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首页> 外文会议>12th International Conference on Analysis of Discontinuous Deformation >Preliminary study on three-dimensional flat-top partition of unity based high-order DDA
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Preliminary study on three-dimensional flat-top partition of unity based high-order DDA

机译：基于统一的高阶DDA的三维平顶分区的初步研究

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Discontinuous Deformation Analysis (DDA) method is an implicit method aimed at simulatingrnlarge displacement and large deformation of a blocky system with discontinuities. Since the displacementrnfield is usually approximated by the first-order polynomial functions, it leads to a constant stress/strain fieldrnwithin a block. Therefore, in order to improve DDA’s accuracy in modelling the complex stress field, a flattoprnpartition of unity based mesh with a high-order local approximation is utilized in this paper. The basicrntheory and formula for the flat-top partition of unity based high-order DDA in three-dimensional space arernpresented. Then, according to the corresponding code developed, a validation example is presented to verifyrnthis proposed method.
机译：不连续变形分析（DDA）方法是一种隐式方法，旨在模拟具有不连续性的块状系统的大位移和大变形。由于位移场通常由一阶多项式函数近似，因此在一个块内导致恒定的应力/应变场。因此，为了提高DDA对复杂应力场进行建模的准确性，本文采用了具有高阶局部近似的基于单位的网格的平顶分区。提出了三维空间中基于单位的高阶DDA的平顶分区的基本理论和公式。然后，根据开发的相应代码，给出一个验证示例，以验证该建议方法。

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