爆炸冲击载荷下猪肺部的损伤特性  

Injury properties of porcine lung under blast load

作　　者：张佃元 于晨 郝文勇 李元 侯兵[1,3] 索涛[1,3] ZHANG Dianyuan;YU Chen;HAO Wenyong;LI Yuan;HOU Bing;SUO Tao(School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China;BYD Auto Industry Co.,Ltd.,Xi'an 710065,Shaanxi,China;Institute of Extreme Mechanics,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China)

机构地区：[1]西北工业大学航空学院,陕西西安710072 [2]比亚迪汽车有限公司,陕西西安710065 [3]西北工业大学极端力学研究院,陕西西安710072

出　　处：《爆炸与冲击》2024年第12期124-134,共11页Explosion and Shock Waves

基　　金：国家自然科学基金(12141203,U2341236)。

摘　　要：为了深入研究爆炸冲击波作用下生物体肺部的力学响应和损伤特性,首先建立了猪胸部有限元模型,借助新研制的PVDF(polyvinylidene fluoride)柔性冲击波压力传感器测试了激波管试验中动物的体表压力,验证了有限元模型的准确性。然后,使用已验证的模型开展了不同比例距离下猪肺部损伤特性研究,分析了在不同强度冲击波作用下肺部的损伤程度和损伤区域,并建立了胸肺部表皮压力峰值与肺损伤的关系。最后,通过开展爆炸试验,获得了不同比例距离下猪的肺部损伤情况和胸部表皮压力曲线,验证了所建立的胸肺部表皮压力峰值与肺损伤关系的正确性。In order to study the mechanical response and injury characteristics of living lungs under the action of blast shock waves,this study first established a finite element model of the chest of a small pig and used a newly developed PVDF(polyvinylidene fluoride)flexible pressure sensor to test the surface pressure of animals in shock tube experiments,verifying the accuracy of the finite element model.Secondly,the validated model was used to study the characteristics of lung injury of pigs at different blast distances,analyzing the lung injury location and severity under different intensities of shock waves.Moreover,the relation between the peak pressure on the surface of the chest and the grade of lung injury was established.Finally,blast tests were performed to obtain the lung injury of pigs as well as the chest surface pressure histories at different blast distances,which can be used to verify the correctness of the established relation.

关 键 词：动物有限元模型 爆炸冲击波 肺损伤 压力峰值 

分 类 号：O383[理学—流体力学]