航空整体结构件加工变形有限元数值仿真

张以都; 张洪伟

航空整体结构件加工变形有限元数值仿真

北京航空航天大学虚拟现实技术与系统国家重点实验室, 北京 100191

基金项目: 国防基础科研资助项目

详细信息

作者简介:
张以都(1959-),男,北京人,教授,ydzhang@buaa.edu.cn.

中图分类号: TP 391.77
计量
- 文章访问数: 3497
- HTML全文浏览量: 243
- PDF下载量: 1535
- 被引次数: 0
出版历程
- 收稿日期: 2008-07-20
- 网络出版日期: 2009-02-28

Finite element simulation of machining deformation for aeronautical monolithic component

State Key Laboratory of Virtual Reality Technology and Systems, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 加工变形是航空整体结构件数控加工领域普遍存在的问题.选取典型航空整体结构件,基于有限元法研究了毛坯初始残余应力对于加工变形的影响,仿真结果与试验结果一致;对残余应力引起的加工变形特点进行了分析,基于不同加工路径对航空结构件加工变形进行了有限元数值仿真,结果表明,对于单一残余应力引起的加工变形分析,可以忽略加工路径的影响.考虑铣削力与残余应力的耦合作用,建立了残余应力、铣削力的耦合力学模型,给出了具体仿真流程,针对不同加工路径进行有限元仿真,研究了铣削力对于残余应力分布及最终加工变形的影响.
- 残余应力 /
- 加工变形 /
- 有限元 /
- 铣削力 /
- 加工路径
Abstract: Machining deformation has been a bottle-neck issue in aeronautical manufacturing field. Based on finite element simulation, the influence of original residual stresses on the deformation in the process of machining for aeronautical monolithic component was studied. The redistribution law of residual stresses during machining and the trend of deformation change were analyzed. The simulation conclusions agree with experimental results. The machining deformation characteristics due to residual stresses were analyzed and the simulation of different machining path was carried out. The results indicate that the research on deformation caused by residual stresses alone can neglect the effect of machining path. The coupling effect between residual stress and milling force was taken into account and the simulation was performed for different machining path.
- residual stress /
- machining distortion /
- finite element method /
- milling force /
- machining path

HTML全文

参考文献(1)

[1] El-Axir M H. A method of modeling residual stress distribution in turning for different materials[J].International Journal of Machine Tools & Manufacture, 2002, 42: 1055-1063 [2] Fihri Fassi H,Bousshine L, Chaaba A,et al.Numerical simulation of orthogonal cutting by incremental elastoplastic analysis and finite element method[J].Journal of Materials Processing Technology,2003,14:181-188 [3] Martin Baker. Finite element simulation of high-speed cutting forces[J]. Journal of Materials Processing Technology,2006,176:117-126 [4] Brinmsmeier E,Hannover J,Cammett T,et al. Residual stress-measurement and cause in machining process[J].Annals of the CIRP,1982,31(2):491-509 [5] Heiz A,Haszler A,Keidel C,et al.Recent development in aluminum alloy for aerospace application[J].Mater Sci Eng A,1999,A280:102-107 [6] 黄志刚,柯映林.飞机整体框类结构件铣削加工的模拟研究[J].中国机械工程,2004,15(11):991-995 Huang Zhigang,Ke Yinglin.Study on key technologies of milling process simulation for aerospace monolithic components[J].China Mechanical Engineering, 2004,15(11):991-995(in Chinese) [7] 王秋成,柯映林,章巧芳.7075铝合金板材残余应力深度梯度的评估[J].航空学报,2003,24(4):336-338 Wang Qiucheng,Ke Yinglin,Zhang Qiaofang.Evaluation of residual stress depth profiling in 7075 aluminum alloy plates[J].Acta Aeronautica et Astronautica Sinica,2003,24(4):336–338 (in Chinese) [8] 张洪伟,张以都,赵晓慈,等.航空结构件加工变形仿真关键技术[J].北京航空航天大学学报,2008,34(2):239-243 Zhang Hongwei, Zhang Yidu,Zhao Xiaoci,et al. Research on key techniques in the simulation of machining distortion for aeronautical monolithic component[J].Journal of Beijing University of Aeronautical and Astronautics, 2008,34(2):239-243(in Chinese) [9] 董兆伟.铝合金整体结构件铣削加工残余应力及变形研究 . 北京:北京航空航天大学机械工程及自动化学院,2006 Dong Zhaowei.Study on the milling residual stress and deformation of the aluminum alloy integrated framework .Beijing:School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics,2006(in Chinese) [10] 王立涛.关于航空框类结构件铣削加工残余应力和变形机理的研究 . 杭州:浙江大学机械与能源工程学院,2003 Wang Litao.Study on residual stresses and distortion theory of aeronautical frame structure in the milling .Hangzhou:College of Mechanical and Energy Engineering,Zhejiang University,2003(in Chinese)

施引文献

资源附件(0)

访问统计