PSI - Issue 42

Yağmur Göçmen et al. / Procedia Structural Integrity 42 (2022) 1736– 1743 Go¨c¸men et al. / Structural Integrity Procedia 00 (2019) 000–000

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hemispherical projectile. SPH method results in higher residual velocity values compared to experimental data for ogival projectile. Moreover, results show that decreasing the thickness of the target plate resulted in a linear increase of residual velocity except in JC model. Regarding the oblique impact simulations, increasing the obliquity of the target plate resulted in increased hole size and an increase in the separation of petals from the target. Blunt projectile has significant velocity changes in all impact angle changes, while other two projectiles do not change much in velocity at low angles. While the FE method is consistent in most cases, the SPH method overpredicts the residual velocity results at initial velocities less than 200 m / s for except blunt shaped projectiles. In addition, some SPH simulations have di ffi culty showing the failure mechanism of the target. In future studies, it is planned to develop a coupled SPH-FE model to extend the modeling approaches. 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