摘要
大展弦比太阳能飞机推进系统电池的位置将影响机翼结构的固有频率及振动响应,较大的振动响应将影响飞机的安全。首先建立机翼的三维模型,并进行理论分析,其次利用有限元分析软件进行分析。研究表明理论分析结果与有限元分析结果相一致,电池位置对于机翼结构的一阶扭转频率影响较大且电池位置越靠前振动响应越小。研究结果可作为布置电池位置的基本参考。
Different battery arrangement for large aspect ratio solar-powered aircraft propulsion system can affect the natural frequency and vibration response of wing structure. Large vibration response will affect the safety of aircraft. Firstly, three-dimensional model of the wing is established and the theory is analyzed. Then finite element analysis is performed. The study shows that the results of theoretical analysis are consistent with the results of finite element analysis. Battery position has significant influence on the first order torsional frequency of wing structure, and a more forward battery leads to smaller vibration response. The study results can be used as a basic reference of battery arrangement.
出处
《工程力学》
EI
CSCD
北大核心
2016年第B06期262-265,共4页
Engineering Mechanics
关键词
机翼结构
振动响应
固有频率
激振力
电池布置
wing structure
vibration response
natural frequency
exciting force
battery arrangement
