高温环境下复合材料加筋壁板振动/噪声动态结构破坏模式研究

Study On Vibration/Noise Dynamic Structural Failure Mode of Composite Stiffened Panel Under High Temperature Environment

复合材料优异的耐磨损和耐高温性能在众多材料中脱颖而出,被广泛应用于航天航空领域。本文基于随机振动试验和掠入射噪声试验方法,使用试验验证的手段对复合材料加筋壁板开展室温振动、室温噪声试验以及高温振动联合、高温噪声联合试验,试验过程中采集动态加速度响应,获取到不同试验状态下的响应变化特征,并对其破坏形式及破坏时间进行了记录。试验得到:在高温环境下,振动载荷或噪声载荷对复合材料加筋壁板造成的破坏模式,为该材料的结构设计和使用提供相关依据。

The excellent wear resistance and high temperature resistance of composite materials stand out among many materials and are widely used in the field of aerospace.Based on random vibration test and grazing-incidence noise test methods,this paper uses experimental verification methods to carry out room temperature vibration and noise tests as well as combined high temperature vibration and high temperature noise tests on composite reinforced panels.During the test,dynamic acceleration response,and the response change characteristics under different test states are obtained.The destruction form and time were recorded.The results show that the damage mode caused by vibration load or noise load to the composite stiffened panel under high temperature environment,which provides the relevant basis for the structural design and use of the material.