基于效应靶的装药水下近场爆炸威力评估方法

An Evaluation Method for Near-field Underwater Explosion Power Based on Effect Target

为了评估装药水下近场爆炸威力,将威力评估与结构毁伤联系起来,提出了效应靶方法。通过对边界可滑移圆板的试验和理论研究,建立并验证了靶板变形计算方法,获得了近场爆炸能量时序分配特性。提出了无量纲化的威力损伤因子,用以建立不同靶板的等效关系。在此基础上,初步设计了基于效应靶的装药近场威力评估试验设计和试验方法。试验结果表明,在近场爆炸范围内,随着爆炸距离增加,冲击波和气泡两个作用阶段的变形能比例为先快速减小再趋于平缓变化。与常规威力评估方法相比,效应靶评估方法更能体现装药水下近场爆炸威力的破坏作用。

An effect target evaluation method is proposed to evaluate the near-field underwater explosion power of charges,which considers the power evaluation and the structural damage. The calculation method of target deformation is established and validated through the experiment and theoretical study of slip boundary circular plate,and the distribution characteristics of energy in near-field explosion are obtained. The equivalent relation among different scale target plates is established by the dimensionless power damage factor. Based on these studies,the test equipment and method for evaluating near-field underwater explosion power are preliminarily established. The results show that,for the near-field underwater explosion,the deformation energy ratio firstly decreases rapidly and then tends to be gentle as the distance increases. In comparison to conventional evaluation method,the effect target evaluation method is able to represent the damage power of charges in near-field underwater explosion.