High velocity impact response of high strength aluminum using LS DYNA

Date

2019-05-14

Author

Başaran, Güralp
Özbayrmoğlu, Erkal
Bütün, Onur
Öney, Eren
Gürses, Ercan

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Experimental and numerical studies were conducted to determine the impact response for high strength aluminum armor. A series of ballistic impact tests were carried out for the impact of a 20mm Fragment Simulating Projectile (FSP) with 25.4mm high strength aluminum armor plate at 960m/s impact velocity. This study deals with the measurement of ballistic limits of the deformable FSP against high strength aluminum armor material. The numerical models were developed using the explicit finite element code LS-DYNA®. All parts in the model are modeled with Modified Johnson-cook material model calibrated with performed tests in the company. Material properties are not shared due to confidential issues. A high-speed camera was used for calculation of projectile residual velocities and projectile output images. The numerical model was validated with live test results and a good agreement was achieved between experiments and numerical results. Parameter sensitivity analyses were performed to examine the effect of material model's parameters on the response.

URI

https://hdl.handle.net/11511/77384

Conference Name

European LS DYNA Conference, (14 - 16 Mayıs 2019)

Collections

Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

G. Başaran, E. Özbayrmoğlu, O. Bütün, E. Öney, and E. Gürses, “High velocity impact response of high strength aluminum using LS DYNA,” presented at the European LS DYNA Conference, (14 - 16 Mayıs 2019), Koblenz, Germany, 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/77384.