摘要
介绍了某型飞机随机载荷谱疲劳试验所采用的载荷值计算模型与算法、随机载荷状态序列与飞行顺序的生成方法、按照关键通道载荷变化量配置加载时间的方法,通过编程实现了复杂随机加载谱的自动生成以及加载时间的合理配置,提高了随机载荷谱计算的自动化程度,也提高了试验的稳定度与加载速度,为改进随机谱疲劳试验的应用技术做出了有益的尝试。
Focusing on the random load spectrum adopted for the aircraft structure fatigue test, model and algorism for computing load values, method for generating random load status sequence and flight sequence, and policy of setting up loading time according to load changing amount of key channel are presented in the paper. Automatic generation of complex random load spectrum and setting of the suitable loading time are established by programming. Automation level of generating random load spectrum, smooth level and loading velocity of test are promoted. It gives the trying to improve the application technique on random load spectrum for fatigue tests.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2007年第3期586-589,共4页
Acta Aeronautica et Astronautica Sinica
关键词
疲劳
随机谱
试验
加载
fatigue
random load spectrum
test
loading
