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222 results on '"Todoroki, Akira"'

4. Convolutional Neural Network-based Topology Optimization (CNN-TO) By Estimating Sensitivity of Compliance from Material Distribution

Author

Takahashi, Yusuke, Suzuki, Yoshiro, and Todoroki, Akira

Subjects
Computer Science - Machine Learning, Computer Science - Computational Engineering, Finance, and Science
Abstract

This paper proposes a new topology optimization method that applies a convolutional neural network (CNN), which is one deep learning technique for topology optimization problems. Using this method, we acquire a structure with a little higher performance that could not be obtained by the previous topology optimization method. In particular, in this paper, we solve a topology optimization problem aimed at maximizing stiffness with a mass constraint, which is a common type of topology optimization. In this paper, we first formulate the conventional topology optimization by the solid isotropic material with penalization method. Next, we formulate the topology optimization using CNN. Finally, we show the effectiveness of the proposed topology optimization method by solving a verification example, namely a topology optimization problem aimed at maximizing stiffness. In this research, as a result of solving the verification example for a small design area of 16x32 element, we obtain the solution different from the previous topology optimization method. This result suggests that stiffness information of structure can be extracted and analyzed for structural design by analyzing the density distribution using CNN like an image. This suggests that CNN technology can be utilized in the structural design and topology optimization.

Published
2019

45. 3D compaction printing of a continuous carbon fiber reinforced thermoplastic

Author

Le DUIGOU, Antoine, UEDA, Masahito, KISHIMOTO, Shun, YAMAWAKI, Masao, MATSUZAKI, Ryosuke, TODOROKI, Akira, and HIRANO, Yoshiyasu

Subjects
D. Mechanical testing, Fabrication, Materials science, Thermoplastic, Scanning electron microscope, Compaction, 3D printing, Fused filament fabrication, 02 engineering and technology, Bending, 010402 general chemistry, 01 natural sciences, A. Polymer-matrix composites (PMCs), Ultimate tensile strength, Composite material, chemistry.chemical_classification, E. 3D printing, business.industry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Mechanics of Materials, Ceramics and Composites, 0210 nano-technology, business, A. Carbon fibers
Abstract

形態: カラー図版あり, Physical characteristics: Original contains color illustrations, Accepted: 2020-05-29, 資料番号: PA2120015000

Published
2020

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