砂砾地质数值试验中细观数值参数研究

IF 1.1 Q3 ENGINEERING, CIVIL
Xuansheng Cheng, Huadong Liu, Haibo Liu, Yuyue Bu, Hong-yan Su, Chaobo Chen
{"title":"砂砾地质数值试验中细观数值参数研究","authors":"Xuansheng Cheng, Huadong Liu, Haibo Liu, Yuyue Bu, Hong-yan Su, Chaobo Chen","doi":"10.1680/jencm.22.00007","DOIUrl":null,"url":null,"abstract":"To study the influence of the meso-mechanical parameters of sand-pebble on the macro-mechanical properties, the numerical simulation method of discrete element method and the sand-pebble numerical triaxial test are used, a test method for elliptical particles is proposed, and the sensitivity analysis of the meso-mechanical parameters of sand-pebble is performed. The results show that the effective modulus of the particles has a significant effect on the macroscopic elastic modulus of the material, and the increase in the macroscopic elastic modulus of the material has an approximately linear relationship with the increase in the effective modulus. The effect of the particle stiffness ratio on the macro-mechanical properties of the material is insignificant. The increase in the friction coefficient is roughly linearly related to the increase in the peak stress. The increase in the interparticle porosity has a negative correlation with the decrease in the peak stress, and the particle diameter ratio affects both the number of particles produced and the peak stress. This paper provides a reference for the theoretical basis for subsequent research on the physical and mechanical characteristics of sand-pebble geology.","PeriodicalId":54061,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering and Computational Mechanics","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2022-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on mesoscopic numerical parameters in numerical tests of sand-pebble geology\",\"authors\":\"Xuansheng Cheng, Huadong Liu, Haibo Liu, Yuyue Bu, Hong-yan Su, Chaobo Chen\",\"doi\":\"10.1680/jencm.22.00007\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"To study the influence of the meso-mechanical parameters of sand-pebble on the macro-mechanical properties, the numerical simulation method of discrete element method and the sand-pebble numerical triaxial test are used, a test method for elliptical particles is proposed, and the sensitivity analysis of the meso-mechanical parameters of sand-pebble is performed. The results show that the effective modulus of the particles has a significant effect on the macroscopic elastic modulus of the material, and the increase in the macroscopic elastic modulus of the material has an approximately linear relationship with the increase in the effective modulus. The effect of the particle stiffness ratio on the macro-mechanical properties of the material is insignificant. The increase in the friction coefficient is roughly linearly related to the increase in the peak stress. The increase in the interparticle porosity has a negative correlation with the decrease in the peak stress, and the particle diameter ratio affects both the number of particles produced and the peak stress. This paper provides a reference for the theoretical basis for subsequent research on the physical and mechanical characteristics of sand-pebble geology.\",\"PeriodicalId\":54061,\"journal\":{\"name\":\"Proceedings of the Institution of Civil Engineers-Engineering and Computational Mechanics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2022-08-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the Institution of Civil Engineers-Engineering and Computational Mechanics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1680/jencm.22.00007\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Civil Engineers-Engineering and Computational Mechanics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1680/jencm.22.00007","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0

摘要

为研究砂砾细观力学参数对其宏观力学性能的影响,采用离散元法数值模拟方法和砂砾数值三轴试验,提出了一种椭圆颗粒的试验方法,并对砂砾细观力学参数进行了敏感性分析。结果表明:颗粒的有效模量对材料的宏观弹性模量有显著影响,材料宏观弹性模量的增加与有效模量的增加近似成线性关系。颗粒刚度比对材料宏观力学性能的影响不显著。摩擦系数的增加与峰值应力的增加大致成线性关系。颗粒间孔隙度的增大与峰值应力的减小呈负相关,颗粒直径比对颗粒数和峰值应力均有影响。本文为后续砂砾地质物理力学特征研究提供了理论基础参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on mesoscopic numerical parameters in numerical tests of sand-pebble geology
To study the influence of the meso-mechanical parameters of sand-pebble on the macro-mechanical properties, the numerical simulation method of discrete element method and the sand-pebble numerical triaxial test are used, a test method for elliptical particles is proposed, and the sensitivity analysis of the meso-mechanical parameters of sand-pebble is performed. The results show that the effective modulus of the particles has a significant effect on the macroscopic elastic modulus of the material, and the increase in the macroscopic elastic modulus of the material has an approximately linear relationship with the increase in the effective modulus. The effect of the particle stiffness ratio on the macro-mechanical properties of the material is insignificant. The increase in the friction coefficient is roughly linearly related to the increase in the peak stress. The increase in the interparticle porosity has a negative correlation with the decrease in the peak stress, and the particle diameter ratio affects both the number of particles produced and the peak stress. This paper provides a reference for the theoretical basis for subsequent research on the physical and mechanical characteristics of sand-pebble geology.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
2.60
自引率
0.00%
发文量
8
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信