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飞机结构的战伤模式及战伤程度预测对于制定战场抢修预案及改进战斗生存力设计具有重要意义。采用计算机模拟仿真技术定量分析了飞机机翼结构遭受射弹攻击后的损伤情况。通过损伤仿真讨论了3类情形,一是机翼结构受到简单的侵彻后的冲击效应;二是高速射弹攻击带有翼盒的机翼,而产生流体动力冲压效应;三是在射弹冲击模型中增加爆炸条件,研究射弹以任意角度冲击不同的位置产生的耦合效应。基于AN SY S/LS-DYNA仿真,给出了机翼结构损伤的结果,结论为战伤飞机战场抢修的快速评估提供了科学依据,也为飞机平时修理提供了参考。
Aircraft structure war damage patterns and war damage prediction for battlefield battlefield repair plan and improve the design of combat survivability is of great significance. Computer simulation technology was used to quantitatively analyze the damage of aircraft wing structure after being attacked by a projectile. Three kinds of situations are discussed through damage simulation. One is that the wing structure is subjected to a simple penetration impact; the other is that the high-speed projectile attacks the wing with the wing box and produces the hydrodynamic stamping effect; the third is that in the projectile In the impact model, the conditions of the explosion are increased, and the coupling effect of the projectile striking different positions at any angle is studied. Based on the AN SY S / LS-DYNA simulation, the structural damage of the wing is given. The conclusion provides a scientific basis for the rapid assessment of the battlefield repair of war-wounded aircraft, and provides a reference for the aircraft to be repaired at ordinary times.