球形破片侵彻明胶的瞬时空腔模型

doi:10.3969/j.issn.1000-1093.2013.10.020

兵工学报 ›› 2013, Vol. 34 ›› Issue (10): 1324-1328.doi: 10.3969/j.issn.1000-1093.2013.10.020

球形破片侵彻明胶的瞬时空腔模型

莫根林, 吴志林, 刘坤

南京理工大学机械工程学院, 江苏南京210094

收稿日期:2012-11-14 修回日期:2012-11-14 上线日期:2013-12-16
作者简介:莫根林(1987—),男,博士研究生。
基金资助:
国家安全重大基础研究项目(613104)

Temporary Cavity Model of Spherical Fragments Penetrating Ballistic Gelatin

MO Gen-lin, WU Zhi-lin, LIU Kun

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu,China

Received:2012-11-14 Revised:2012-11-14 Online:2013-12-16

摘要/Abstract

摘要： 为研究杀伤元对人体的致伤机理,采用明胶作为人体组织替代物,研究了球形破片侵彻明胶时瞬时空腔的运动规律。采用高速摄影获得了3 mm、4 mm 和4. 8 mm 钢球以650 ~1 000 m/ s 速度侵彻明胶的空腔实验数据。根据弹性变形假设和位移场假设,推导出空腔的运动为正弦运动。利用球形破片在明胶中的运动模型和空腔实验数据,建立了空腔振幅与能量、角频率与能量的经验公式。采用5. 2 mm 钨球以800 m/ s 速度侵彻明胶的实验结果对模型进行验证,结果表明该模型能够较好地预测球形破片侵彻明胶的瞬时空腔的振幅和振动周期。

关键词: 兵器科学与技术, 瞬时空腔, 正弦运动, 弹道明胶, 球形破片

Abstract: Ballistic gelatin is used as a stimulant for human tissue in the experimental study of temporary cavity which is an important factor of ballistic injury. To study the motion of temporary cavities, the steel spheres with diameters of 3 mm, 4 mm and 4. 8 mm are fired into the gelatin blocks at 650 ~1 000 m/ s in the experiments. The movement of temporary cavity is recorded by a high speed camera. The sine motion of the cavity wall is deducted based on the displacement field assumption and the elastic deformation assumption of gelatin. The empirical relations between amplitude and energy, and frequency and energy are established using the experimental data while a penetration model of spherical fragments in gelatin is built. The model is used to predict the temporary cavity for a 5. 2 mm tungsten sphere penetrating into gelatin at 800 m/ s. The predicted results are in good agreement with the experimental data.

Key words: ordnance science and technology, temporary cavity, sine motion, ballistic gelatin, spherical fragment

中图分类号:

O345

莫根林, 吴志林, 刘坤. 球形破片侵彻明胶的瞬时空腔模型[J]. 兵工学报, 2013, 34(10): 1324-1328.

MO Gen-lin, WU Zhi-lin, LIU Kun. Temporary Cavity Model of Spherical Fragments Penetrating Ballistic Gelatin[J]. Acta Armamentarii, 2013, 34(10): 1324-1328.

参考文献

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球形破片侵彻明胶的瞬时空腔模型

Temporary Cavity Model of Spherical Fragments Penetrating Ballistic Gelatin

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