摘要
以典型金属加筋板为鸟撞实验研究对象,采用数字图像相关法的非接触测试方法实现鸟撞区域测试点三维位移信息的测量,与传统的接触式测试方法相比,测试精度和可靠性得到了提高。并通过分析高速摄像结果,得到数值模拟中鸟体应采用的描述流体行为的本构模型。最后通过对比不同撞击点的实验结果,确定了典型加筋板的鸟撞危险点,验证了加筋板不同的蒙皮-筋条间连接强度对结构抗鸟撞性能的影响。
The objective is to investigate a bird strike experiment in typical metal stiffened plate. Comparing with the traditional contact test methods,the 3D displacement curves of measured points in bird strike region for the stiffened metal plate is high accuracy and more reliable by applying digital image processing technology of non-contact measurement. Based on the high-speed video data,the numerical bird body should be simulated with a fluid constitutive model. Finally,the most dangerous impact point of the typical stiffened plate is determined with comparing the experimental results of different impact point,and the influence of different connection strength is confirmed by verifying the joining strength between the different bridge and skin.
出处
《机械科学与技术》
CSCD
北大核心
2015年第9期1461-1466,共6页
Mechanical Science and Technology for Aerospace Engineering
关键词
鸟撞
金属加筋板
抗鸟撞设计
动力学实验
anti-bird impact design
bird strike
computer simulation
constitutive models
design
design of experiments
dynamic experiments
errors
experiments
high speed cameras
image processing
lasers
reliability
schematic diagrams
stiffened metal plate
three dimensional
velocity measurement
