Lagrangian approach embed with discrete element method for extreme deformation study in frangible bullet designs fragmentation and penetration on viscoelastic ballistic gel.

Autor:	Widyastuti; Internet of Things and Defense Technology Research Center, Institut Teknologi Sepuluh Nopember, Surabaya City, Indonesia., Wibowo AP; Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya City, Indonesia., Pramujati B; Department of Mechanical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya City, Indonesia., Lesmana D; Indonesian Army Industries Ltd., Malang City, Indonesia., Pratama AA; Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya City, Indonesia., Wijaya SP; Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya City, Indonesia.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2023 Mar 25; Vol. 9 (4), pp. e14900. Date of Electronic Publication: 2023 Mar 25 (Print Publication: 2023).
DOI:	10.1016/j.heliyon.2023.e14900
Abstrakt:	Development of a model for analyzing a bullet's impact is important in the military field to design a bullet with desired properties. This study uses a finite element model with a Lagrangian framework and Lagrange-discrete element method (DEM) model by ANSYS Explicit Dynamic to investigate the effect of frangible bullet designs on bullet deformation and penetration in ballistic gel setting. A modeling approach with ballistic gel can analyzed the extreme deformation of bullets much faster compared to the more resource intensive real life ballistic gel test. The study starts with developing a 3D model, then importing it to an ANSYS workbench to solve the problems. Overall, the results of Lagrange-DEM shows deeper penetration and better accuracy to represent the real life ballistic gel test than other simulation method. The fluted bullet design has a shorter penetration depth but a bigger temporary cavity diameter than the flat-nosed one due to its notch and asymmetrical design, which becomes the part that is easily deformed and leads to directional deformation. (© 2023 The Authors.)
Databáze:	MEDLINE
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