Abstract Description of particle breakage embedded in a simulation using the discrete element method (DEM) qualifies it to describe processes in which breakage is either desired or undesired. DEM codes evolved significantly in recent years, many of which describing breakage. In spite of their limitations representing real particles, spheres have several important advantages from the standpoint of computation efficiency, being the basis for several particle replacement schemes. However, one of its biggest disadvantages lies in the fact that size distributions that are generated are very jagged and unnatural. The work describes a stochastic approach to generate realistic size distributions from breakage of spheres. Families of fragment size distributions were obtained from testing various materials in a drop weight tester. The model also incorporates the description of the unresolved fines. Its application to individual particles demonstrates that the method captures properly the effect of stressing energy described in the analytical model.

中文翻译：

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一种模拟 DEM 破损的随机粒子替换策略

摘要 使用离散元方法 (DEM) 在模拟中嵌入的颗粒破损描述使其有资格描述需要或不需要破损的过程。近年来，DEM 代码发展显着，其中许多描述了破损。尽管在代表真实粒子方面存在局限性，但从计算效率的角度来看，球体具有几个重要的优势，是几种粒子替换方案的基础。然而，其最大的缺点之一在于生成的尺寸分布非常参差不齐且不自然。这项工作描述了一种从球体破裂中生成真实尺寸分布的随机方法。碎片大小分布族是通过在落锤重量测试仪中测试各种材料获得的。该模型还包含对未解决罚款的描述。它对单个粒子的应用表明，该方法正确地捕获了分析模型中描述的应力能量的影响。