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论文:2014,Vol:32,Issue(5):799-804 |
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引用本文： |
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詹梅, 郭靖, 陈飞, 杨合. 带横向内筋特征构件外强旋压成形机理研究[J]. 西北工业大学 |
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Zhan Mei, Guo Jing, Chen Fei, Yang He. Exploring Forming Mechanism of a Part with Transverse Inner Rib during Power Spinning[J]. Northwestern polytechnical university |
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| 带横向内筋特征构件外强旋压成形机理研究 |
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| 詹梅, 郭靖, 陈飞, 杨合 |
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| 西北工业大学 材料学院, 陕西 西安 710072 |
| 摘要: |
| 为了揭示带横向内筋特征构件外强旋成形机理,基于ABAQUS/Explicit平台建立了符合实际的带横向内筋构件外强旋成形三维有限元模型,分析了筋部充填特征及其金属流动规律。结果表明:工件筋部充填沿周向分布均匀,轴向分布较不均匀,其中筋部中区出现明显的表面凹陷,该凹陷是充筋中期轴向拉应力的减薄作用和充筋后期工件非筋部的弯曲靠模作用机制共同造成的;筋部成形前期,金属的径向流动大于轴向流动,筋部成形中、后期,金属的轴向流动大于径向流动。 |
| 关键词:
横向内筋
强力旋压
三维有限元
筋部特征
成形机理
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| Exploring Forming Mechanism of a Part with Transverse Inner Rib during Power Spinning |
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| Zhan Mei, Guo Jing, Chen Fei, Yang He |
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| Department of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| In order to reveal the forming mechanism of a part with a transverse inner rib during power spinning,a3D finite element model for the process was established based on ABAQUS/Explicit in this study.With this model,the rib characteristics and the metal flow rules during the filling process were researched.The results and their a-nalysis show preliminarily that: the filling of metal to the rib groove along the hoop direction is homogeneous whileit is non-homogeneous along the tangential direction.Besides this,there is an obvious depression in the outer wallin the middle zone of the rib.The forming mechanism of this depression explored by us,we believe,consists of:(1) this depression results from the thinning effect due to axial tensile stress during the middle stage of rib fillingand the closing to the mandrel as a result of the bending of the non-rib part of the workpiece at the end of rib fill-ing; (2) as the filling process goes on,the flow of metal along the radial direction is larger than that along the tan-gential direction in the earlier stage,while the former becomes smaller than the latter at the end of the fillingprocess. |
| Key words:
ABAQUS
bending(forming)
computer simulation
cost reduction
experiments
finite elementMethod
flow of solids
forming
mathematical models
reliability
schematic diagrams
spinning
stress concentration
thickness control
thickness measurement;forming mechanism
power spin-Ning
rib characteristic
transverse inner rib
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| 收稿日期: 2013-12-08
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金优秀青年科学基金(51222509);凝固技术国家重点实验室自主课题(97-QZ-2014;90-QP-2013)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及数值模拟的研究。
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| 作者相关文章 |
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| 詹梅 在本刊中的所有文章 |
| 郭靖 在本刊中的所有文章 |
| 陈飞 在本刊中的所有文章 |
| 杨合 在本刊中的所有文章 |
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参考文献: |
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[3] 詹梅，李虎，杨合，等. 大型复杂薄壁壳体多道次旋压过程中的壁厚变化[J]. 塑性工程学报，2008，15(2): 115-121Zhan Mei，Li Hu，Yang He，et al. Wall Thickness Variation during Multi-Pass Spinning of Large Complicated Shell[J]. Jour-nal of Plasticity Engineering，2008，15(2): 115-121 (in Chinese)
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