摘要
复合材料桁架结构以其轻质和优异的力学性能应用于大型航天航空飞行器结构,其承载能力和振动特性是决定其应用效果的关键因素。本文考察了大型碳纤维/环氧复合材料方形截面桁架结构段的自由振动特性。采用锤击法实验测试得到了复合材料桁架结构段自由振动的模态和频率,并与有限元数值模拟结果进行对比分析,论证了锤击法测试振动特性在复合材料桁架结构上应用的可行性和准确性。
Continuous fiber reinforced polymer matrix composite trusses are widely used in aerospace and aircraft structures due to their excellent mechanical properties and relatively light weight.The vibration characteristics of the structures are the key factors for the application of composite truss.The natural vibration characteristics of composite truss were studied by using the hammering method.Comparative analysis of the truss structure was carried out by using the finite element simulation.Results show that the structural vibration modes and vibration frequency are consistent with the experimental results,which verified the feasibility and accuracy of the hammer excitation on the vibration characteristics of composite truss.
作者
黄春芳
王鹏
何明昌
肖加余
鞠苏
江大志
HUANG Chunfang;WANG Peng;HE Mingchang;XIAO Jiayu;JU Su;JIANG Dazhi(College of Aeronautics and Astronautics,National University of Defense Technology,Changsha 410073 ,China;State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact,PLA University of Science and Technology,Nanjing 210007 ,China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2018年第1期37-41,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(11202231
U1537101)
关键词
碳纤维复合材料
桁架
振动模态
自由频率
锤击法
continuous fiber reinforced polymer matrix composites
truss
vibration modes
natural frequency
hammering method
作者简介
黄春芳(1988—),男,湖南邵阳人,博士研究生,E-mail:hcf8819sk@126.com;江大志(通信作者),男,教授,博士,博士生导师,E-mail:jiangdz@ nudt.edu.cn
