FINITE ELEMENT ANALYSIS OF CENTRAL BURSTING DEFECTS OCCURRING IN COLD FORWARD EXTRUSION

机译：冷前挤压过程中发生的中心爆裂缺陷的有限元分析

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An improved approach to simulating the formation of central bursting defects is presented in this paper. The rigid-plastic finite element method and a modified McClintock damage model are employed. An improved node-splitting technique with degenerate element cleaning is proposed. The technique is applied to several cold forward extrusion processes to reveal the effects of reduction of area, die conical angle, and friction on the formation of central bursting defects. A comparison with experimental results and predictions found in the literature shows that the present analysis provides more realistic predictions of the shape of a central bursting defect (i.e., an obtuse V-shape, which is typical).

机译：本文提出了一种模拟中心爆裂缺陷形成的改进方法。采用了刚塑性有限元方法和修正的McClintock损伤模型。提出了一种具有退化元素清洗的改进的节点分离技术。将该技术应用于几种冷前向挤压工艺，以揭示减小的面积，模锥角和摩擦对形成中心爆裂缺陷的影响。与文献中的实验结果和预测结果的比较表明，本分析提供了对中央爆裂缺陷形状（即典型的钝V形）的更现实的预测。

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来源
《ASME international manufacturing science and engineering conference 2011》|2011年|p.169-174|共6页
会议地点 Corvallis OR(US);Corvallis OR(US)
作者
Man-Soo Joun; Min-Cheol Kim; Duk-Jae Yoon; Ho-Joon Choi; Yo-Hun Son;
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作者单位

Department of Mechanical Engineering, Gyeongsang National University Jinju, Republic of Korea;

Department of Mechanical Engineering, Gyeongsang National University Jinju, Republic of Korea;

Korea Institute of Industrial Technology (KITECH) Incheon, Republic of Korea;

Korea Institute of Industrial Technology (KITECH) Incheon, Republic of Korea;

Youngsin Metal Industrial Co. Pyeongtaek, Republic of Korea;

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原文格式 PDF
正文语种 eng
中图分类机械制造工艺;
关键词
finite element analysis; central bursting defect; node splitting scheme; mcclintock damage model;

机译：有限元分析;中央爆裂缺陷节点拆分方案； mcclintock损伤模型;

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专利

1. 上限分析法预测棒材在挤压过程中的中心开裂缺陷 [J] . Amir PARGHAZEH, Heshmatollah HAGHIGHAT 中国有色金属学报（英文版） . 2016,第011期
2. 上限分析法预测棒材在挤压过程中的中心开裂缺陷 [J] . Amir PARGHAZEH, Heshmatollah HAGHIGHAT 中国有色金属学报：英文版 . 2016,第011期
3. Criterion for Prevention of Central Bursting in Forward Extrusions Through Spherical Dies Using the Finite Element Method [J] . S. Sriram, C. J. Van Tyne Journal of manufacturing science and engineering: Transactions of the ASME . 2002,第1期

机译：有限元法防止球形模向前挤压中部爆裂的准则
4. Steady-state finite-element analysis of cold forward extrusion [J] . B. P. P. A. Gouveia, J. M. C. Rodrigues, P. A. F. Martins Journal of Materials Processing Technology . 1998,第1a3期

机译：冷前挤压的稳态有限元分析
5. Finite element simulation and experimental investigation of cold forward extrusion process [J] . Dorin Luca MATEC Web of Conferences . 2018,第3期

机译：冷前挤压工艺的有限元模拟与实验研究
6. FINITE ELEMENT ANALYSIS OF CENTRAL BURSTING DEFECTS OCCURRING IN COLD FORWARD EXTRUSION [C] . Man-Soo Joun, Min-Cheol Kim, Duk-Jae Yoon, ASME international manufacturing science and engineering conference . 2011

机译：冷向前挤压中中央爆破缺陷的有限元分析
7. A STUDY OF THE EXTRUSION CENTRAL BURST DEFECT. [D] . GURNEY, FERDINAND J. -1

机译：挤压中央爆裂缺陷的研究。
8. Biomechanical Effects of Different Auxiliary-Aligner Designs for the Extrusion of an Upper Central Incisor: A Finite Element Analysis [O] . R. Savignano, R. Valentino, A. V. Razionale, 2019

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9. Study on Chevron Crack Occurring in a 4-stage Open Cold Extrusion Process by Finite Element Method [O] . H.S. Hwang, Y.S. Lee, M.S. Joun 2017

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10. A Phenomenological Mechanism for the Occurrence of the Extrusion Central Burst Defect. [R] . gurney, f. j. 1979

机译：挤压中心爆裂缺陷发生的现象学机制。

FINITE ELEMENT ANALYSIS OF CENTRAL BURSTING DEFECTS OCCURRING IN COLD FORWARD EXTRUSION

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