基于瞬时空腔效应的明胶靶标与肌肉目标等效性研究

Study of the Equivalence between Gelatin and Muscle Target Based on Temporary Cavity Effect

明胶靶标作为肌肉目标模拟物被广泛应用于瞬时空腔效应相关理论和实验研究,建立明胶靶标与肌肉目标瞬时空腔效应的等效关系,对明胶靶标的推广应用具有重要意义。分析了瞬时空腔形成的物理过程,找出了影响瞬时空腔尺寸的主要物理参数;利用相似理论推导出瞬时空腔效应的相似准则方程,并基于不同靶标实验数据求解出方程系数,从而建立了明胶靶标与肌肉目标的空腔效应等效模型;通过球形破片侵彻猪后腿的实验验证了该等效模型的准确性,模型预测的最大瞬时空腔直径与实验相对误差小于4.0%.

Gelatin target is used as a muscle target minic in theory or experiment study for temporary cav- ity effect. The equivalent relationship between gelatin and muscle targets is established. The physical process of temporary cavity formation is analyzed to get the physical parameters which affect the cavity size. A mathematics equivalent model for gelatin and muscle targets is established by using an similarity theory to deduce the similarity law about temporary cavity and a lot of different targets to calculate the co- efficient of the similarity law. The experimental data prove the correctness of the model. The study shows that the diameter of temporary cavity in gelatin target is similar to that in muscle target with the relative error of less than 4.0%.