非包容转子碎片撞击飞机增压舱的数值模拟

摘要

为了更加合理地评估非包容转子碎片对飞机机身的危害 ,研究了增压舱内部气体压力是否会对碎片撞击过程产生影响.针对非包容转子碎片撞击飞机增压舱蒙皮的穿孔问题 ,应用ANSYS旗下的非线性动力学分析软件AUTODYN对非包容碎片撞击飞机增压舱进行了数值模拟研究.结果表明 :在一定的气体压力下 ,气体压力对飞机增压舱蒙皮穿孔大小的影响可以忽略不计.%For the purpose of evaluating the harm of uncontained rotor fragments more reasonably ,in this paper ,it is necessary to study whether the gas pressure of internal pressurized cabin effects the fragments impact process .To the problem of the uncontained rotor fragment impacting the pressurized-cabin skin ,the Lagrange methods in AUTODYN-2D were used to investigate the perfora-tion of pressurized cabin .The simulation result shows that the effect of gas pressure on the perforation can be neglected .