Wibowo Adhy Prihatmiko, Pramujati Bambang, Lesmana Denny, Pratama Afrizal Aditya, Wijaya Sugiarto Putra
Internet of Things and Defense Technology Research Center, Institut Teknologi Sepuluh Nopember, Surabaya City, Indonesia.
Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya City, Indonesia.
Heliyon. 2023 Mar 25;9(4):e14900. doi: 10.1016/j.heliyon.2023.e14900. eCollection 2023 Apr.
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.
开发一种用于分析子弹撞击的模型在军事领域对于设计具有所需性能的子弹非常重要。本研究使用具有拉格朗日框架的有限元模型和ANSYS Explicit Dynamic的拉格朗日离散元法（DEM）模型，来研究易碎子弹设计对子弹在弹道凝胶环境下变形和穿透的影响。与资源消耗更大的实际弹道凝胶测试相比，采用弹道凝胶的建模方法能够更快地分析子弹的极端变形。该研究首先开发一个三维模型，然后将其导入ANSYS工作bench中以解决问题。总体而言，拉格朗日离散元法的结果显示，与其他模拟方法相比，其在表示实际弹道凝胶测试时具有更深的穿透深度和更高的精度。由于其凹槽和不对称设计，带槽子弹设计的穿透深度比平头子弹短，但临时空腔直径更大，这使其成为容易变形并导致定向变形的部分。
