条形装药接触爆炸对金属靶板作用的断裂效应

研究条状爆炸载荷局部作用于金属矩形板的断裂效应 .基于矩形板在局部爆炸脉冲载荷作用下的塑性动力响应 ,提出了断裂临界判据 ,得到了靶板达到临界断裂点时所需的冲量准则 ,并对照条形装药不同位置处的冲量计算式 ,计算出靶板达到不同断裂毁伤等级时所需装药量 ,实验验证结果与理论计算结果吻合较好 .用该结果可对金属靶板的爆炸断裂效应研究或抗爆分析及工程实际运用结果进行有效预测

A Study on the Rupturing Effects upon a Metal Plate Under the Contact Explosion of Linear Explosive

The rupturing effect on a metal plate under the contact explosion of a linear explosive load is studied. On the basis of the plastic dynamical response of a rectangle, the critical rupture criterion is put forward, and the impulse criterion and the impulse formula of different parts of the linear explosive load are obtained. The explosive weight needed for different degrees of damage is calculated theoretically and the theoretical results are found to coincide well with the experimental data. The results can be used as a guidance or experimental evidence in the study on blasting rupture and in engineering use.