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7B04-T6铝合金腐蚀疲劳交替寿命预测模型

李昌范 何宇廷 张胜 李旭 杜旭 张腾

李昌范, 何宇廷, 张胜, 李旭, 杜旭, 张腾. 7B04-T6铝合金腐蚀疲劳交替寿命预测模型[J]. 航空动力学报, 2016, 31(5): 1073-1080. doi: 10.13224/j.cnki.jasp.2016.05.007
引用本文: 李昌范, 何宇廷, 张胜, 李旭, 杜旭, 张腾. 7B04-T6铝合金腐蚀疲劳交替寿命预测模型[J]. 航空动力学报, 2016, 31(5): 1073-1080. doi: 10.13224/j.cnki.jasp.2016.05.007
LI Chang-fan, HE Yu-ting, ZHANG Sheng, LI Xu, DU Xu, ZHANG Teng. Life prediction model of 7B04-T6 aluminum alloy under alternate action of corrosion and fatigue[J]. Journal of Aerospace Power, 2016, 31(5): 1073-1080. doi: 10.13224/j.cnki.jasp.2016.05.007
Citation: LI Chang-fan, HE Yu-ting, ZHANG Sheng, LI Xu, DU Xu, ZHANG Teng. Life prediction model of 7B04-T6 aluminum alloy under alternate action of corrosion and fatigue[J]. Journal of Aerospace Power, 2016, 31(5): 1073-1080. doi: 10.13224/j.cnki.jasp.2016.05.007

7B04-T6铝合金腐蚀疲劳交替寿命预测模型

doi: 10.13224/j.cnki.jasp.2016.05.007
基金项目: 

国家自然科学基金(51475470)

详细信息
    作者简介:

    李昌范(1986-),男,河南民权人,博士生,主要从事飞机结构可靠性与安全性研究.

  • 中图分类号: V216.3

Life prediction model of 7B04-T6 aluminum alloy under alternate action of corrosion and fatigue

  • 摘要: 利用7B04-T6铝合金进行了预腐蚀试验和"腐蚀+疲劳+腐蚀+疲劳+……"交替模式作用下的腐蚀疲劳交替试验.试验结果表明:在腐蚀疲劳交替作用下,试验件寿命比相同腐蚀时间作用下的预腐蚀试验件寿命长.利用试验结果建立了基于损伤力学和非线性损伤累积理论的腐蚀疲劳交替寿命预测模型.提出了利用损伤指数描述腐蚀损伤和疲劳损伤在交替过程中的耦合关系,并分析了损伤指数变化对模型迟滞因子和模型预测精度的影响.通过模型分析,在腐蚀疲劳交替过程中,疲劳加载次数对寿命的影响大于腐蚀时间的影响,并且随着加载次数增加试验件的寿命也增加.

     

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出版历程
  • 收稿日期:  2016-01-10
  • 刊出日期:  2016-05-28

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