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Dive into the research topics where Mitsuteru Asai is active.

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Featured researches published by Mitsuteru Asai.


Modelling and Simulation in Materials Science and Engineering | 2007

An iterative solver applied to strongly coupled piezoelectric problems of porous Pb(Zr,Ti)O3 with nondestructive modelling of microstructure

Mitsuteru Asai; Naoki Takano; Yasutomo Uetsuji; Kunihiko Taki

A new preconditioned iterative solver based on the Kryrov subspace method is developed for solving large-scale finite element (FE) models of piezoelectric problems. The system matrix of piezoelectric FE analysis has negative eigenvalues because of coupling terms between mechanical and electrical fields. A general preconditioned iterative solver is ineffective for large-scale piezoelectric FE analysis due to the indefinite system matrix. A block diagonal preconditioner for the piezoelectric finite element method (FEM) is proposed by grouping nodal values as a block. Then the proposed solver is applied to the homogenization method, which can evaluate the effective macroscopic material properties by using FEM. In the FE modelling of complex microstructures, a semi-automatic technique with nondestructive observation provides reasonable 3D micrographs of porous Pb(Zr,Ti)O3 (PZT). The efficiency of the proposed solver is investigated through the homogenization analysis of real porous PZT samples.


Journal of The Society of Materials Science, Japan | 2006

Multi-scale stress analysis of trabecular bone considering trabeculae morphology and biological apatite crystallite orientation

Mitsuhiro Kawagai; Naoki Takano; Takayoshi Nakano; Mitsuteru Asai


Journal of The Society of Materials Science, Japan | 2008

Three-dimensional morphology analysis and finite element modeling of nano particle dispersed materials

Naoki Takano; Mitsuteru Asai; Takahiro Kouda; Kazunobu Hashimoto


Proceedings of the 1992 Annual Meeting of JSME/MMD | 2006

509 Image-based multi-scale analysis for porous piezoelectric materials based on the homogenization method

Mitsuteru Asai; Naoki Takano; Kunihiko Taki; Takashi Ashimori; Takayuki Kusaka; Yasutomo Uetsuji


The Proceedings of The Computational Mechanics Conference | 2011

F406 Monte Carlo Simulation of dynamic problem using Model Order Reduction Technique

Sho Suzuki; Naoki Takano; Mitsuteru Asai


The Proceedings of Mechanical Engineering Congress, Japan | 2011

J122013 Applicability of Fast Dynamic Analysis by Model Order Reduction to Monte-Carlo Simulation

Sho Suzuki; Naoki Takano; Mitsuteru Asai


The proceedings of the JSME annual meeting | 2006

5301 A fast dynamic structure analysis by the model order reduction method

Mitsuteru Asai; Naoki Takano; Toshiyuki Toriyama; Evgenii B. Rudnyi; Jan G. Korvink


The Proceedings of The Computational Mechanics Conference | 2006

303 Simulation-based design of combustor for micro gas turbine engine

Mitsuteru Asai; Yuu Suzuki; Hiroki Yamada; Naoki Takano; Toshiyuki Toriyama; Shohei Ozeki; Cholho Kim


The Proceedings of The Computational Mechanics Conference | 2006

256 MORPHOLOGY ANALYSIS FOR NANO-PARTICLE FILLED MATERIAL

Takahiro Kouda; Kazunobu Hashimoto; Naoki Takano; Mitsuteru Asai


The Proceedings of The Computational Mechanics Conference | 2005

606 CAD-centric global/local modeling for MEMS simulation

Mitsuteru Asai; Naoki Takano; Takeshi Uemura; Pedro V. Marcal

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Yasutomo Uetsuji

Osaka Institute of Technology

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