| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
Identification of Damage Parameters Under the Uneven Damage Development in Carbon Fiber Reinforced Plastic |
| Author(s) |
Masahito Ueda, Haiya Yang, Naruki Ichihara, Wataru Iwase, Tetsuya Matsuda, Naoki Morita, Ryoma Aoki, Tomohiro Yokozeki |
| On-Site Speaker (Planned) |
Masahito Ueda |
| Abstract Scope |
A composite pressure vessel is a key component of fuel cell vehicles. The type-IV composite pressure vessel is made of a carbon-fiber-reinforced plastic with a polymer liner and aluminum boss, which stores hydrogen gas at 70 MPa. To design the composite pressure vessel and predict the product lifetime, numerical simulation on the damage evolution due to filling and releasing cycles is indispensable. The continuum damage mechanics is a phenomenological model, which is easy to implement with lower calculation cost in the finite element simulation as compared to the micromechanics model. The continuum damage mechanics model supposes homogenized damages and implements as the material property degradation. The composite pressure vessel includes many defects such as void, gap, overlap, and fiber waviness developed due to the filament winding process. These defects may cause uneven damage development. In this study, the effect of uneven damage development on the damage evolution prediction by continuum damage mechanics was studied. The uneven damage development in an off-axis carbon fiber reinforced plastic laminate was observed experimentally and the damage parameters were identified considering the damage localization. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |