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浙江大学学报(工学版)
浙江大学学报(工学版)
航空航天技术     
300M钢耳片孔挤压强化全过程有限元模拟
何志明1, 张晓晶1, 刘天琦2, 杨树勋1
1.上海交通大学 航空航天学院,上海 200240；2.中航工业北京航空材料研究院,北京 100095
Numerical simulation of whole process of cold expansion in 300M steel lug
HE Zhi ming1, ZHANG Xiao jing1, LIU Tian qi2, YANG Shu xun1
1. School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai 200240, China; 2. AVIC Beijing Institute of Aeronautical Materials, Beijing 100095, China
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摘要：

 采用三维非线性有限元方法模拟300M钢耳片开缝衬套冷挤压的完整过程.分析开缝衬套挤压、铰孔及孔边挤压三道工序对孔边残余应力场的影响,与试验测量结果进行比较,表明模拟过程是可行、有效的.开展铰削量及孔边挤压预制倒圆角半径的参数化分析,给出铰削量对残余应力场的影响规律及最佳的预制倒圆角半径,通过疲劳试验及断口分析验证模拟结果的合理性.疲劳试验结果表明,经过开缝衬套挤压及铰孔工艺之后,疲劳寿命提高近137%,进行孔边挤压强化会将疲劳寿命提高183%.
Abstract:

A developed finite element model of 300M steel lug was used to analyze the effects of split sleeve expansion, reaming and hole edge expansion on residual stress field based on three dimensional nonlinear finite element method. The predicted stress fields accorded with the experimental results. The simulation method was verified feasible. The simulation had highlighted the effects of the reserved round radius and the reaming cuttings weight on the residual stress field. The simulation results were verified by the fatigue tests and the fracture surfaces. Fatigue test results show that the fatigue life increases by 137% after split sleeve cold expansion and reaming process and the hole edge expansion will improve fatigue life by 183%.
出版日期: 2016-04-01
:  TG 376  
通讯作者: 张晓晶,女,副教授. ORCID: 0000 0003 0958 472X.     E-mail: zhangxj76@sjtu.edu.cn
作者简介: 何志明（1991—）,男,硕士生,从事结构疲劳与断裂的研究.ORCID: 0000 0002 3442 2821. E-mail: hzm093518@163.com
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引用本文:

何志明, 张晓晶, 刘天琦, 杨树勋. 300M钢耳片孔挤压强化全过程有限元模拟[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.04.025.

HE Zhi ming, ZHANG Xiao jing, LIU Tian qi, YANG Shu xun. Numerical simulation of whole process of cold expansion in 300M steel lug. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.04.025.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.04.025    或    http://www.zjujournals.com/eng/CN/Y2016/V50/I4/783

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