{"title":"振动辅助对摩擦界面间致密颗粒流力链特性的影响","authors":"Qigao Feng, Guiling Hu, Zichen Gan, Lijie Ma, Minghua Pang, Yaxin Liu, Leyang Li","doi":"10.1007/s10035-025-01554-3","DOIUrl":null,"url":null,"abstract":"<div><p>In order to elucidate the lubrication mechanism of dense granular flows under vibrational conditions, the force chain characteristics of dense particulate systems were systematically investigated. A parallel inter-plate model for dense granular flow lubrication was established using the discrete element method (DEM). Subsequently, the effects of vibration frequency and amplitude on the dynamic fluctuation, load-bearing capacity, distribution, and overall directionality of force chains were analyzed in detail. When the frequency is below mid-frequency (10,000 Hz), the dynamic fluctuations of force chains in the same-phase direction are weaker, and the overall fluctuation properties of the force chains tend to stabilize. The distribution and load-bearing capacities of weak force chains increase, and the directionality of the total force chain gradually aligns with the x-axis. Conversely, when the frequency exceeds 10,000 Hz, stronger fluctuations of force chains occur in both phases, leading to more intense overall fluctuations. Simultaneously, the distribution and load-bearing capacities of weak force chains decrease, and the directionality of the total force chain shifts gradually from the x-axis to the y-axis. As the vibration frequency and amplitude increase, the distribution and load-bearing capacities of weak force chains reach their maximum values more rapidly under mid-frequency conditions. Additionally, the average and fluctuating velocities increase continuously at low frequencies, peak at mid-frequencies, and then decrease at high frequencies. The primary contribution of this study is to establish a theoretical foundation for the lubrication mechanism of granular flows under vibrational influences.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":49323,"journal":{"name":"Granular Matter","volume":"27 3","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of vibration assistance on the force chain properties of dense granular flow between friction interfaces\",\"authors\":\"Qigao Feng, Guiling Hu, Zichen Gan, Lijie Ma, Minghua Pang, Yaxin Liu, Leyang Li\",\"doi\":\"10.1007/s10035-025-01554-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In order to elucidate the lubrication mechanism of dense granular flows under vibrational conditions, the force chain characteristics of dense particulate systems were systematically investigated. A parallel inter-plate model for dense granular flow lubrication was established using the discrete element method (DEM). Subsequently, the effects of vibration frequency and amplitude on the dynamic fluctuation, load-bearing capacity, distribution, and overall directionality of force chains were analyzed in detail. When the frequency is below mid-frequency (10,000 Hz), the dynamic fluctuations of force chains in the same-phase direction are weaker, and the overall fluctuation properties of the force chains tend to stabilize. The distribution and load-bearing capacities of weak force chains increase, and the directionality of the total force chain gradually aligns with the x-axis. Conversely, when the frequency exceeds 10,000 Hz, stronger fluctuations of force chains occur in both phases, leading to more intense overall fluctuations. Simultaneously, the distribution and load-bearing capacities of weak force chains decrease, and the directionality of the total force chain shifts gradually from the x-axis to the y-axis. As the vibration frequency and amplitude increase, the distribution and load-bearing capacities of weak force chains reach their maximum values more rapidly under mid-frequency conditions. Additionally, the average and fluctuating velocities increase continuously at low frequencies, peak at mid-frequencies, and then decrease at high frequencies. The primary contribution of this study is to establish a theoretical foundation for the lubrication mechanism of granular flows under vibrational influences.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":49323,\"journal\":{\"name\":\"Granular Matter\",\"volume\":\"27 3\",\"pages\":\"\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2025-06-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Granular Matter\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10035-025-01554-3\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Granular Matter","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10035-025-01554-3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Effect of vibration assistance on the force chain properties of dense granular flow between friction interfaces
In order to elucidate the lubrication mechanism of dense granular flows under vibrational conditions, the force chain characteristics of dense particulate systems were systematically investigated. A parallel inter-plate model for dense granular flow lubrication was established using the discrete element method (DEM). Subsequently, the effects of vibration frequency and amplitude on the dynamic fluctuation, load-bearing capacity, distribution, and overall directionality of force chains were analyzed in detail. When the frequency is below mid-frequency (10,000 Hz), the dynamic fluctuations of force chains in the same-phase direction are weaker, and the overall fluctuation properties of the force chains tend to stabilize. The distribution and load-bearing capacities of weak force chains increase, and the directionality of the total force chain gradually aligns with the x-axis. Conversely, when the frequency exceeds 10,000 Hz, stronger fluctuations of force chains occur in both phases, leading to more intense overall fluctuations. Simultaneously, the distribution and load-bearing capacities of weak force chains decrease, and the directionality of the total force chain shifts gradually from the x-axis to the y-axis. As the vibration frequency and amplitude increase, the distribution and load-bearing capacities of weak force chains reach their maximum values more rapidly under mid-frequency conditions. Additionally, the average and fluctuating velocities increase continuously at low frequencies, peak at mid-frequencies, and then decrease at high frequencies. The primary contribution of this study is to establish a theoretical foundation for the lubrication mechanism of granular flows under vibrational influences.
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.
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