Results 1 to 10 of about 78,397 (271)
Crystalline evolutions in chessboard-like microstructures [PDF]
Networks and Heterogeneous Media, 2018 We describe the macroscopic behavior of evolutions by crystalline curvature of planar sets in a chessboard-like medium, modeled by a periodic forcing term. We show that the underlying microstructure may produce both pinning and confinement effects on the
Annalisa Malusa, Matteo Novaga
doaj +4 more sources
Networks and Heterogeneous Media, 2013 In this paper we determine, in dimension three, the effective conductivities of non periodic and high-contrast two-phase cylindrical composites, placed in a constant magnetic field, without any assumption on the geometry of their cross sections.
Mohamed Camar-Eddine, Laurent Pater
doaj +6 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Nuclear Materials and Energy, 2022 Reduced activation ferritic/martensitic (RAFM) steel is an iron-based alloy as a candidate structural material in fusion reactor. This paper evaluates the compatibility of RAFM steel as a choice material for wire arc additive manufacturing (WAAM).
Wei Chen, Haibo Cao, Libin Zhu
doaj +1 more source