平板条叶片撞击靶板的数值仿真研究  

Numerical Simulations of Plate Blade Impacting Target

作　　者：何庆[1] 宣海军[1] 廖连芳[2] 洪伟荣[1] 

机构地区：[1]浙江大学化工机械研究所,杭州310027 [2]沈阳发动机设计研究所,沈阳110015

出　　处：《航空发动机》2009年第3期27-29,46,共4页Aeroengine

基　　金：航空推进技术验证计划资助(APTD-1104-03)

摘　　要：建立有限元模型,对平板条叶片以不同角度和初始速度撞击矩形靶板的过程进行了数值模拟。分析了撞击过程中叶片与靶板的变形以及能量变化情况,以及撞击角度的影响,得到了撞击过程中平板条和靶板的变形及能量变化规律。模拟结果表明,撞击角度对靶板被击穿时的临界速度有着显著影响,角度越小,临界速度越大;靶板刚好被击穿时,靶板吸收的形变能出现局部峰值。Numerical simulations of the course of the plate blade impacting target with the different angles and the initial velocity were performed based on the finite element model. The deformation and the energy change law of the blade and the target and the influence of the impacting angle during the impacting were analyzed. The deformation and energy change law of the plate and the target were obtained. The simulation results show that the impacting angle has effect on the critical speed of target broke down dramatically. The smaller angle is, the greater critical speed is. The deformation of target absorbed is the local peak while the target is broke down.

关 键 词：包容能力 航空发动机 叶片 撞击 数值模拟 

分 类 号：P185.81[天文地球—天文学] TJ04[兵器科学与技术—兵器发射理论与技术]