摘要
进行了在加速腐蚀当量环境作用后 ,LC4铝合金在同级载荷作用下疲劳损伤累积规律的实验研究。实验结果表明 ,此时的同级载荷试验类似于常规条件下的“低、高”两级载荷试验 ,前级载荷对腐蚀作用后的后级载荷的疲劳行为也有“低载锻炼效应” ,因此 ,提出了考虑腐蚀环境作用的损伤累积“迟滞”模型。与实验结果的比较表明损伤累积“迟滞”
Tests of LC4 aluminum fatigue damage cumulative under fatigue(l) + corrosion + fatigue(2) mode have been carried out. The test results show that equal level loading tests under the mode have an analogy with low-high two level loading tests under general conditions. Preceding loading has a forging effect of low loading on the fatigue behavior of behind loading. Hence, this paper presents a damage cumulative hysteretic model under corrosion environment. The predicted results of the damage cumulative hysteretic model and the test results mode are in good agreement.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2003年第3期234-236,共3页
Acta Aeronautica et Astronautica Sinica
基金
航空基础科学基金资助课题 (0 0b5 2 0 15 )