class="kwd-title">Keywords: Voronoi volume, Computational efficiency, Discrete element method, Granular materials, Confined compression class="head no_bottom_margin" id="idm139828132712896title">AbstractWhen the discrete element method (DEM) is used to simulate confined compression of granular materials, the need arises to estimate the void space surrounding each particle with Voronoi polyhedra. This entails recurring Voronoi tessellation with small changes in the geometry, resulting in a considerable computational overhead. To overcome this limitation, we propose a method with the following features: class="first-line-outdent">
• A local determination of the polyhedron volume is used, which considerably simplifies implementation of the method.
• A linear approximation of the polyhedron volume is utilised, with intermittent exact volume calculations when needed.
• The method allows highly accurate volume estimates to be obtained at a considerably reduced computational cost.
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机译：<！-fig ft0-> <！-fig @ position =“ anchor” mode =文章f4-> <！-fig mode =“ anchred” f5-> <！-fig / graphic | fig / alternatives / graphic mode =“ anchored” m1-> class =“ kwd-title”>关键字： Voronoi体积，计算效率，离散元方法，颗粒材料，局限压缩 class =“ head no_bottom_margin“ id =” idm139828132712896title“>摘要当使用离散元方法（DEM）模拟颗粒材料的有限压缩时，就需要用Voronoi多面体来估计每个粒子周围的空隙空间。这需要对Voronoi进行镶嵌细分，并在几何形状中进行较小的更改，从而导致相当大的计算开销。为克服此限制，我们提出了一种具有以下功能的方法： class =“ first-line-outdent”> <！-list-behavior =简单的前缀-word = mark-type = none max-label-size = 9->
