机织复合材料机厘平板结构抗冲击性能影响因素分析

Analysis of influence factors of impact resistance of woven composite casing flat structure

为评估复合材料机匣结构的包容能力,将叶片飞脱碎片用钛合金方块弹体来模拟,然后以一定的速度和撞击角度撞击复合材料机匣平板结构,等效考核机匣受叶片飞脱碎片撞击时的抗包容能力。通过获取弹体在不同工况下的抗冲击临界速度,评估复合材料机匣平板结构的抗冲击性能,并分析典型的冲击响应物理参数随不同因素的变化规律。提出的试验方法可以为真实包容机匣适航验证试验的成功提供有力支撑.得到的结论可为复合材料结构的抗冲击包容优化设计提供参考。

In order to assess the containment capacity of the composite receiver structure,the blade out debris was simulated with a Titanium block projectile.Then it impacted the composite casing flat structure at a certain speed and impact angle.The resistance of the casing to the impact of the blade out debris was equivalently assessed.The impact resistance of the composite casing flat structure was evaluated by obtaining the critical speed under different operating conditions.The typical physical parameters of impact response vary with different factors were analyzed.The proposed test method can provide strong support for the success of the airworthiness verification containment test of the real casing.