Brief History   Research Topics   Lecture   Link   Japanese Page   (Feb. 2019)

Welcome to MK's page !!

MY NAME:

Mao Kurumatani

(Drawn by a portrait painter in Minneapolis, USA, 2011)

AFFILIATION:

Ibaraki University
Graduate School of Science and Engineering
Department of Urban and Civil Engineering
Associate Professor

RESEARCH FIELD

Computational Mechanics, Applied Mechanics, Computer Simulation

E-MAIL

mao.kurumatani.jp(a)vc.ibaraki.ac.jp

ADDRESS

Hitachi Campus, S3-4F (W-406),
4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan

EDUCATION

B. Eng., Civil Engineering, Tohoku University, Japan, March 2002
M. Eng., Civil Engineering, Tohoku University, Japan, March 2004
D. Eng., Civil Engineering, Tohoku University, Japan, March 2007

EMPLOYMENT

JSPS (Japan Society for the Promotion of Science) Research Fellow, April 2007 - March 2009
Assistant Professor, Graduate School of Engineering, Tohoku University, April 2009 - March 2010
Assistant Professor, Department of Urban and Civil Engineering, Ibaraki University, April 2010 - March 2011
Lecturer, Department of Urban and Civil Engineering, Ibaraki University, April 2011 - March 2014
Associate Professor, Department of Urban and Civil Engineering, Ibaraki University, April 2014 - Present

AWARDS

2007 Outstanding Paper Award, Japan Society for Computational Engineering and Science
2010 Special Graphics Award, Japan Society for Computational Engineering and Science
2014 Outstanding Paper Award, Japan Society for Computational Engineering and Science
2015 Young Researcher Paper Award, Japan Society for Computational Engineering and Science
2017 Outstanding Paper Award, Applied Mechanics Division, Japan Society for Civil Engineering
2017 Best Graphics Award, Japan Society for Computational Engineering and Science
2018 Special Graphics Award, Japan Society for Computational Engineering and Science

RESEARCH: Finite Cover Method

 
Overview:
The finite cover method (FCM) for the analysis of heterogeneous solids have been developed. The FCM enables us to simulate heterogeneous solids using a regularly structured mesh independently of physical geometries. The crack propagation behavior can also be simulated by the FCM with a regularly structured mesh. The above numerical results demonstrate the capabilities of the FCM for the analysis of heterogeneous solids.
Key Words:
finite cover method, level set, regularly structured mesh, crack propagation, heterogeneous solids
Publications:
  • Terada, Kurumatani: Performance assessment of generalized elements in the finite cover method, Finite Elements in Analysis and Design, 2004.
  • Terada, Kurumatani: An integrated procedure for structural analysis with the finite cover method, International Journal for Numerical Methods in Engineering, 2005.
  • Kurumatani, Terada: Finite cover method with mortar elements for elastoplasticity problems, Computational Mechanics, 2005.
  • Terada, Maruyama, Kurumatani: Eulerian finite cover method for quasi-static equilibrium problems of hyperelastic bodies, Communications in Numerical Methods in Engineering, 2007.
  • Kurumatani, Terada: Finite cover method with multi-cover-layers for the analysis of evolving discontinuities in heterogeneous media, International Journal for Numerical Methods in Engineering, 2009.
  • Okazawa, Terasawa, Kashiyama, Kurumatani, Terada: Eulerian finite cover method for solid dynamics, International Journal of Computational Methods, 2010.
  • Terada, Kurumatani: Two-scale diffusion-deformation coupling model for material deterioration involving micro-crack propagation, International Journal for Numerical Methods in Engineering, 2010.
  • Kurumatani, Terada: A method of global-local analyses of structures involving local heterogeneities and propagating cracks, Structural Engineering and Mechanics, 2011.

RESEARCH: Extended finite element method

Overview:
The extended voxel finite element method has been developed to simulate mechanical behavior of micro- or meso-structure of heterogeneous materials. The method consists of the extended finite element method and voxel finite element method, which allows the finite element analysis of heterogeneous materials using a voxel mesh generated independently of physical geometries. The above numerical result shows the stress distribution of concrete's meso-structure composed of mortar and coarse aggregates.
Key Words:
extended voxel finite element method, level set, enrichment, 3D meso-structure, concrete
Publications:
  • Kurumatani, Kawase: Extended voxel finite element method and its evaluation, Transactions of JSCES, 2015 (in Japanese).

RESEARCH: Damage model for quasi-brittle materials

Overview:
A damage model based on fracture mechanics of quasi-brittle materials has been proposed. The damage model can be used for the simulation of crack growth in quasi-brittle materials such as concrete. The crack behavior obtained by the damage model presents little dependence of mesh size. Good agreements are also found between the numerical and experimental results.
Key Words:
damage model, fracture mechanics, cohesive crack growth, quasi-brittle materials
Publications:
  • Kurumatani, Terada, Kato, Kyoya, Kashiyama: An isotropic damage model based on fracture mechanics for concrete, Engineering Fracture Mechanics, 2016.

RESEARCH: Fracture simulation of reinforced concrete

Overview:
A method of simulating cohesive fracture behavior of reinforced concrete has been developed. The method consists of the damage model for concrete and the plasticity model for steel, which is incorporated with the finite element analysis. The upper left result shows that the 3D geometry and distribution of cracks in reinforced concrete, which agrees with experimental results, can be simulated. To simulate the chloride penetration in concrete, mass transfer analysis of chloride ions was combined with the crack propagation analysis with the damage model. The upper right result shows the distribution of chloride ion along with the internal cracks in concrete.
Key Words:
damage model, cohesive fracture, plasticity, 3D fracture simulation, reinforced concrete
Publications:
  • Kurumatani, Anzo, Kobayashi, Okazaki, Hirose: Damage model for simulating chloride concentration in reinforced concrete with internal cracks, Cement and Concrete Composites, 2017.
  • Kurumatani, Soma, Terada: Simulations of cohesive fracture behavior of reinforced concrete by a fracture-mechanics-based damage model, Engineering Fracture Mechanics, 2018.

LECTURE @Ibaraki Univ


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