JAXA Supercomputer System Annual Report April 2016-March 2017

Report Number: R16E0071

• Responsible Representative: Yutaka Iwahori(Aeronautical Directorate, Structure and Advanced Composite Technology Reasearch Unit)
• Contact Information: Akinori Yoshimura(yoshimura.akinori@jaxa.jp)
• Members: Akinori Yoshimura
• Subject Category: Basic Research(Numerical analysis,other )

Abstract

JAXA contributes to the SIP (Cross-ministerial Strategic Innovation Promotion) program, which is governed by Cabinet Office, Government of Japan. JAXA takes charge high fidelity modeling of the polymer matrix composites for aircraft structure. The calculation for the modeling is performed in this topic.

Goal

Please refer http://www.jst.go.jp/sip/dl/k03/jst_pamphlet_english.pdf .

Objective

Please refer http://www.jst.go.jp/sip/dl/k03/jst_pamphlet_english.pdf .

References and Links

Please refer http://www.jst.go.jp/sip/dl/k03/jst_pamphlet_english.pdf .

Use of the Supercomputer

Supercomputer was used for the explicit finite element damage simulation of the open hole tensile (OHT) test against CFRP laminate.

Necessity of the Supercomputer

Huge number of elements are needed for detailed damage simulation in CFRP. Application of the supercomputer system makes such high-computational-cost calculation possible.

Achievements of the Year

Damage simulation of CFRP under open-hole tensile (OHT) test was performed using ECDM (Enhanced Continuum Damage Mechanics) model, which was damage model developed in JAXA.

Simulation was performed using ABAQUS/Explicit 2016 on JSS2 system. Each ply of the CFRP laminate was modeled by one continuum shell element in the thickness direction. ECDM model was implemented using usersubroutine of ABAQUS.

Figure 1 shows model overview, and Figure 2 shows the predicted damage. Damage area and strength will be compared to the test results.

Fig.1:Model overview of the Open-hole-tension simulation

Fig.2:Predicted damage

Publications

N/A

Computational Information

• Parallelization Methods: Process Parallelization
• Process Parallelization Methods: MPI
• Thread Parallelization Methods: n/a
• Number of Processes: 12
• Number of Threads per Process: 1
• Number of Nodes Used: 1
• Elapsed Time per Case (Hours): 60
• Number of Cases: 3

Resources Used

Total Amount of Virtual Cost(Yen): 37,403

Breakdown List by Resources

Note: Virtual Cost=amount of cost, using the unit price list of JAXA Facility Utilization program(2016)

JAXA Supercomputer System Annual Report April 2016-March 2017