导弹挂架载荷标定试验与模型求解

STUDY ON CALIBRATING LOAD TEST AND MODEL FOR MISSILE PYLON

根据飞机导弹挂架结构分析与实际受力情况,在导弹挂架受载结构部件处粘贴应变传感器。通过地面加载标定以及试验数据分析处理,建立导弹挂架载荷输入与应变输出本构方程关系式,得到导弹挂架在实际飞行过程中的载荷—时间历程,对导弹挂架的结构设计与优化、寿命估算和地面模拟试验具有参考意义。

Missile pylons are the important structural components, which connect airplanes and missiles. Estimating their loading and life cycle is necessary for safety and reliability of airplane and missile. The method of load measurement is presented through the analysis based on the strain gauge installation and calibration for a missile pylon. The constitutive model of component of missile pylon is carried out by load calibration test for the structural. The relationship between the load input and strain output is experimentally determined. And, its correlation about the data acquisition and data processing of typical flying profiles is estimated by the multiple linear regression method. At the same time, the load-time history, which can offer important references for load measurement, life estimation, simulation test and shortening the cycle of development of the missile pylon, is indicated in this work.