基于灰色系统理论的Al-Zn-Mg合金板材
疲劳寿命预测

doi:10.16183/j.cnki.jsjtu.2018.02.016

摘要/Abstract

摘要： 以Al-Zn-Mg合金板材的疲劳性能为指标，通过测试获得Al-Zn-Mg合金疲劳寿命的S-N曲线.将灰色系统理论模型运用到Al-Zn-Mg合金板材疲劳寿命的预测中，通过Al-Zn-Mg合金的S-N曲线来评估和比较灰色系统模型寿命预测的准确性.计算结果表明，灰色系统模型预测值与 S-N 曲线比较接近.在多步预测中，等维灰度均值GM(1,1)模型与原始均值GM(1,1)模型相比具有较高的预测精度，可以更好地预测Al-Zn-Mg合金板材材料的疲劳寿命.

关键词: Al-Zn-Mg合金, 灰色系统理论模型, 等维灰度GM(1, 1)模型, 疲劳寿命

Abstract: The S-N curve was obtained by tests based on the fatigue property of Al-Zn-Mg alloy plates. The grey system theory model was applied in predicting fatigue life of the plates while the prediction was evaluated and compared with the S-N curve. The results show that the predicative values of the gray system model are close to those of the S-N curve, and the equal dimension gray model GM(1,1) has a higher prediction accuracy than the original model GM(1,1) in multi-step prediction. It provides a better estimation of the fatigue life of Al-Zn-Mg aluminum alloy plates.

Key words: Al-Zn-Mg alloy, grey system theory model, equal dimension gray model GM(1,1), fatigue life

中图分类号:

唐鸿远a，张臻b,c，邓运来a,b,c,叶凌英a，钱鹏伟b,c，赵龙a. 基于灰色系统理论的Al-Zn-Mg合金板材疲劳寿命预测[J]. 上海交通大学学报（自然版）, 2018, 52(2): 228-232.

TANG Hongyuana,ZHANG Zhenb,c,DENG Yunlaia,b,c,YE Lingyinga,QIAN Pengweib,c,ZHAO Longa. Prediction for Fatigue Life of Al-Zn-Mg Alloy Based on Grey System Theory[J]. Journal of Shanghai Jiaotong University, 2018, 52(2): 228-232.

参考文献

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