ABAQUS Impact Modelling

Shot peening is one of the most important processes for forming metallic aircraft wing skin panels. It involves bombarding the surface of the wing skin panels with a stream of small shot peens. The size of these peens is normally at the magnitude of millimetres in terms of diameter, while the size of the wing skin panels could be up to 30 meters long. Work has been done to model it as a manufacturing process and to understand its impact mechanics. However, a specific interest is the understanding of impact mechanics when the target material is under a pre-stressed condition. To achieve this, behaviour of pre-stressed metallic material (particularly aircraft aluminium alloys) under single and multiple impacts needs to be studied. *Model a single and multiple impacts on a metallic target under pre-stressed condition.