(Seminar)Test on Edwards volume ensemble of tapped granular packings
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CAS Key Laboratory of Theoretical Physics | ||
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Institute of Theoretical Physics | ||
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Chinese Academy of Sciences | ||
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Seminar | ||
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Title 题目 |
Test on Edwards volume ensemble of tapped granular packings | |
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Speaker 报告人 |
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Affiliation 所在单位 |
上海交通大学 | |
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Date 日期 |
4月2日16:00 | |
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Venue 地点 |
腾讯会议 987 878 963 | |
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Contact Person 所内联系人 |
Yuliang Jin | |
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Abstract 摘要 |
Edwards ensemble is the only statistical mechanical framework conjectured to understand macroscopic behaviors of non-equilibrium granular materials. However, its direct experimental validation in three dimensions is lacking, especially when particles possess different friction coefficients. Here we analyse tapping generated 3D granular packings using X-ray tomography. We validate Edwards volume ensemble as well as establish a granular version of thermodynamic zeroth law. We clarify the influence of friction on granular statistical mechanics as modifying the density of states. Our work is crucial for future development of a constitutive law of granular materials based on a statistical mechanical framework. | |