摘要
研究用于变体机翼后缘的U型复合材料蒙皮处于不同预变形下的动态特性。利用激振器对机翼后缘激振，模拟飞行中变体机翼后缘的环境振动，通过改变机翼后缘的偏转角度（0～25°），采集各U型波纹的动态应变信号进行数据分析。结果表明：蒙皮的预变形越大，振动所引起的U型蒙皮的变形越小；该蒙皮所能承受的机翼后缘角度偏转的安全工作范围为0—15°；用电阻应变片测量U型蒙皮波峰处的动态应变具有一定的实时性和可行性。
The dynamic behavior of U-type skin for the trailing edge of morphing wing in different pre-deformation state was studied. Under excitation of Vibration Exciter, the enviromental vibration of the trailing edge of morphing wing was simulated, the trailing edge deflection angle was changed （from 0° to 25° ） to acquire dynamic strain signal of each U-type, and data analysis was followed. As indicated in experiments, bigger pre-deformation equals smaller U-type skin deformation caused by vibration; the safe operating range of deflection angle of the trailing edge which the skin can withstand is 0° to 15°; the usage of resistance strain gage for measuring dynamic strain signal guarantees real time and feasibility.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2014年第4期26-29,共4页
Ordnance Material Science and Engineering
基金
国家自然科学基金(51075207)
航空基金项目(2011ZA52013)
