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Research on structures and advanced composites

JAXA Supercomputer System Annual Report February 2021-January 2022

Report Number: R21EA1601

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Toshiya Nakamura, Senior Chief Officer of Fundamental Aeronautics Research, Aeronautical Technology Directorate
  • Contact Information: Digital Structures and Materials Technology Team, Aircraft Lifecycle Innovation Hub, Yuichiro Aoki(aoki.yuichiro@jaxa.jp)
  • Members: Yuichiro Aoki, Toshiyuki Kasahara, Hiroki Kawabe

Abstract

Topology optimization was applied to the design of the wing structure of a transport eVTOL, and a demonstration study from design to manufacturing was conducted to confirm its feasibility.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

To perform numerous cases of topology optimization and obtain numerous design idea.

Achievements of the Year

Topology optimization was applied to the design of the wing structure of a transport eVTOL, and a comprehensive study was conducted from design to manufacturing. As a result, it was confirmed that by appropriately converting the optimal reinforcement plan(Fig.1) obtained by topology optimization into path data(Fig. 2) for TFP (Tailored Fiber Placement), it is possible to fabricate an integrated carbon fiber preform(Fig. 3), which can be fabricated as a composites structural member(Fig.4).

Annual Reoprt Figures for 2021

Fig.1: Optimal reinforcement layout obtained by topology optimization(Contour: density ratio)

 

Annual Reoprt Figures for 2021

Fig.2: Composites fabrication process

 

Annual Reoprt Figures for 2021

Fig.3: Carbon fiber preforms fabricated by tailored fiber placement

 

Annual Reoprt Figures for 2021

Fig.4: Implementation in eVTOL mockup

 

Publications

- Non peer-reviewed papers

Yuichiro Aoki et. al., Development of eVTOL airframe structure desgned by topology optimization, Reinforced Plastics, Vol 68, No. 3, p.89-91, March 2022

- Invited Presentations

Yuichiro Aoki, Pursuit of novel light weight composite structures, 2nd International Conference on Additive Fabrication of Composites, 23-24 November 2021

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: Automatic Parallelization
  • Number of Processes: 2 - 200
  • Elapsed Time per Case: 3600 Second(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.00

 

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name CPU Resources Used
(Core x Hours)
Fraction of Usage*2(%)
TOKI-SORA 0.00 0.00
TOKI-ST 2592.06 0.00
TOKI-GP 0.00 0.00
TOKI-XM 0.00 0.00
TOKI-LM 0.00 0.00
TOKI-TST 0.00 0.00
TOKI-TGP 0.00 0.00
TOKI-TLM 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 15.00 0.01
/data and /data2 51350.00 0.55
/ssd 150.00 0.04

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 0.00 0.00

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.

 

ISV Software Licenses Used

ISV Software Licenses Resources
ISV Software Licenses Used
(Hours)
Fraction of Usage*2(%)
ISV Software Licenses
(Total)
0.00 0.00

*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.

JAXA Supercomputer System Annual Report February 2021-January 2022


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"Annual Report" available

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To use JSS3, please refer to "How to use JSS3" page .

Location

Chofu Aerospace Center
7-44-1 Jindaiji Higashi-machi, Chofu-shi, Tokyo