High velocity impact and penetration problems include large deformation, erosion, high strain rate dependent nonlinear material behavior and fragmentation. Therefore, meshless methods seem to be ideally suited for the modeling of penetration events as they allow unrestricted deformation and easy tracking of material interfaces and loading histories. In the first part of this study, a brief overview about meshless methods is given. Also the most important features of meshless methods with respect to mesh based approaches are compared. In the second part, numerical model is developed using one of the most frequently used meshless method, Smoothed Particle Hydrodynamics (SPH). 3D numerical simulations are performed on a high performance computer using MPP version of the explicit finite element code LS-Dyna. For reasonable behavior of material response under dynamic loading, Johnson Cook material models for armor steel target and 7,62 armor piercing projectile are derived using SHPB (Split Hopkinson Pressure Bar) test data. SPH computational investigation is compared with available experimental data such as penetration depth and impact crater diameter. For the future work, other potential meshless methods for ballistic impact problems are identified.
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ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis
July 12–14, 2010
Istanbul, Turkey
Conference Sponsors:
- International
ISBN:
978-0-7918-4918-7
PROCEEDINGS PAPER
Simulation of Impact and Fragmentation With the Meshless Methods
Namık Kılıc¸,
Namık Kılıc¸
Otokar Otomotiv ve Savunma San. A.S¸., Sakarya, Turkey
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Atıl Erdik,
Atıl Erdik
Otokar Otomotiv ve Savunma San. A.S¸., Sakarya, Turkey
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Bu¨lent Ekici
Bu¨lent Ekici
Marmara University, I˙stanbul, Turkey
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Namık Kılıc¸
Otokar Otomotiv ve Savunma San. A.S¸., Sakarya, Turkey
Atıl Erdik
Otokar Otomotiv ve Savunma San. A.S¸., Sakarya, Turkey
Bu¨lent Ekici
Marmara University, I˙stanbul, Turkey
Paper No:
ESDA2010-25064, pp. 223-230; 8 pages
Published Online:
December 28, 2010
Citation
Kılıc¸, N, Erdik, A, & Ekici, B. "Simulation of Impact and Fragmentation With the Meshless Methods." Proceedings of the ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 4. Istanbul, Turkey. July 12–14, 2010. pp. 223-230. ASME. https://doi.org/10.1115/ESDA2010-25064
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