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Three-dimensional simulation of forging using tetrahedral and hexahedral elements

机译：使用四面体和六面体元素的锻造三维模拟

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摘要

In this paper, numerical characteristics of triangular and tetrahedral MINI-elements are investigated through their application to forging simulation. The theoretical background is taken into account with emphasis on the numerical uncertainty due to the stabilizer, which is adopted for computational efficiency. The effect of the stabilizer is investigated by solving an axisymmetric upsetting process under various different conditions. A backward extrusion process of a cube is simulated using traditional tetrahedral and hexahedral elements assisted by the reduced integration scheme and tetrahedral MINI-elements and the predicted results are compared to show their difference and similarity. A rotor pole cold forging process is also simulated by a forging simulator with both tetrahedral MINI-elements and hexahedral elements capabilities and the predictions are compared with experiments. Hexahedral element capability runs manually while tetrahedral MINI-elements capability runs automatically with the help of an intelligent remeshing technique. It is shown that the tetrahedral MINI-elements capability can give quite accurate solution if assisted by the intelligent remeshing technique even though the tetrahedral MINI-elements itself is not numerically clear.
机译：本文通过将三角形和四面体MINI元素应用于锻造仿真研究了它们的数值特性。考虑了理论背景，并着重考虑了由于稳定器引起的数值不确定性，该数值不确定性被用于计算效率。通过解决各种不同条件下的轴对称up粗工艺来研究稳定剂的作用。利用传统的四面体和六面体单元，借助简化的积分方案和四面体MINI元素，模拟了立方体的向后挤压过程，并对预测结果进行了比较，以显示它们的区别和相似性。还通过具有四面体MINI元素和六面体元素功能的锻造模拟器来模拟转子磁极冷锻过程，并将预测结果与实验进行比较。六面体元素功能是手动运行的，而四面体MINI元素功能是借助智能重新网格化技术自动运行的。结果表明，即使四面体MINI元素本身在数值上不明确，但如果借助智能重新网格化技术，四面体MINI元素的功能也可以提供非常准确的解决方案。

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  • 来源
    《Finite elements in analysis & design》 |2009年第11期|745-754|共10页
  • 作者

    M.C. Lee; S.H. Chung; S.M. Jang; M.S. Joun;

  • 作者单位

    Department of Mechanical Engineering, Gyeongsang National University, 900 Gazwa-dong, Jinju-city, Gyeongnam 660-701, Republic of Korea;

    Hyundai-Steel Co. Ltd., 283 Eumnae-ri, Dangjin-gun, Chungnam 343-805, Republic of Korea;

    Department of Mechanical Engineering, Gyeongsang National University, 900 Gazwa-dong, Jinju-city, Gyeongnam 660-701, Republic of Korea;

    School of Mechanical and Aerospace Engineering, Cyeongsang National University, Jinju-city, Gyeongnam 660-701, Republic of Korea Research Center for Aircraft Parts Technology, Gyeongsang National University, 900 Gazwa-dong, Jinju-city, Gyeongnam 660-701, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    MINI-elements; triangular elements; tetrahedral elements; forging simulation; rotor pole forging; numerical uncertainty;

    机译：迷你元素三角形元素四面体元素锻造模拟转子极锻造;数值不确定性;

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