|
|
论文:2013,Vol:31,Issue(3):491-497 |
|
|
引用本文： |
|
|
詹梅, 李甜, 王巧玲, 杨合. 热剪切旋压过程中芯模对零件形貌和壁厚分布的影响[J]. 西北工业大学 |
|
|
Zhan Mei, Li Tian, Wang Qiaoling, Yang He. Effects of Mandrel on Hot Shear Spinning of Titanium Alloy[J]. Northwestern polytechnical university |
|
|
|
|
|
|
|
| 热剪切旋压过程中芯模对零件形貌和壁厚分布的影响 |
|
| 詹梅, 李甜, 王巧玲, 杨合 |
|
| 西北工业大学 凝固技术国家重点实验室, 陕西 西安 710072 |
| 摘要: |
| 为了揭示芯模对钛合金加热剪切旋压成形的作用机制,采用数值模拟方法,对比分析了贴模和不贴模加热剪切旋压件的形貌以及壁厚分布。结果表明:成形前期,二旋压件的平直度和锥度均较好,成形中后期(65%)后,不贴模旋压件母线会塌陷。工件在变形区的壁厚减薄由纯剪切变形和拉伸变形共同作用产生,且纯剪切变形起主导作用。贴模旋压件壁部壁厚较均匀,而不贴模旋压件的波动较大,呈现中部小两端大的趋势。成形中后期的母线塌陷使得不贴模旋压件壁厚减薄不足,因此其靠近凸缘部位的壁厚远大于该区域贴模旋压件的壁厚。为了提高不贴模旋压件的直线度和锥度,不贴模旋压过程中需要对工件凸缘施加约束以防止母线的塌陷,或预先通过设定合适的旋轮轨迹进行塌陷补偿。 |
| 关键词:
ABAQUS
工件形貌
加热剪切旋压
芯模
旋压力
工件壁厚
|
|
| Effects of Mandrel on Hot Shear Spinning of Titanium Alloy |
|
| Zhan Mei, Li Tian, Wang Qiaoling, Yang He |
|
| State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072 China |
| Abstract: |
| In order to disclose the effects of mandrel on the hot shear spinning of titanium alloy, the differences of topography and thickness distribution of contour spinning parts from those of non-contour spinning parts were ana-lyzed.Subsection 1.1 of the full paper improves the finite element model of Ref.14.Subsection 2.1 analyzes the differences of topography.Fig.4 through 7 give differences of various distributions, which include thickness distri-butions at various stages of spinning process.The above-mentioned differences and their analysis show preliminarily that: (1) the linearity and taper of each workpiece is excellent at early stage of spinning process; however, the ca-ving in the generatrix of mandrel occurs for non-contour spinning, thus the cone angle of generatrix is less than the designed value; (2) the thickness reduction at deforming area is the combined action of pure shear deformation and tensile deformation, and the former is predominant; (3) the thickness of the workpiece spun by contour spinning distributes uniformly, but for non-contour spinning the thickness of the workpiece fluctuates along generatrix and an obvious under-thinning occurs at the final stage; (4) for non-contour spinning process, proper roller path or con-straints at the location of flange is necessary to avoid the caving in and reduction of cone angle. |
| Key words:
ABAQUS
stress
strain
temperature
topography
hot shear spinning
mandrel
spinning force
thickness
|
|
| 收稿日期: 2012-04-12
修回日期:
|
| DOI: |
| 基金项目: 优秀青年科学基金(51222509);国家863计划(2008AA04Z122);国家自然科学基金(50405039)资助 |
| 通讯作者:
Email： |
| 作者简介: 詹梅(1972-),女,西北工业大学教授、博士生导师,主要从事先进塑性加工技术及数值模拟的研究。
|
|
| 相关功能 |
|
|
|
|
| 作者相关文章 |
|
| 詹梅 在本刊中的所有文章 |
| 李甜 在本刊中的所有文章 |
| 王巧玲 在本刊中的所有文章 |
| 杨合 在本刊中的所有文章 |
|
|
|
|
|
|
|
|
参考文献: |
|
|
[1] Xu Wenchen, Shan Debin, Wang Zhenlong, et al.Effect of Spinning Deformation on Microstructure Evolution and Mechanical Property of TA15 Titanium Alloy.Transactions of Nonferrous Metals Society of China, 2007, 17: 1205-1211
[2] 陈 宇, 康达昌, 金晓鸥.钛合金锥形件温热剪旋热力耦合有限元模拟.材料科学与工艺, 2006, 14(1): 18-21 Chen Yu, Kang Dachang, Jin Xiaoou.FEM Coupled Thermal Simulation of Warm Shear Spinning of Cone Workpiece of Titanium Alloy.Materials Science and Technology, 2006, 14(1): 18-21 (in Chinese)
[3] Ken-ichiro Mori, Minoru Ishiguro, Yuta Isomura.Hot Shear Spinning of Cast Aluminium Alloy Parts.Journal of Materials Processing Technology, 2009,(209): 3621-3627
[4] 夏琴香, 阮 锋等.锥形件柔性旋压成形质量的研究.锻压技术, 2003, 3: 35-38 Xia Qinxiang, Ruan Feng, et al.Analysis on Forming Quality in Flexible Spinning of Cones.Forging and Stamping Technology,2003, 3: 35-38 (in Chinese)
[5] Kawai K, Kushida H, Kudo H.Rotary Drawing of Cylindrical Cup.Advanced Technology of Plasticity, 2002, 2: 1429-1434
[6] Kawai K, Kushida H, Kudo H.A Flexible Shear Spinning of Axi-Symmetrical Shells with a General-Purpose Mandrel.Journal of Materials Processing Technology, 2007, 192-192: 13-17
[7] Matsubara S.A Computer Numerically Controlled Dieless Incremental Forming of a Sheet Metal.Proceedings of the Institution of Mechanical Engineers Part B.Journal of Engineering Manufacture, 2001, 215(7): 959-966
[8] Zhan Mei, Qin Yatao, Chen Fei, et al.Mechanism of Mandrel on Thickness and Topography for Parts with Shear Spinning.Advanced Materials Research, 2012, 430-432, 949-955
[9] 陈芙蓉, 霍立兴, 张玉凤.BT20 钛合金电子束焊接残余应力三维有限元数值模拟.焊接学报, 2004, 25(1): 61-64 Chen Furong, Huo Lixing, Zhang Yufeng.Finite Element Calculation of Residual Stresses on Electron Beam Welded BT20 Plates.Transactions of the China Welding Institution, 2004, 25(1): 61-64 (in Chinese)
[10] 李春胜, 黄德彬主编.金属材料手册.北京: 化学工业出版社, 2005 Li Chunsheng, Huang Debin.Handbook of Metal Materials.Beijing: Chemical Industry Press, 2005 (in Chinese)
[11] 李 虎.钛合金薄壁壳体热旋三维热力耦合有限元分析: [硕士学位论文].西安: 西北工业大学, 2008 Li Hu.Coupled 3 D Thermal-Mechanical FEM Analysis of Hot Spinning of Titanium Alloy Thin-Walled Shell.Master Degree Dissertation, Xi'an, Northwestern Polytechnical University, 2008 (in Chinese)
[11] 徐洪烈.强力旋压技术.北京: 国防工业出版社, 1983 Xu Honglie.Power Spinning Technology.Beijing: National Defence Industrial Press, 1983 (in Chinese) |
|
|
|
|
|
|
|
