Rahman Reza AbdulPrabowo, Aditya RioAditya RioPrabowoEhlers, SörenSörenEhlersBraun, MoritzMoritzBraunYaningsih, IndriIndriYaningsihMuhayat, NurulNurulMuhayatTjahjana, Dominicus Danardono Dwi PrijaDominicus Danardono Dwi PrijaTjahjanaAdiputra, RistiyantoRistiyantoAdiputra2024-09-172024-09-172024-09-09Journal of the Brazilian Society of Mechanical Sciences and Engineering 46 (10): 598 (2024-09-09)https://hdl.handle.net/11420/49104This study presents a numerical investigation of bullet impact on sandwich panel structures. This research aims to demonstrate the ideal performance of sandwich panel structures in resisting ballistic loads based on the type of core geometry and materials used. Numerical simulations were conducted using the Johnson–Cook material model and applied in ABAQUS/Explicit software. Parameters such as shot target location and bullet angle of attack were considered in this study to review the structure’s resistance to ballistic loads. The results showed that the sandwich panel structure with decagon core geometry and Armox 500 T material was optimal in resisting the impact of blunt bullets at 500–700 m/s. The contribution of this research is to provide understanding in the field of ballistics by showing the interaction between the sandwich structure and the bullet through the velocity drop that occurs on the bullet and the energy the structure can absorb. Overall, this research provides insight into improving the design and performance of protective structures.en1678-5878202410SpringerAbsorbed energyBallistic impactResidual velocitySandwich panelStructure–bullet interactionTechnology::690: Building, ConstructionTechnology::620: Engineering::620.1: Engineering Mechanics and Materials Science::620.11: Engineering MaterialsComputer Science, Information and General Works::005: Computer Programming, Programs, Data and SecurityJournal Article10.1007/s40430-024-05176-3Journal Article