圆柱壳结构水下爆炸冲击波毁伤的吸收冲量准则  

Damage Criterion of Cylindrical Shell Structure under Underwater Explosion Shock Wave:Absorbed Impulse Criterion

作　　者：毛致远 段超伟 刘刚伟 宋浦[1] 郑监 胡宏伟[1] 冯海云[1] MAO Zhi-yuan;DUAN Chao-wei;LIU Gang-wei;SONG Pu;ZHENG Jian;HU Hong-wei;FENG Hai-yun(Xi'an Modern Chemistry Research Institute,Xi'an 710065,China)

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2023年第3期245-251,I0009,共8页Chinese Journal of Explosives & Propellants

基　　金：国防科技基础加强计划技术领域基金。

摘　　要：为了准确评估水下爆炸冲击波对圆柱壳结构造成的破坏程度,考虑了冲击波与目标耦合过程中的冲量传递效率因素,给出了球面冲击波作用下圆柱壳吸收冲量的积分计算方法,并提出用其作为圆柱壳结构的毁伤准则威力参量。为了避免工程计算困难的问题,进一步给出了无需积分计算的近似简化算法。借助相关文献数据,对比分析了准则的准确度与适用性。结果表明,相对于冲击波峰压准则、比冲量准则以及能流密度准则,吸收冲量准则可以更准确地对比圆柱壳目标在不同工况下的毁伤效果,与圆柱壳结构毁伤程度具有更强的相关性,均方误差比其他准则降低76%以上;吸收冲量准则的简化计算方法可以准确逼近积分方法的结果,以文中工况为例,相对误差均在0.9%以内。所提出的毁伤准则具有良好的准确度和适用性,为准确评估水下爆炸冲击波对圆柱壳结构的毁伤效果提供了新的支撑。To accurately evaluate the damage degree of the cylindrical shell structure caused by underwater explosion shock wave,the factor of impulse transmission efficiency during the coupling process between the shock wave and the target is considered.The total impulse absorbed by the cylindrical shell under the action of a spherical shock wave is suggested as the power parameter in the damage criterion of the cylindrical shell structure,and an integral calculation method for it is provided.A simplified algorithm without integral is further developed to avoid the complexity of engineering calculation.The accuracy and applicability of the criterion are examined by literature data.The results show that,when compared to the peak pressure criterion,the specific impulse criterion and the energy flux criterion,the absorbed impulse criterion can more accurately compare the damage effects of cylindrical shell targets under different working conditions,it has a stronger correlation with the damage degree,and its corresponding mean square error is reduced by more than 76%.The simplified calculation method for the new criterion approximates the results of the integral calculation,and the relative errors are all within 0.9%for the working conditions.The proposed damage criterion with good accuracy and applicability provides new support for the accurate assessment of the damage effect of the underwater explosion on cylindrical shell structures.

关 键 词：爆炸力学 水下爆炸 冲击波 毁伤准则 圆柱壳结构 吸收冲量准则 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O389[理学—流体力学]