Abstract
The objective of the present study is to investigate the ballistic impact behavior of Kevlar/Polypropylene (PP) composites through hydrocode simulations performed in ANSYS AUTODYN-2D/3D. The studies are carried out based on the experimental and numerical investigation of ballistic impact response of Kevlar/PP composites reported in our recent work [Bandaru et al. Ballistic impact response of Kevlar® reinforced thermoplastic composite armors, Int J Impact Eng 2016;89:1-13]. The interface between the Kevlar and PP matrix is improved by adding polypropylene grafted with Maleic anhydride. The numerical model is validated by evaluating the ballistic impact performance of Kevlar/PP composites when impacted with STANAG-2920 fragment simulating projectile (FSP). Kevlar/PP showed improved ballistic impact performance than that of the Kevlar/Vinylester composite reported in the literature. Numerical simulations are further extended to study the influence of the mass of the projectile on the ballistic impact performance of Kevlar/PP composite armors in terms of ballistic limit, energy absorption and residual velocity. It is observed that shear plugging is the dominant failure mechanism in thermoplastic composites.
| Original language | English |
|---|---|
| Pages (from-to) | 355-362 |
| Number of pages | 8 |
| Journal | Procedia Engineering |
| Volume | 173 |
| DOIs | |
| Publication status | Published - 2017 |
| Externally published | Yes |
| Event | 11th International Symposium on Plasticity and Impact Mechanics, IMPLAST 2016 - New Delhi, India Duration: 11 Dec 2016 → 14 Dec 2016 |
Keywords
- Ballistic impact
- Ballistic limit
- Kevlar
- Polypropylene