AN IMAGE BASED APPROACH TO MODELLING PLASTIC BONDED EXPLOSIVES (PBX) ON THE MICRO SCALE

摘要

Plastic bonded explosives (PBX) usually consist of stiff energetic filler crystals distributed inside a relatively soft binder material. Understanding the failure process occurring in such materials is of importance with regards to processing methods and storage. The shape, size and volume fraction of the filler and the material properties of each phase as well as those of the interface, all influence the mechanical properties of the composite. Micromechanical finite element models are being developed to predict composite properties from given constituent properties, with debonding of crystals the primary failure mode investigated.