{"title":"Micromechanical and energetic investigation of shear behavior of sand-rubber mixtures: Effect of rubber content and normal pressure","authors":"Zheng Hu , Qi Liu , Beibing Dai","doi":"10.1016/j.compgeo.2025.107221","DOIUrl":null,"url":null,"abstract":"<div><div>This paper presents a numerical investigation into the effect of rubber content and stress level on the mechanical behavior and energy transformation of sand-rubber mixtures (SRMs) under simple shear condition using a multibody meshfree method. The results reveal that the presence of rubber particles reduces interparticle contact forces, inhibits the formation of strong force chains, and promotes a more uniform force network. The input work is predominantly transformed into strain energy, damping energy, and slipping energy, with the transformation mode heavily dependent on the rubber content and normal stress, which govern the compressibility of SRMs in relation to rubber particles' deformability and the frictional dissipation capacity associated with interparticle friction conditions. The incorporation of rubber particles also enhances the strain energy storage capacity, which is attributed to the restricted particle slipping and rolling behaviors, as well as the diminished particle surface asperity due to rubber particle deformations. These findings provide insights into the macro- and micro-mechanical behavior of SRMs, bridging the gap between the energy transformation and the mechanical response of SRMs, and contributing to the development of more efficient and sustainable geomaterials.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"183 ","pages":"Article 107221"},"PeriodicalIF":5.3000,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computers and Geotechnics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0266352X25001703","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a numerical investigation into the effect of rubber content and stress level on the mechanical behavior and energy transformation of sand-rubber mixtures (SRMs) under simple shear condition using a multibody meshfree method. The results reveal that the presence of rubber particles reduces interparticle contact forces, inhibits the formation of strong force chains, and promotes a more uniform force network. The input work is predominantly transformed into strain energy, damping energy, and slipping energy, with the transformation mode heavily dependent on the rubber content and normal stress, which govern the compressibility of SRMs in relation to rubber particles' deformability and the frictional dissipation capacity associated with interparticle friction conditions. The incorporation of rubber particles also enhances the strain energy storage capacity, which is attributed to the restricted particle slipping and rolling behaviors, as well as the diminished particle surface asperity due to rubber particle deformations. These findings provide insights into the macro- and micro-mechanical behavior of SRMs, bridging the gap between the energy transformation and the mechanical response of SRMs, and contributing to the development of more efficient and sustainable geomaterials.
期刊介绍:
The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.