Results 1 to 10 of about 818,216 (304)
Open Ceramics, 2021 The paper represents results of modeling of reaction-diffusion processes that ensure the formation of materials with a regular (periodic) interconnected microstructure.
V.Ya. Shevchenko +2 more
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Design of tunable acoustic metamaterials with periodic piezoelectric microstructure [PDF]
Extreme Mechanics Letters, 2020 An innovative special class of tunable periodic metamaterials is designed, suitable for realising high-performance acoustic filters. The metamaterial is made up of a phononic crystal coupled to local resonators. Such local resonators consist of masses enclosed into piezoelectric rings, shunted by either dissipative or non-dissipative electrical circuit.
Andrea Bacigalupo +2 more
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Nanomaterials, 2021 The formation of melt and its spread in materials is the focus of many high temperature processes, for example, in laser welding and cutting. Surface active elements alter the surface tension gradient and therefore influence melt penetration depth and ...
Theresa Jähnig +2 more
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Size optimization of micro-frame structures for designing multiscale structures
Nihon Kikai Gakkai ronbunshu, 2022 In this paper, we propose a multi-scale optimal design method for determining the member diameters of minute micro-frame structures in a macro-structure. The microstructures and the macrostructure are bridged by the homogenization method.
Yutaro TAKUMI, Masatoshi SHIMODA
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Periodic liquid crystalline waveguiding microstructures
Scientific Reports, 2023 AbstractDifferent methods allowing for creating optical waveguides with liquid–crystal (LC) cores, in which molecules form periodic patterns with precisely controlled periods, are reported. The first one is based on reversible photoalignment with high-resolution selective illumination and allows to control the period of LC molecules inside silica ...
Sławomir Ertman +8 more
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Shape optimum design of porous structure for minimizing maximum thermal stress
Nihon Kikai Gakkai ronbunshu, 2023 In this study, we propose a solution to a shape optimization problem for the strength design of porous structures under thermal loading. The homogenization method is used to bridge the macrostructure and the porous microstructures, in which the elastic ...
Mihiro TORISAKI, Masatoshi SHIMODA
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Concurrent multi-scale shape optimization for micro and macro shape design of structures
Nihon Kikai Gakkai ronbunshu, 2021 In this study, we propose a novel shape optimization method for designing micro- and macro-structures concurrently. We assume the macro-structure consists of several arbitrary domains, which have different periodic micro-structures.
Minami FUJIOKA, Masatoshi SHIMODA
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Micropore shape optimization for natural vibration design of porous structures
Nihon Kikai Gakkai ronbunshu, 2021 In this paper, we present a shape optimization method for periodic microstructures to maximize a specified vibration eigenvalue of a porous macrostructure.
Junpei FUJITA, Masatoshi SHIMODA
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Diffusion in inhomogeneous media with periodic microstructures [PDF]
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2021 AbstractDiffusion in inhomogeneous materials can be described by both the Fick and Fokker–Planck diffusion equations. Here, we study a mixed Fick and Fokker–Planck diffusion problem with coefficients rapidly oscillating both in space and time. We obtain macroscopic models performing the homogenization limit by means of the unfolding technique.
M. Amar, D. Andreucci, E. N. M. Cirillo
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SoftwareX, 2023 This paper presents an ABAQUS™ plug-in for predicting the stiffness of a composite plate with periodic microstructure. The plug-in supports the 3D finite element models of unit cells with in-plane symmetry from a periodic plate. With the help of the plug-
DaJiang Wu +3 more
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