水下爆炸性冲击波实验模型的建立及其应力分布特性的研究  

DEVELOPMENT OF THE EXPERIMENTAL MODEL FOR EXPLOSIVE BLAST UNDER WATER AND ANALYSIS FOR ITS STRESS DISTRIBUTION CHARACTERISTICS

作　　者：张良潮[1] 王建民[1] 李兵仓[1] 陈蕾[1] 陈志强[1] 兰进军[1] 

机构地区：[1]第三军医大学大坪医院野战外科研究所,重庆400042

出　　处：《医用生物力学》2002年第2期65-69,共5页Journal of Medical Biomechanics

摘　　要：目的　建立水下爆炸性冲击波实验模型并分析其应力分布特性。方法　根据爆炸性冲击波的理论应力分布特性 ,建立水下爆炸性冲击波实验模型。将培养的内皮细胞放入特制的无菌薄层塑料袋内模拟细胞致伤模型 ,用 80mg电雷管致伤后观察细胞损伤情况。结果　爆炸性冲击波在水中的衰减速度较空气中缓慢 ,水的深度对冲击波压力峰值有显著影响 ,对于同一爆源 ,水越深 ,压力值越小。不同层数的滤膜覆盖与压力感应呈线性衰减 ,8层滤膜覆盖致伤时可见内皮细胞有明显的皱缩脱落现象。结论　冲击波在不同介质中的传播速度与衰减幅度与介质的密度密切相关 ;水下冲击波的压力值不仅与爆源的距离有关 ,而且与水深有关。Objective To develop the experimental model for explosive blast under water and analysis its distribution characteristics. Methods Depending on the theoretic principle of explosive blast,the experimental model for explosive blast under water was established. The cultured endothelial cells were placed into special asepsis plastic bag to simulate the cell injury through electric exploder of 80mg. Results The reducing velocity of explosive blast in water is slower than in air.The height of the exploder in water had obvious influence on the pressure peak of explosive blast .From the same explosive source, the deeper the water,the smaller the pressure.Different covers with filter membrane have relation to the pressure by line reducing. There is obviously crimple and exfoliate of endothelial cells injury when covered by 8 membranes. Conclusion Transmission speed of explosive blast has relation to different medium, the pressure of explosive blast under water is not only related to the distance from explosive source, but also to the height of the water.

关 键 词：水下冲击波 爆炸伤 实验模型 应力分布 

分 类 号：R642[医药卫生—外科学] R318.01[医药卫生—临床医学]