2110 変形後表面形状最適化問題による角膜屈折手術へのアプローチ(OS20 バイオ・人間と設計,未来社会を支えるものづくりとひとづくり(設計・システムから))

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The structural profile under the working load is critical in certain cases where structural shape is directly related to the structural function. The deformed profile is a primal concern, for instance, for the frame structures of precision instruments, and the backstructure of reflectors. Such requirement appears not only at the design stage of the structures but also at the maintenance and/or adjustment stages under the variation of working load, the degeneration of structural properties and so on. In this study, the shape optimization problem of continuum structure is studied for the prescribed deformation profile under the working load. The shape index measures the difference between the target profile given a priori and the deformed structural profile of the designated surface of the continuum body. The shape optimization problem is then formulated as the minimization of the shape index under the constraints of the trimming operation that allows only the local volume reduction at every point of the surfaces of continuum body from current profile. The secondary deformation due to such trimming operation is taken into the evaluation of the subsequent determination of trimming volume. The proposed trimming process has been applied for the planning of corneal refractive surgery and it has been confirmed that the specified structural profile has been realized only by the trimming operation through the proposed process effectively.
社団法人日本機械学会の論文
2006-11-14

2110 変形後表面形状最適化問題による角膜屈折手術へのアプローチ(OS20 バイオ・人間と設計,未来社会を支えるものづくりとひとづくり(設計・システムから))

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