Research on Optimisation Design Technology of Helicopter Ballistic Armour
摘要
This paper focuses on the optimisation of a metallic honeycomb structure aimed at improving ballistic impact resistance. Firstly, based on the Johnson–Cook model, the selection of ceramic materials is optimised by analysing the stress conditions at different depths during the impact of ceramic blocks. Secondly, based on the Johnson–Cook model and the Hanshin failure criterion, a numerical simulation method is used to optimise the thickness of the ceramic and polyethylene composite plates in the ballistic resistant structure. This metallic honeycomb structure is a ballistic impact resistant design with ceramic plates and UHMWPE composite laminates embedded in an alloy honeycomb structure. It ensures that the structure will not be penetrated by a 12.7 mm calibre armour-piercing round, effectively improving structural efficiency and serving as a load-bearing component of the airframe.