Influence of Methocel cellulose ether additive on micro-scale friction, abrasion and energy dissipation of rough-heterogeneous particles

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

Granular Matter Pub Date : 2022-09-13 DOI:10.1007/s10035-022-01261-3

Jing Ren, Haiwen Li, Kostas Senetakis, Gao-Feng Zhao

{"title":"Influence of Methocel cellulose ether additive on micro-scale friction, abrasion and energy dissipation of rough-heterogeneous particles","authors":"Jing Ren, Haiwen Li, Kostas Senetakis, Gao-Feng Zhao","doi":"10.1007/s10035-022-01261-3","DOIUrl":null,"url":null,"abstract":"<div><p>Understanding and modeling the contact behavior of particles provides enhanced constitutive laws in discrete-based simulations as well as a strong linkage between micro- and macroscopic behavior of granular materials. In the present study, we studied the influence of a polymer-based additive composed of Methocel cellulose ether on the tribological response of rough particles with grain-scale experiments. We performed both monotonic and cyclic tests on pairs of particles subjected to repeated shearing so that to explore the additional influence of abrasion in relation to previous loading history. Each sample was tested at first in a dry state and consecutively was immersed into the polymer-based fluid. The test results indicated increased friction at the contacts of the particles when immersed in the polymer-based additive, suggesting promising applications of the Methocel cellulose ether in improving the stability of geo-systems. For the shearing tests in a dry state, abrasion influences were amplified at higher magnitudes of normal load, whereas the polymer additive acted as a fluid film (or thin coating) mitigating in this way the continuous abrasion due to repeated shearing. We incorporated the Mindlin and Deresiewicz (M–D) contact model in a modified form to analyze the tangential response of the particles. It was found that the power of the modified M–D model was directly correlated with the natural logarithm of the microslip displacement threshold, when this threshold was normalized with respect to the normal load. Based on the analysis of the closed loops from the cyclic tests, the energy dissipation was found to be reduced when the samples were immersed in the polymer fluid compared with the tests in a dry state. The test results from the present work offer some insights into the micromechanical-based analysis of particulate materials and the interactions of rough particles in the presence of polymeric fluids with potential applications in contact mechanics modeling using discrete-based tools. These results also contribute to unveiling the prevailing micromechanisms in order to understand (or interpret) bulk behavior, thus the database from the present work may provide helpful guidance in understanding granular material behavior and the interactions between particles with polymer-based additives.</p></div>","PeriodicalId":582,"journal":{"name":"Granular Matter","volume":"24 4","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10035-022-01261-3.pdf","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Granular Matter","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10035-022-01261-3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 1

Abstract

Understanding and modeling the contact behavior of particles provides enhanced constitutive laws in discrete-based simulations as well as a strong linkage between micro- and macroscopic behavior of granular materials. In the present study, we studied the influence of a polymer-based additive composed of Methocel cellulose ether on the tribological response of rough particles with grain-scale experiments. We performed both monotonic and cyclic tests on pairs of particles subjected to repeated shearing so that to explore the additional influence of abrasion in relation to previous loading history. Each sample was tested at first in a dry state and consecutively was immersed into the polymer-based fluid. The test results indicated increased friction at the contacts of the particles when immersed in the polymer-based additive, suggesting promising applications of the Methocel cellulose ether in improving the stability of geo-systems. For the shearing tests in a dry state, abrasion influences were amplified at higher magnitudes of normal load, whereas the polymer additive acted as a fluid film (or thin coating) mitigating in this way the continuous abrasion due to repeated shearing. We incorporated the Mindlin and Deresiewicz (M–D) contact model in a modified form to analyze the tangential response of the particles. It was found that the power of the modified M–D model was directly correlated with the natural logarithm of the microslip displacement threshold, when this threshold was normalized with respect to the normal load. Based on the analysis of the closed loops from the cyclic tests, the energy dissipation was found to be reduced when the samples were immersed in the polymer fluid compared with the tests in a dry state. The test results from the present work offer some insights into the micromechanical-based analysis of particulate materials and the interactions of rough particles in the presence of polymeric fluids with potential applications in contact mechanics modeling using discrete-based tools. These results also contribute to unveiling the prevailing micromechanisms in order to understand (or interpret) bulk behavior, thus the database from the present work may provide helpful guidance in understanding granular material behavior and the interactions between particles with polymer-based additives.

Abstract Image

查看原文本刊更多论文

甲氧赛尔纤维素醚添加剂对非均质粗颗粒微尺度摩擦磨损和能量耗散的影响

理解和模拟颗粒的接触行为为离散模拟提供了增强的本构定律，以及颗粒材料微观和宏观行为之间的紧密联系。在本研究中，我们通过粒度实验研究了由甲氧索纤维素醚组成的聚合物基添加剂对粗糙颗粒摩擦学响应的影响。我们对反复剪切的颗粒对进行了单调和循环试验，以探索与先前加载历史相关的磨损的额外影响。每个样品首先在干燥状态下进行测试，然后连续浸入聚合物基流体中。测试结果表明，当浸泡在聚合物基添加剂中时，颗粒接触处的摩擦力增加，这表明Methocel纤维素醚在提高地质系统稳定性方面有很好的应用前景。对于干燥状态下的剪切试验，在较高的正常载荷下，磨损影响被放大，而聚合物添加剂作为一种流体膜(或薄涂层)，以这种方式减轻了由反复剪切引起的连续磨损。我们采用修正形式的Mindlin和Deresiewicz (M-D)接触模型来分析颗粒的切向响应。研究发现，修正M-D模型的幂与微滑移位移阈值的自然对数直接相关，当该阈值相对于法向荷载进行归一化时。通过对循环试验闭合回路的分析，发现样品浸泡在聚合物流体中比干燥状态下的能量耗散减小。本工作的测试结果为颗粒材料的微力学分析和聚合物流体存在下粗糙颗粒的相互作用提供了一些见解，并具有使用离散工具进行接触力学建模的潜在应用。这些结果也有助于揭示主流的微观机制，以理解(或解释)体积行为，因此，本工作的数据库可能为理解颗粒材料行为以及颗粒与聚合物基添加剂之间的相互作用提供有益的指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.