49 citations · 101 across the 5 of their papers we have counts for
5 papers
Approximation in an optimal design problem governed by the heat equation
Kei Matsushima, Tomoyuki Oka
This paper studies a two-material optimal design problem for the time-averaged duality pairing between a (possibly time-dependent) heat source and the weak solution of an initial-b…
Optimal design problem with thermal radiation
Kosuke Kita, Kei Matsushima, Tomoyuki Oka
This paper is concerned with configurations of two-material thermal conductors that minimize the Dirichlet energy for steady-state diffusion equations with nonlinear boundary condi…
Level set-based multiscale topology optimization for a thermal cloak design problem using the homogenization method
Makoto Nakagawa, Yuki Noguchi, Kei Matsushima +1
Artificially designed composite materials consist of microstructures, that exhibit various thermal properties depending on their shapes, such as anisotropic thermal conductivity. O…
Two-Phase Topology Optimization for Metamaterials with Negative Poisson's Ratio
Daichi Akamatsu, Yuki Noguchi, Kei Matsushima +3
Although recent developments in 3D printing technology have made it possible to fabricate metamaterials with characteristic mechanical properties, it is not easy to fabricate compl…
Exceptional points in cylindrical elastic media with radiation loss
Kei Matsushima, Yuki Noguchi, Takayuki Yamada
Exceptional points (EPs) are singular points on a parameter space at which some eigenvalues (scattering poles) and their corresponding eigenmodes coalesce. This study shows the exi…