Challenges and opportunities in measuring time-resolved force chain evolution in 3D granular materials
Challenges and opportunities in measuring time-resolved force chain evolution in 3D granular materials
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DOI：
10.4279/pip.140003
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发表时间：
2022-01-01
影响因子：
0.9
通讯作者：
Zhai, Chongpu
中科院分区：
文献类型：
--
作者：
Hurley, Ryan C.;Zhai, Chongpu
颗粒状物质在自然界和工业中随处可见：在山体滑坡、雪崩和河床中，也在制药、食品和矿物加工中。这些材料的许多行为，包括它们的包装、变形、流动和传递能量的方式，只有在粒子间力的背景下才能完全理解。然而，由于技术限制，我们缺乏在亚秒时间尺度上测量三维粒子间力演化的技术。在亚秒时间尺度上测量三维力链演化将有助于验证和扩展那些在预测中明确或隐含地考虑力链动力学的理论和模型。在这里，我们讨论与这些时间尺度上的力链演变相关的开放挑战，限制此类测量的挑战，以及未来十年克服这些挑战的可能途径。
Granular materials are found throughout nature and industry: in landslides, avalanches, and river beds, and also in pharmaceutics, food, and mineral processing. Many behaviors of these materials, including the ways in which they pack, deform, flow, and transmit energy, can be fully understood only in the context of inter-particle forces. However, we lack techniques for measuring 3D inter-particle force evolution at subsecond timescales due to technological limitations. Measurements of 3D force chain evolution at subsecond timescales would help validate and extend theories and models that explicitly or implicitly consider force chain dynamics in their predictions. Here, we discuss open challenges associated with force chain evolution on these timescales, challenges limiting such measurements, and possible routes for overcoming these challenges in the coming decade.