修正弹簧-斜盘-滑块模型

IF 2.4 3区工程技术

Granular Matter Pub Date : 2024-04-10 DOI:10.1007/s10035-024-01424-4

Florian Führer, Lothar Brendel, Dietrich E. Wolf

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引用次数: 0

摘要

在离散元法模拟颗粒物质时，弹簧-水盆-滑块是包含固体摩擦的常用方法。然而，目前最常用的模型存在一些问题，包括能量的自发产生。造成这些问题的主要原因是弹簧位移的不连续演化。在本文中，我们推导出了一个位移微分方程，它能产生连续的时间演化，解决了非连续模型的问题，而且更易于实现。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Correction of the spring-dashpot-slider model

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Correction of the spring-dashpot-slider model

The spring-dashpot-slider is a common way to include solid friction for discrete element method simulations of granular matter. However, the most popular model that is currently in use has a number of problems, including the spontaneous creation of energy. The main cause for these problems is the discontinuous evolution of the spring displacement. In this paper, we derive a differential equation for the displacement that yields a continuous time evolution, that fixes the problems of the discontinuous model and is simpler to implement.

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来源期刊

Granular Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-MECHANICS

CiteScore

4.30

自引率

8.30%

发文量

期刊介绍： Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science. These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations. >> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa. The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.