A Hybrid Finite Element and Mesh-Free
Particle Method for Disaster-Resilient
Design of Structures
Naoto Mitsume, Shinobu Yoshimura, Kohei Murotani
and Tomonori Yamada
Abstract The MPS-FE method, which is a hybrid method for Fluid-Structure
Interaction (FSI) problems adopting the Finite Element method (FEM) for structure
computation and Moving Particle Semi-implicit/Simulation (MPS) methods for free
surface flow computation, was developed to utilize it in disaster-resilient design of
important facilities and structures. In general free-surface flow simulation using the
MPS method, wall boundaries are represented as fixed particles (wall particles) set
as uniform grids, so the interface of fluid computation does not correspond to the
interface structure computation in the conventional MPS-FE method. In this study,
we develop an accurate and robust polygon wall boundary model, named Explicitly
Represented Polygon (ERP) wall boundary model, in which the wall boundaries in
the MPS method can be represented as planes that have same geometries as finite
element surfaces.
Keywords Fluid-structure interaction Á Finite element method Á Moving particle
Semi-implicit/simulation method Á Mesh-free particle method Á MPS-FE method
1 Introduction
Large-scale facilities such as petrochemical and nuclear power plants, and tsunami
evacuation facilities built along coastal regions are vulnerable to water-related
disasters. The resulting damage to equipment and instruments has the potential to
cause catastrophic harm to people and local society. However, it is economically
difficult to completely prevent the effects of disasters of extreme severity. We need
quantitative measures to minimize the damages and loss. Detailed numerical
computations treating the disasters and damages as Fluid-Structure Interaction
(FSI) problems involving free surface flow give us a measure for disaster-resilient
design of important structures.
N. Mitsume (&) Á S. Yoshimura Á K. Murotani Á T. Yamada
Department of Systems Innovation, University of Tokyo, Bunkyō, Japan
e-mail: Mitsume@save.sys.t.u-tokyo.ac.jp
© The Author(s) 2017
J. Ahn et al. (eds.), Resilience: A New Paradigm of Nuclear Safety,
DOI 10.1007/978-3-319-58768-4_26
303
Particle Method for Disaster-Resilient
Design of Structures
Naoto Mitsume, Shinobu Yoshimura, Kohei Murotani
and Tomonori Yamada
Abstract The MPS-FE method, which is a hybrid method for Fluid-Structure
Interaction (FSI) problems adopting the Finite Element method (FEM) for structure
computation and Moving Particle Semi-implicit/Simulation (MPS) methods for free
surface flow computation, was developed to utilize it in disaster-resilient design of
important facilities and structures. In general free-surface flow simulation using the
MPS method, wall boundaries are represented as fixed particles (wall particles) set
as uniform grids, so the interface of fluid computation does not correspond to the
interface structure computation in the conventional MPS-FE method. In this study,
we develop an accurate and robust polygon wall boundary model, named Explicitly
Represented Polygon (ERP) wall boundary model, in which the wall boundaries in
the MPS method can be represented as planes that have same geometries as finite
element surfaces.
Keywords Fluid-structure interaction Á Finite element method Á Moving particle
Semi-implicit/simulation method Á Mesh-free particle method Á MPS-FE method
1 Introduction
Large-scale facilities such as petrochemical and nuclear power plants, and tsunami
evacuation facilities built along coastal regions are vulnerable to water-related
disasters. The resulting damage to equipment and instruments has the potential to
cause catastrophic harm to people and local society. However, it is economically
difficult to completely prevent the effects of disasters of extreme severity. We need
quantitative measures to minimize the damages and loss. Detailed numerical
computations treating the disasters and damages as Fluid-Structure Interaction
(FSI) problems involving free surface flow give us a measure for disaster-resilient
design of important structures.
N. Mitsume (&) Á S. Yoshimura Á K. Murotani Á T. Yamada
Department of Systems Innovation, University of Tokyo, Bunkyō, Japan
e-mail: Mitsume@save.sys.t.u-tokyo.ac.jp
© The Author(s) 2017
J. Ahn et al. (eds.), Resilience: A New Paradigm of Nuclear Safety,
DOI 10.1007/978-3-319-58768-4_26
303