| 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 |
Simulating High Energy Dynamic Impact of IM7/PEKK Continuous Fiber Laminated Thermoplastic Composite Using Notched Coupon Experiments |
| Author(s) |
Javier Buenrostro, Trenton M. Ricks, Sandi G. Miller, Duane M. Revilock, Ashutosh Maurya, Subramaniam Rajan |
| On-Site Speaker (Planned) |
Javier Buenrostro |
| Abstract Scope |
The use of advanced thermoplastic composites (TPC) for structural applications in aerospace and automotive industries has grown increasingly popular due to high performance, high manufactured part output and sustainability. Enhancing verification simulations of the progressive failure in TPCs at the coupon scale is needed to better validate advance composite material models at larger length scales, such as element level panels. MAT213, a tabulated composite material mode, has been developed to simulate high velocity dynamic impact (HEDI) and is integrated in LS-DYNA explicit finite element code. Previous works using MAT213 have calibrated HEDI simulations failure with experimental data. Additionally, simulations have relied on a structured mesh to represent quasi-isotropic panels. For this study, a continuous fiber unidirectional tape, IM7/PEKK, was analyzed through a series of verification studies of unnotched and notched laminate coupons, then validation studies on quasi-isotropic panels under HEDI are compared with experimental data. Experiments using unidirectional TPC are performed to obtain tabulated stress vs strain curves using Digital Image Correlation (DIC) for inputs into MAT213. Next, unnotched and notched coupon experiments are used as an intermediate step to calibrate the damage and failure behavior in MAT213. Lastly, investigations into differences between HEDI simulations using a structured mesh and a fiber aligned mesh are compared with experimental failure patterns, damage sizes and penetration threshold. Modeling of the damage mechanisms in laminated composites coupons is of interest to better predict composite response under dynamic loading conditions. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |