Dynamic characteristics of sphere impact into wet granular materials considering suction

IF 2.3 3区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Granular Matter Pub Date : 2023-02-13 DOI:10.1007/s10035-022-01304-9

Xingli Zhang, Dashuai Zhang, Yifan Wang, Shunying Ji, Honghua Zhao

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引用次数: 1

Abstract

Understanding the impact and penetration characteristics of non-homogeneous granular material systems is of great significance for various research work. In this study, a series of experiments are conducted to investigate the impact and penetration processes of sand and glass beads, two granular materials with different moisture contents. The ultra-high-speed camera is used to capture the dynamic response of the projectile, while the impact force during impact and penetration is recorded by miniature load cells arranged underneath the container. The results show that the dynamic response of the projectile differs significantly for different types of granular materials with different moisture contents. The comparison between wet and dry granular materials reveals that the terminal penetration depth and the duration of the collision are much less for wet granular materials than for dry ones, and the effect of moisture content on the terminal penetration depth of the projectile is discussed. Assuming that the presence of moisture has no effect on the inertial force term, a modified motion equation is proposed taking into account the suction of wet granular materials.

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考虑吸力的球体撞击湿颗粒物料的动态特性

了解非均质颗粒材料体系的冲击和侵彻特性对各种研究工作具有重要意义。本研究通过一系列实验研究了不同含水率的颗粒状材料砂和玻璃微珠的冲击和渗透过程。超高速摄像机用于捕捉弹丸的动态响应，而设置在容器下方的微型测力元件则记录弹丸在撞击和侵彻过程中的冲击力。结果表明，不同类型、不同含水率的颗粒材料对弹丸的动力响应有显著差异。通过对湿、干颗粒材料的对比分析，发现湿颗粒材料的末端侵彻深度和碰撞持续时间远小于干颗粒材料，并讨论了含水率对弹丸末端侵彻深度的影响。假设水分的存在对惯性力项没有影响，提出了考虑湿颗粒物料吸力的修正运动方程。

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来源期刊

Granular Matter Materials Science-General Materials Science

CiteScore

4.60

自引率

8.30%

发文量

审稿时长

6 months

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.