节点文献
腐蚀环境下LC4铝合金疲劳损伤累积规律研究
Research on Fatigue Damage Cumulative Rule under Corrosion Environment
【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”模型有较好的预测精度
【Abstract】 Tests of LC4 aluminum fatigue damage cumulative under “fatigue(1)+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. The predicted results of the damage cumulative hysteretic model and the test results mode are in good agreement.
【Key words】 environment; calendar life; fatigue damage; damage accumulation; corrosion; hysteretic model;
- 【文献出处】 航空学报 ,Acta Aeronautica Et Astronautica Sinica , 编辑部邮箱 ,2003年03期
- 【分类号】V215.52
- 【被引频次】15
- 【下载频次】230