为了描述杀伤元直径与受损目标的最大瞬时空腔直径之间的关系,采用量纲分析方法建立了钢球侵彻明胶的相似模型,分析了钢球侵彻明胶造成的瞬时空腔的最大直径的相似律,得到了一套基于相似理论的缩比实验方法及瞬时空腔最大直径的预测公式.采用不同直径的钢球对明胶靶标进行了侵彻创伤实验,结果表明,在特定情况下,该文提出的缩比实验方法及瞬时空腔最大直径的预测公式具有高的预测精度.%To investigate the relationship between the diameters of projectile and the maximum temporary cavity diameters of target, the similarity model of steel ball penetrating into gelatin was built based on the dimensional analysis. The similarity law of the maximum diameters of the temporary cavity produced by the steel ball penetrating into the gelatin was analyzed,and a scale down experiment method and prediction formula of the maximum temporary cavity diameter based on the similar theory were obtained. The wound experiments were conducted,in which the steel balls with different diameters were used to penetrate into gelatin. The results indicate that the scale down experiment and prediction formula of the maximum temporary cavity diameter have high prediction accuracy under special conditions.
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