所報 103

42/50

－　　－40Yasukazu NISHIAssociate Professor, Department of Conceptual DesignYasukazu Nishi received his B.E. and M.E. degrees in mechanical engineering from Nihon University in 1989 and 1991, respectively. He joined JFE Steel Corporation (formerly NKK Corporation) in 1991. Nishi has been with Nihon University since 1993. Currently, he is an associate professor at the College of Industrial Technology, Nihon University, and an Executive Board Member and an instructor of Fukagawa Firearms Safety Association supported by Fukagawa Police Station of MPD.Nishi’s research fields of interest are computational mechanics, knowledge informatics and sports engineering (clay target shooting). He is a member of The Japan Society for Computational Engineering and Science (JSCES), International Association for Computational Mechanics (IACM), Japanese Orthodontic Society (JOS) and Japan Clay Target Shooting Association (JCTSA).Research Achievements1) Study on Optimal Design of Closing Arch Wire in Orthodontics by Using Finite Element Analysis, 6th Pacif-ic- Asia Conference on Mechanical Engineering, Aug. 2017.2) Consideration of Compacting Design for Orthodontic Ceramic Bracket by Using FEA, 22nd JSCES Con-ference, May 2017.3) Study for the Effective Designs of Orthodontic Ceramic Brackets, 75th Annual Meeting of JOS, Nov. 2016.4) Development of Cosmetic Orthodontic Bracket and Bracket Cover, 11th World Congress on Computa-tional Mechanics (WCCM XI), Jul. 20145) Method for Displaying Load Transfer Displacement of Object, Patent No. 4389060, Japan Patent Office, Oct. 2009.Stress on teeth from arch wire with closing loops11-400-300-200-1000100200300400123567Stress[MPa]Tooth numberX directionY directionZ direction123567General ceramic bracket for orthodontics(large, uncomfortable, unwieldy)Improved ceramic bracket(compact, comfortable, wieldy)