of design because it reduces the amount of time required to generate analytical mesh models. However, this technique is impossible to morph a free-form surface, and to change surface type. Therefore, we developed the fitting morphing technique for solving the problem. This technique is possible to morph based on specification of the STL data as morphed shape and indication of fitting nodes and movable nodes. We confirmed that this technique can be morphed to free-form surface from cylindrical surface by application to the piston head model in 2 seconds. Futhermore, the technique can be morphed to maintain the boundary of the shape by application to the gear model.