航空铝合金板抗鸟撞击性能的数值模拟研究  

Numerical Study on the Ballistic Resistance Property of Aerospace Aluminum Alloy Targets Against Bird Strike

作　　者：贾宝惠[1] 李剑峰[1] 张峰[1] 邓云飞[1] 

机构地区：[1]中国民航大学航空工程学院,天津300300

出　　处：《科学技术与工程》2015年第31期120-125,共6页Science Technology and Engineering

基　　金：中央高校基本科研业务费项目(ZXH2012DE003;3122013D009;3122014P002;Y15-04));国家自然科学基金委员会与中国民用航空局联合资助项目(U1233107)

摘　　要：利用ANSYS AUTODYN软件建立不同弹体以不同速度撞击不同靶体的仿真模型,模拟鸟撞击航空器整个过程,并利用实验验证模型的有效性,分析各种撞击条件下的弹体撞击靶体时靶体的损伤情况,得到靶体材料的性能、鸟弹的撞击速度和质量对靶体损伤特性的影响。仿真结果表明:靶体材料特性对靶体损伤会产生影响,靶体材料的屈服强度和抗拉强度越大,靶体在撞击过程中的变形就越小,鼓包的高度也越小。而鸟弹的速度和质量也会显著影响靶体受损情况,随着鸟弹速度和质量的增加,靶体鼓包的深度也会不断增加直至靶体产生撕裂破坏。Projectiles with different size and targets with different thickness have been established with the help of ANSYS-AUTODYN,then the process of bird striking aircraft have been simulated and the validation of simulation models has been proved by experiment. Based on the simulation results,the damage of targets at each circumstances have been analyzed and then the influence of targets＇ material parameters、bird-projectiles＇ speed and quality on the damage property of targets have been obtained. The simulation results indicated that target＇s material parameters would affect it＇s damage property,if the yield stress and tensile stress become stronger and stronger,the deformation of target and height of bulge would corresponding become insignificantly,Furthermore,the speed and quality of bird-projectiles can also influence the damage of targets effectively,with the increase of bird-projectiles＇ speed and quality,the height of targets＇ bulge would become higher and higher,until the target is tore by projectiles.

关 键 词：鸟击 损伤特性 抗撞击能力 数值模拟 

分 类 号：O347.3[理学—固体力学] O385[理学—力学]