Impact Strength Optimization on the Shield of a Certain Flight Data Recorder

The impact loads on the shield of a certain flight data recorder are simulated by dynamic analysis module of ANSYS software,the responses to the stress and the distortion of the shield under the stated impact loads are analyzed.For the aim of the lightest shield,under the restriction of the maximum stress,an optimization model is built.A design for optimizing the wall thick and the arc radius of the shield by BP network is made.