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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Development of an adaptive directional reduced integration technique and its application to rigid-plastic finite-element analysis of heading and backward extrusion
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Development of an adaptive directional reduced integration technique and its application to rigid-plastic finite-element analysis of heading and backward extrusion

机译：自适应方向性简化积分技术的发展及其在航向和后向挤压的刚塑性有限元分析中的应用

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摘要

In the analysis of metal forming processes, such as, heading and backward extrusion try the rigid-plastic finite-element method, a few numerical instabilities, at element and shear locking and zero energy mode, may occur. The occurrence of these instabilities is investigated in both the backward extrusion and the heading process using various numerical integration schemes and with different element types. The results obtained are compared in terms of stability and efficiency of computation, by applying some existing integration techniques and also with a somewhat different numerical technique, proposed here, and called an adaptive directional reduced integration scheme (ADRI). Using this integration scheme and applying the rigid-plastic finite-element method, no zero energy mode was found to have been generated during solution of the above problems, even with the local severe deformations occurring at high reductions, in each of these cases. These and other experimental results are given and commented upon.
机译：在金属成形过程的分析中，例如head锻和向后挤压，请尝试使用刚塑性有限元方法，在单元和剪切锁定以及零能量模式下可能会出现一些数值不稳定性。使用各种数值积分方案和不同的元素类型，在向后挤压和航向过程中研究了这些不稳定性的发生。通过应用一些现有的积分技术，并以此处提出的略有不同的数值技术，将获得的结果在稳定性和计算效率方面进行比较，这被称为自适应定向缩减积分方案（ADRI）。使用这种集成方案并应用刚塑性有限元方法，在上述情况的解决过程中，即使在每种情况下，即使局部严重变形都以高压缩率出现，也未发现零能量模式。给出并评论了这些和其他实验结果。

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