基于量纲分析的爆炸冲击波效应靶模型分析与实验研究

发布时间：2018-01-26 00:15

本文关键词： 爆炸力学效应靶塑性大变形量纲分析冲击波压力评定　出处：《振动与冲击》2016年06期 　论文类型：期刊论文

【摘要】：针对传统的冲击波压力电测法易受爆炸场寄生效应干扰问题,提出基于效应靶塑性变形的爆炸冲击波压力评定方法。由于效应靶理论模型复杂、参数较多,利用量纲分析方法简化模型获得爆炸冲击波压力作用的效应靶最大挠度与炸药TNT当量、炸高及炸距之关系,并建立冲击波压力作用的效应靶最大挠度计算模型;设计100 kg、60 kg、20 kg三种标准TNT爆炸的立靶、平靶实验,用回归分析法获得二者经验模型系数。结果表明,立靶与平靶两种结构效应靶最大挠度实验结果与经验模型计算结果误差分别优于3.59%及3.33%。该研究可指导战斗部冲击波压力评估,进而减少爆炸实验量。
[Abstract]:Aiming at the problem that the traditional shock wave pressure electric measurement method is susceptible to the parasitic effect of explosion field, a method for evaluating the shock wave pressure based on plastic deformation of the effect target is proposed. Because of the complexity of the theoretical model of the effect target, there are many parameters. The relationship between the maximum deflection of the target and the TNT equivalent, height and distance of explosive is obtained by using the simplified model of dimensionality analysis. A model for calculating the maximum deflection of the target subjected to shock wave pressure is established. The vertical target and flat target experiment of 100kg / 60kg / 20kg TNT explosion were designed, and the coefficients of the two models were obtained by regression analysis. The results show that the experimental results are as follows: 1. The experimental results of maximum deflection of vertical target and flat target are better than 3.59% and 3.33, respectively. This study can be used to evaluate the shock wave pressure of warhead. And then reduce the amount of explosion experiment.
【作者单位】：南京理工大学机械工程学院精仪系;
【基金】：国家自然科学基金(11372143) 国防计量(J092013B003)
【分类号】：O383
【正文快照】： 冲击波压力作为云爆弹等高能毁伤武器主要毁伤元[1]对人员、军用车辆及建筑物等毁伤取决于超压与冲量大小。工程中主要通过电测所得爆炸冲击波压力曲线获取冲击波超压及冲量,而火药在爆炸、燃烧过程中伴随较强高温、机械冲击、电磁场、强闪光等寄生效应,使通过测试曲线读取的

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