接触爆炸荷载作用下带孔防护结构内冲击波的传播规律

采用有限元分析软件ATUODYN，对接触爆炸荷载作用下带孔防护结构内冲击波的传播进行了数值模拟，得到了防护结构孔口和内部中心处冲击波超压－时间曲线；分析了炸药量和爆心距孔口距离对防护结构内部超压、正压冲量的影响；以数值计算结果为基础，结合量纲分析，拟合得到了结构内部中心处爆炸冲击波特征参数的预估公式。

Propagation of shock waves in protective structures with holes under contact explosive loads

The finite element code, AUTODYN, was used to numerically simulate the propagation of the shock wave in the protective structure with holes under contact explosive loads.The overpressuretime curves were obtained for the shock waves around the orifice and in the center of the protective structure, respectively.The effects of the explosive charge weight and the blast center distance on the overpressure and impulse in the protective structures were analyzed.And based on the numerical calculation, the prediction formulas for the characteristic parameters were achieved by applying the dimensional analysis method.