A numerical homogenization study of the elastic property of a soil-rock mixture using random mesostructure generation. (June 2018)

• Record Type: Journal Article
• Authors: Meng, Q.X.; Wang, H.L.; Xu, W.Y.; Cai, M.
• Is Part Of: Computers and geotechnics. Volume 98(2018)
• Page Start: 48
• Page End: 57
• Publication Date: 2018-06
• Subjects: Numerical homogenization -- Soil-rock mixture -- Mesostructure -- Macroscopic elastic parameter; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2018.01.015
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: A random generation method of periodic mesostructures of soil-rock mixtures based on random polygon is proposed and used in the generation of an RVE model. A code for generating a periodic mesh and periodic boundary is developed for the numerical simulation. Macroscopic elastic parameters of the SRMs are calculated based on the simulation using numerical homogenization. The elastic modulus shows a size effect, namely, the modulus deceases gradually with an increase in the model size. The border effect is related to the model size and is large in small-sized models. Rock aggregates arranged in a certain direction induce property anisotropy.