摘要
目的研究拦阻着舰产生的持续性－Gx载荷对舰载机飞行员心肺器官产生的机械性挤压，以判断发生损伤的风险。方法基于人体心肺解剖特征和文献中公开的组织材料特性建立具有较高几何精度、刚性与粘弹性相结合的人体心肺及胸骨有限元模型，对典型拦阻载荷作用下的心肺动力学响应进行有限元显式动力学分析。结果①心脏最大应力出现在心脏连接处，最高应力值约为1.25 MPa；②肺部最大应力值出现在肺部与胸骨的挤压处，最高应力值约为0.7 MPa；③在－Gx载荷作用下，肺部与胸骨之间会出现多处挤压接触。结论仿真研究表明，－Gx载荷会对人体心脏和肺部产生冲击性应力，导致心肺与胸骨之间的相对位移。提示在舰载机着舰阶段，－Gx载荷对飞行员心肺产生机械性挤压。
Objective To investigate the influences of mechanical crush induced by the sustained-Gxacceleration during arrested landing process on pilot＇s heart and lung in order to evaluate the risks of injury . Methods A high geometric accuracy ,rigidity-viscoelasticity finite element model of human heart ,lung and chest bones were built based on anatomical data and the material properties of different tissues obtained from published literature .The finite element dynamic explicit was conducted for analyzing the responses of the human heart and lung during typical arrested landing process . Results The simulation study demonstrates that -Gxwould generate impact stress on human heart and lungs and cause the relative displacement between heart ,lungs and chest bones .It presents the-Gxinduced mechanical crush influence on the aircraft carrier pilot during arrested landing .
作者
李鸣皋
柳松杨
韩雅慧
柯鹏
赵鑫
Li Minggao;Liu Songyang;Han Yahui;Ke Peng;Zhao Xin(Navy General Hospital of PLA,Beijing 100048,China)
出处
《中华航空航天医学杂志》
CSCD
2018年第1期28-32,79,80,F0003,F0004,共9页
Chinese Journal of Aerospace Medicine
基金
总后十二五重大课题AHJ2011Z001
关键词
心脏
肺
动力学
计算机模拟
有限元分析
舰载机
拦阻着舰
Heart
Lung
Kinetics
Computer simulation
Finite element analysis
Carrier-based aircraft
Arrested landing
