Survey of numerical approaches to analyse the behavior of a composite skin panel during a water impact

摘要: Abstract Water impacts may have tragic consequences for the passengers of helicopters. Most passive safety devices developed helicopter crashworthiness is designed ground impact. The loading that characterizes impact with hard and soft surfaces different therefore energy absorption are not effective during a water Various researches focus on use composite materials aircraft fuselage. In this paper, in particular, it investigated behavior panel approaches to study event by means finite element codes. order collect reliable data numerical model validation, drop tests were carried out. A sample panel, made Carbon Fiber Reinforced Plastic material similar those used modern skin panels, was manufactured. specific test device created tests. Impact decelerations deformation measured. Numerical models created. Meshless used, addition Lagrangian Eulerian Finite elements, region. Eventually, close experimental–numerical correlation obtained each terms dynamics, deformation. main features differences between four discussed. Guidelines further investigations also drawn.