某型飞机后减速板建模与特性分析

Model and dynamic characteristics of the aircraft back deceleration plates

应用有限元方法建立某型飞机后减速板的有限元模型,模拟后减速板的载荷和约束情况,对后减速板进行静态特性分析和动态特性分析,得到了后减速板前三十阶模态。经分析发现,后减速板在载荷作用下梁和内蒙皮应力大,振动强,容易发生断裂。

The finite element model for the back deceleration plate of an aircraft is established with FEMs.Characteristic analysis on the back deceleration plate is carried out through simulation under the different loads and constraint conditions.Both the static and dynamic analysis for the back deceleration plate are taken to get the thirty-order mode.It is also found that the bridge and inner skin of the plate will encounter more stress and stronger oscillation under the loads and be easily cracked.