Blast response of composite materials is a crucial aspect for applications in engineering structures potentially subjected to extreme loadings. In this work, damage caused to fibre-polymer laminates by surface contact explosive charges is studied experimentally and numerically. In the blast tests, explosive charges placed in direct contact with glass or carbon fibre laminates cause partial or complete perforation due to the extremely high localised pressure generated by the blast. Damage is localised to the immediate vicinity of the explosive charge location, and includes fibre-matrix interfacial cracks, matrix cracks, delaminations, and broken and pulverised fibres. Finite element (FE) modelling can predict the types and amount of blast-induced damage. FE analysis reveals that the blast energy is absorbed by the laminates via fibre fracture and delamination cracking. Other types of damage, such as matrix cracking, absorb little energy. The FE models were validated against the results from experimental blast tests. Parametric analysis using the FE model is performed to determine the effects of several variables on the amount and types of damage, including the mass of the surface explosive charge and the thickness of the composite material.

复合材料的爆炸响应是在可能承受极端载荷的工程结构中应用的关键方面。在这项工作中，通过实验和数值研究了表面接触炸药对纤维聚合物层压板的破坏。在爆炸测试中，由于爆炸产生的极高的局部压力，与玻璃或碳纤维层压板直接接触的炸药会导致部分或完全穿孔。损坏仅限于爆炸装药位置附近，包括纤维-基质界面裂纹，基质裂纹，分层以及破碎和粉碎的纤维。有限元（FE）建模可以预测爆炸引起的损坏的类型和数量。有限元分析表明，爆炸能量通过纤维断裂和分层开裂而被层压材料吸收。其他类型的损坏（例如基体破裂）吸收的能量很少。FE模型已根据爆炸试验的结果进行了验证。使用有限元模型进行参数分析，以确定几个变量对破坏的程度和类型的影响，包括表面炸药的质量和复合材料的厚度。