NAGAI Gakuji

J-GLOBAL         Last updated: Jul 2, 2019 at 02:42
NAGAI Gakuji
Gifu University
Faculty of Engineering

Research Areas


Academic & Professional Experience

Gifu University Faculty of Engineering, Department of Mathematical and Design Engineering

Published Papers

NAGAI Gakuji(Gifu Univ),HAYASHI Takamasa(Gifu Univ.),TAKEKAWA Toshihisa(Univ. of Tokyo)
Vol. 2(No. 10) 1307-1317   Oct 2008
Tamagawa H(Gifu Univ.),Kikuchi K.(Tohoku Univ.),Nagai G.(Gifu Univ.)
163 356-362   Aug 2010
GPU Acceleration of stress analysis of compoiste materials by voxel finite element method
2012 1-11   Feb 2012


Gakuji Nagai, Takahiro Yamada, Katsuhiko Watanabe
Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   70 412-419   Mar 2004
An embedded discontinuous finite element based on the enhanced assumed strain method is used to model interfaces between granular and matrix phases. Each element is defined by a unit cube whose vertices are the eight nearest sampling points of 3-D...
Gakuji Nagai, Yuta Ueda, Yosuke Takai, Makoto Tsukino
ECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers   6700-6708
We present the GPU implementation of digital-image-based FEM computation with CUDA programming language and show that via numerical experiments its performance on Nvidia's GPU, GTX 580 is several times faster than recent Intel Core i7 PC (four thr...
Yosuke Takai, Gakuji Nagai
Transactions of the Japan Society for Computational Engineering and Science   2012 2
To farther accelerate the three-dimensional two-scale stress analyses of composite material with iterative conjugate gradient method and voxel finite element method, we propose a code implementation for GPU. In the framework, several specialized a...
Hirohisa Tamagawa, Keiko Kikuchi, Gakuji Nagai
Sensors and Actuators, A: Physical   163 356-362
A thermo-responsive bimorph actuator consisting of all-polymeric components, primarily a polyvinylchloride (PVC) plate and a carbon fiber-reinforced plastic plate (CFRP), was fabricated. The strain change of the CFRP plate resulting from environme...
Jacob Fish, Wen Chen, Gakuji Nagai
International Journal for Numerical Methods in Engineering   54 347-363
Three non-dispersive models in multi-dimensions have been developed. The first model consists of a leading-order homogenized equation of motion subjected to the secularity constraints imposing uniform validity of asymptotic expansions. The second,...

Books etc

Mar 2005   
Dec 2008   
Encyclopedia of Thermal Stresses
Hetnarski, Richard B. (Ed.)

Conference Activities & Talks

Efficient synthesis of [methyl-11C]thymidine and its stable analog 4’-[methyl-11C]thiothymidine based on the Pd0-mediated rapid C-[11C]methylation, International Chemical Congress of Pacific Basin Societies
Sep 2005   
Efficient synthesis to supply TIC derivatives with antiapoptotic activity, International Confernce on Fatigue Science
Mar 2006   
Highly efficient, practical syntheses of [methyl-11C]thymidine and its stable analogue 4’-[methyl-11C]thiothymidine by Pd0-mediated rapid C-[11C]methylations
May 2006   
Pd0–mediated rapid coupling of methyl iodide with excess amounts of benzyl- or cinnamylboronic acid esters (sp3–sp3 type coupling) for the incorporation of positron–emitting 11C radionuclide into an organic franework
May 2006   
Role of HMPA and other additives in selective monoalkylation of the lithium enolate with an alkyl halide
Nov 2006   

Research Grants & Projects

Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(B))
Project Year: 2008 - 2009    Investigator(s): Gakuji NAGAI
We developed a numerical procedure in three dimensions to predict electro-mechanical behavior of smart materials such as ferroelectrics and ferroelastics. Proposed procedure has ability to simulate their nonlinear electro-mechanical behavior witho...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2010 - 2012    Investigator(s): Gakuji NAGAI
For sensor or actuator devices using functional materials, which exhibit elect-mechanical or magneto-mechanical coupling, we have developed a numerical simulation procedure not only to predict their physical behaviors but also to utilize the prese...
Japan Society for the Promotion of Science: Grants-in-Aid for Scientific Research
Project Year: 2013 - 2015
Japan Society for the Promotion of Science: Grants-in-Aid for Scientific Research
Project Year: 2013 - 2015