7 citations · 13 across the 14 of their papers we have counts for
17 papers
A unified description of flow-induced scission of wormlike micelles under shear and extensional flows
Yusuke Koide, Takato Ishida, Takashi Uneyama +1
We investigate flow-induced scission of wormlike micelles under different flow kinematics using dissipative particle dynamics simulations of surfactant solutions in shear, uniaxial…
The hypoexponential form for the fiber-length distribution in thermoplastic composites revisited: finite initial length, cascade fracture, and its mechanistic status
Yuichi Masubuchi
In a previous work [Masubuchi et al., Compos. Sci. Technol. 134, 43 (2016)], a fiber-length distribution function was proposed as the hypoexponential, or Erlang-type, convolution o…
Stress Drops Associated with Surface Crack Formation in Photo-aged Polypropylene during Three-Point Bending
Kazuya Haremaki, Yusuke Koide, Takashi Uneyama +2
Using three-point bending, this study investigates surface-crack formation in photo-aged polypropylene (PP) that has a depth-dependent aging gradient. PP undergoes embrittlement un…
A Generalized Mechanical Model for the Cycle Rank Dependence of Stretch at Break in Phantom Chain Star Polymer Networks
Yuichi Masubuchi, Takato Ishida, Takashi Uneyama
A simple mechanical model was recently proposed to explain the universality of stretch at break (λ_b) as a function of cycle-rank density (ξ) in phantom-chain network simulations […
Statistics of rupture in phantom chain network simulations
Yuichi Masubuchi, Takato Ishida, Takashi Uneyama
Phantom chain simulations have shown that the mean rupture properties of star polymer networks collapse onto master curves against the cycle rank density . This study revisits t…
Effect of flow kinematics on extensional viscosity of dilute polymer solutions
Yusuke Koide, Takato Ishida, Takashi Uneyama +1
We investigate the effect of flow kinematics on the extensional viscosity of dilute polymer solutions by conducting dissipative particle dynamics simulations under uniaxial, planar…
Relation between extensional viscosity and polymer conformation in dilute polymer solutions
Yusuke Koide, Takato Ishida, Takashi Uneyama +1
We investigate extensional viscosity and polymer conformation in dilute polymer solutions under uniaxial extensional flow using dissipative particle dynamics simulations. At high e…
A Review on Molecular Simulations for the Rupture of Polymer Networks
Yuichi Masubuchi, Takato Ishida, Yusuke Koide +1
Molecular simulations provide a powerful means to unravel the complex relationships between network architecture and the mechanical response of polymer networks, with a particular…
Influence of Stretching Boundary Conditions on Fracture in Phantom Star Polymer Networks: From Volume to Cross-sectional Area Conservation
Yuichi Masubuchi, Takato Ishida, Yusuke Koide +1
This study systematically investigates the effect of stretching boundary conditions, ranging from conservation of cross-sectional area to conservation of volume, on the rupture beh…
Steady-state extensional viscosity of wormlike micellar solutions via dissipative particle dynamics simulations
Yusuke Koide, Takato Ishida, Takashi Uneyama +1
We investigate the steady-state extensional viscosity of wormlike micellar solutions using dissipative particle dynamics simulations. As the extension rate increases, the steady-st…
Direct observation of the compression behavior of polystyrene microbeads in a diamond anvil cell
Haruto Moriguchi, Ken Niwa, Masashi Hasegawa +4
The pressure dependence of the bulk modulus of glassy polystyrene (PS) was measured in the relatively high-pressure regime, up to 6 GPa, at ambient temperature. For the measurement…
Effects of Stirring Time on Formation of Microplastics Fragmented from Photo-aged Polypropylene
Kazuya Haremaki, Takumitsu Kida, Yusuke Koide +3
This paper examines the evolution of microplastic (MP) size distributions fragmented from photo-aged polypropylene (PP) in stirred water. PP specimens fragmented into MPs with thei…
Nonmonotonic concentration dependence of the self-diffusion coefficient of surfactants in wormlike micellar solutions
Yusuke Koide, Takato Ishida, Takashi Uneyama +1
We investigate the concentration dependence of surfactant diffusion in wormlike micellar solutions using dissipative particle dynamics simulations. The simulations show that the se…
Coarse-Grained Molecular Dynamics Simulations for Oxidative Aging of Polymers under Various O2 Concentration
Takato Ishida, Kazuya Haremaki, Yusuke Koide +2
Modeling of polymer oxidative aging has been actively studied since the 1990s. Insights from these studies suggest that the transport of oxygen and radicals significantly influence…
Reverse non-equilibrium molecular dynamics simulations of a melt of Kremer-Grest type model under fast shear
Tatsuma Oishi, Yusuke Koide, Takato Ishida +3
Although the reverse non-equilibrium molecular dynamics (RNEMD) simulation method has been widely employed, the range of applicability is yet to be discussed. In this study, for th…
Dissipative particle dynamics simulation plus slip-springs for entangled polymers with various slip-spring densities
Yuichi Masubuchi, Hong-Xia Guo, Fan Wang +5
Slip-spring models are valuable tools for simulating entangled polymers, bridging the gap between bead-spring models with excluded volume and network models with presumed reptation…
Effects of attractive inter-particle interaction on cross-transport coefficient between mass and heat in binary fluids
Tatsuma Oishi, Yuya Doi, Takashi Uneyama +1
In some binary fluids, mass transport is observed under a temperature gradient. This phenomenon is called the Soret effect. In this study, we discuss the influence of inter-particl…