Numerical analysis of slopes treated by nano-materials

IF 1.7 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of the Mechanical Behavior of Materials Pub Date : 2023-01-01 DOI:10.1515/jmbm-2022-0227

B. Shwan

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引用次数: 2

Abstract

Abstract Improvements in mechanical characteristics of soils treated by nano-materials (NMs) have been proved in the last three decades. The improvements are mainly attributed to changes in the soil fabric where a noticeable rise in shear strength has been obtained. This work, therefore, addressed a numerical study on the influence of the soil fabric changes due to the NMs enhancement on a slope stability problem using an upper bound discretization scheme. A parametric study was carried out at seven different inclination angles from 15 to 45° and with a variety of combinations of angle of shearing resistance (ϕ) and cohesion (c) values. This was carried out for two different types of slopes on purely frictional materials and c–ϕ materials. A noticeable increase in stability was obtained, based on a set of re-generated design charts, due to NMs enhancement (attributed to soil fabric changes). The re-generated design charts did not require iterative procedures and extended both x and y boundaries when compared with other available charts in the literature. Examination of the influence of the NM on the failure modes, to provide an insight into different failure mechanisms due to the soil fabric changes, was also considered.

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纳米材料处理边坡的数值分析

摘要在过去的三十年里，纳米材料处理的土壤的力学特性得到了改善。这些改善主要归因于土壤结构的变化，剪切强度显著提高。因此，本工作使用上限离散化方案对NMs增强引起的土壤组构变化对边坡稳定性问题的影响进行了数值研究。在15°至45°的七个不同倾角下进行了参数研究，并采用了抗剪角度（ξ）和内聚力（c）值的各种组合。这是在纯摩擦材料和c–ξ材料上对两种不同类型的斜坡进行的。根据一组重新生成的设计图，由于NMs的增强（归因于土壤组构的变化），稳定性显著提高。与文献中的其他可用图表相比，重新生成的设计图表不需要迭代程序，并且扩展了x和y边界。还考虑了NM对失效模式的影响，以深入了解由于土壤组构变化引起的不同失效机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Mechanical Behavior of Materials Materials Science-Materials Science (miscellaneous)

CiteScore

3.00

自引率

11.10%

发文量

审稿时长

30 weeks

期刊介绍： The journal focuses on the micromechanics and nanomechanics of materials, the relationship between structure and mechanical properties, material instabilities and fracture, as well as size effects and length/time scale transitions. Articles on cutting edge theory, simulations and experiments – used as tools for revealing novel material properties and designing new devices for structural, thermo-chemo-mechanical, and opto-electro-mechanical applications – are encouraged. Synthesis/processing and related traditional mechanics/materials science themes are not within the scope of JMBM. The Editorial Board also organizes topical issues on emerging areas by invitation. Topics Metals and Alloys Ceramics and Glasses Soils and Geomaterials Concrete and Cementitious Materials Polymers and Composites Wood and Paper Elastomers and Biomaterials Liquid Crystals and Suspensions Electromagnetic and Optoelectronic Materials High-energy Density Storage Materials Monument Restoration and Cultural Heritage Preservation Materials Nanomaterials Complex and Emerging Materials.