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| 腐蚀疲劳裂纹的虚拟扩展方法研究 | |
| 引用本文： | 张有宏,吕国志,常新龙,王慧,陈跃良. 腐蚀疲劳裂纹的虚拟扩展方法研究[J]. 腐蚀科学与防护技术, 2008, 20(4): 247-249 |
| 作者姓名： | 张有宏 吕国志 常新龙 王慧 陈跃良 |
| 作者单位： | 1. 第二炮兵工程学院,西安,710025 2. 西北工业大学,航空学院,西安,710072 3. 海军航空工程学院青岛分院,青岛,266041 |
| 摘 要： | 以紧固孔结构件腐蚀疲劳试验为基础，研究了腐蚀疲劳裂纹虚拟扩展方法即随机过程和AFGROW模拟方法.以试验数据拟合得到的Paris公式为基础，在随机过程方法中考虑了正态随机过程和对数正态随机过程，得到裂纹长度和循环数之间的模拟曲线，给出指定循环数下裂纹长度的概率模型并和实验结果进行了比较.利用AFGROW对腐蚀疲劳裂纹扩展进行了模拟，裂纹扩展模拟曲线与实验值符合较好. |
| 关 键 词： | 虚拟裂纹扩展 腐蚀疲劳 随机过程 AFGROW 铝合金 |
| 收稿时间： | 2007-01-23 |
| 修稿时间： | 2007-05-10 |
VIRTUAL CORROSION FATIGUE CRACK PROPAGATION TESTS |
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| ZHANG You-hong,LV Guo-zhi,CHANG Xin-long,WANG Hui,CHEN Yue-liang. VIRTUAL CORROSION FATIGUE CRACK PROPAGATION TESTS[J]. Corrosion Science and Protection Technology, 2008, 20(4): 247-249 | |
| Authors: | ZHANG You-hong LV Guo-zhi CHANG Xin-long WANG Hui CHEN Yue-liang |
| Affiliation: | 1The Second Artillery Engineering College;Xi′an 710025; 2School of Aeronautics;Northwest Polytechnical University;Xi′an 710072; 3Naval Aeronautical Engineering Academy Qingdao Branch;Qingdao 266041 |
| Abstract: | The fatigue crack propagation behavior of LY12CZ aluminum alloy fastener with a central hole has been investigated in 3.5%NaCl solution.Based on the experimental results,the virtual corrosion fatigue crack propagation tests were proposed.Two virtual crack propagation methods of stochastic processes and AFGROW simulation were discussed.The parameters of Paris equation were obtained by numerical fitting method.The normal process and lognormal process were considered for the stochastic process method.The stoch... |
| Keywords: | virtual crack propagation corrosion fatigue stochastic processes AFGROW aluminum alloy |
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