摘要
开展2.5维T800碳纤维/BMP350聚酰亚胺树脂编织复合材料平板结构固有振动特性的仿真分析与试验研究。首先,分别采用多尺度分析方法和细观尺度有限元分析方法预测复合材料悬臂平板的固有振动特性。其次,开展了复合材料悬臂平板的模态试验,获取其固有振动特性的实测数据。与试验结果对比,仿真预测固有频率最大误差在10%以内,验证了上述两种固有振动分析方法的有效性,可为后续2.5维树脂基编织复合材料叶片的动力学性能分析与设计研究提供参考。
Modal vibration characteristics of 2.5D T800 carbon fiber/BMP350 polyimide resin braided composite plates were numerically and experimentally investigated.Firstly,the multi-scale method and meso-scale finite element method were employed to numerically predict the modal vibration characteristics of the cantilevered composite plates respectively.Secondly,modal behaviors of the cantilevered composite plates were experimentally derived by modal testing.Compared with the experimental results,the maximum error of natural frequency predicted by simulation was 10%,which verified the validity of the above two natural vibration analysis methods.This work could pave the way to the subsequent research concerning dynamic analysis and design of 2.5D resin-based braided composite blades.
作者
刘杰明
周标
温卫东
张宏建
LIU Jieming;ZHOU Biao;WEN Weidong;ZHANG Hongjian(Aero-engine Thermal Environment and Structure Key Laboratory of Ministry of Industry and Information Technology,College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2022年第7期1469-1477,共9页
Journal of Aerospace Power
基金
航空动力基金(6141B09050340)。
