锻压技术

冲裁毛刺对疲劳寿命影响的数值仿真分析

英文标题：Influence of the blanking burr on fatigue life based on numerical simulation methods

作者：罗德洋1 胡朝辉2 3 廖毅1 余义1

分类号：TG386；U465.1

出版年,卷(期):页码：2016,41(12):46-52

摘要：

由于冲裁毛刺对疲劳性能具有很大的影响，运用线弹性模型对止动弹簧片冲裁毛刺进行数值仿真模拟，提出一种考虑冲裁毛刺对疲劳性能影响的疲劳计算方法。通过定量计算毛刺对零件结构几何边界应力的影响程度，得出因冲裁毛刺影响而造成的应力集中程度；综合材料应力-寿命曲线与载荷谱，运用疲劳积累损伤理论计算出零件的疲劳寿命；在数值仿真分析中计算出添加毛刺与未添加毛刺单元的零件疲劳寿命。通过实验对零件的疲劳寿命计算值进行对比分析验证，结果表明：定量考虑冲裁毛刺对结构的影响能够提高疲劳寿命的计算精度。

For the blanking burr that influencing the fatigue performance, the burr was numerically simulated by line spring model, and a new calculation method was proposed considering the influence of the blanking burr on fatigue life. Then, the influence of the burr on the geometric boundary stress of the part structure was calculated quantitatively, and the stress concentration caused by the burr was obtained. Furthermore, combining the materials stress-life curve with the load spectrum, the fatigue life of part was calculated by the damage theory of fatigue accumulation, and the fatigue life of part with and without adding element burr was calculated in the numerical simulation analysis. Finally, the fatigue life calculation was verified by experiment. The result indicates that the calculation precision of fatigue life can be improved by considering the influence of the burr on structure quantitatively.

基金项目：

湖南省自然科学基金资助项目（13JJB003）；广西科技开发计划（桂科重14122002-2）；广西汽车公共服务平台建设项目（20130301）；广西科学研究与技术开发计划项目（15129001）

作者简介：罗德洋（1989-），男，硕士 E-mail：deyang.luo@sgmw.com.cn 通讯作者：廖毅(1973-)，男，硕士，高级工程师 E-mail：liao.yi@sgmw.com.cn

参考文献：

［1］周传月，郑红霞，罗慧强. MSC.Fatigue疲劳分析应用与实例
［M］.北京：科学出版社，2005.

Zhou C Y, Zheng H X, Luo H Q. Fatigue Analysis Application with Examples
［M］. Beijing: Science Press, 2005.

［2］翁其金，徐新成.冲裁工艺及冲裁模设计
［M］.北京：机械工业出版社，2012

Weng Q J, Xu X C. The Blanking Technology and Die Design
［M］. Beijing: China Machine Press, 2012.

［3］张磊.金属冲裁毛刺的形成机理及控制工艺研究
［D］.上海：上海交通大学，2011.

Zhang L. Research on Formation Mechanism of Metal Blanking and Control Techniques of the Burr
［D］Shanghai: Shanghai Jiaotong University，2011.

［4］Jiang Y, Ding F. An approach for fatigue life prediction
［J］. ASME Journal of Engineering Materials and Technology,2007, 129(2): 182-189.

［5］姚卫星．结构疲劳寿命分析
［M］．北京：国防工业出版社，2004.

Yao W X. Analysis of Structure Fatigue Life
［M］. Beijing: National Defence Industry Press, 2004.

［6］黄宁．大型结构件的疲劳寿命预测方法研究
［D］.长沙：中南大学，2013.

Huang N. Research on Fatigue Life Prediction Methods for Large-Scale Components
［D］. Changsha：Central South University，2013.

［7］Rice J R, Levy N. The part-through surface crack in an elastic plate
［J］. Journal of Applied Mechanics,1972,39(1):185-194.

［8］Zhao J Z, Shu H D, Yi M Y. Analysis of surface cracks using the line-spring boundary element method and the virtual crack extension technique
［J］. International Journal of Fracture, 1993,60:158-160.

［9］Yong Niu, Weiguo Su, Fracture analysis of double-side adhesively bonded composite repairs to cracked aluminium plate using line spring model
［J］. Appl.Compos.Mater., 2015,72(9):234-236.

［10］中国航空研究院. 应力强度因子手册
［M］. 北京: 科学出版社，1993.

China Aviation Institute. Stress Intensity Factor Handbook
［M］. Beijing: Science Press,1993.

［11］Lee Y L, Pan J, Hathaway R, et al. Fatigue test and analysis Theory and Practice
［M］. 北京：国防工业出版社，2011.

Lee Y L,Pan J, Hathaway R,et al. Fatigue test and analysis Theory and Practice
［M］. Beijing:National Defence Industry Press,2011.

［12］乔艳江，孙强，李春旺，等.合金钢与铝合金疲劳极限的理论估算方法分析
［J］.力学与实践，2007,29（4）：48-51.

Qiao Y J,Sun Q,Li C W,et al.The fatigue limit estimation methods for alloy steels and aluminum alloy
［J］.Mechanics in Engineering,2007,29(4):48-51.

［13］李成林，韩振南，霍俊杰，等. 基于有限元的半挂牵引车车架疲劳寿命分析
［J］.工程设计学报，2013,20(10): 415-417.

Li C L, Han Z N, Huo J J, et al. Fatigue life analysis of semi-trailer frame based on FEM
［J］. Chinese Journal of Engineering Design, 2013,20(10): 415-417.

［14］段红燕，芮执元,李有堂，等. 弯扭条件下缺口参数对圆轴疲劳寿命的影响
［J］.稀有金属材料与工程,2013,42(2):549-552.

Duan H Y, Rui Z Y, Li Y T, et al. Effect of notch parameters on shaft fatigue life in bending and torsion loads
［J］. Rare Metal Materials and Engineering,2013, 42(2):549- 552.

［15］申秋燕，陆毅初，罗德洋.滑移门止动弹簧片的结构优化
［J］. 企业科技与发展，2014,(10):48-49.

Sheng Q Y, Lu Y C, Luo D Y. The optimization of sliding door check move reed structure
［J］. Sci-Tech. & Development of Enterprise, 2014，(10):48-49.

［16］高为国，钟丽萍. 机械工程材料
［M］. 长沙：中南大学出版社，2011.

Gao W G, Zhong L P. Meterial of Mechanical Engineering
［M］. Changsha: Central South University Press, 2011.

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