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Compression Model of Crushable Granular Materials Considering Particle Size Effect
Hydrostatic and one-dimensional compression behavior of granular material are closely related to particle breakage. Tangent constrained modulus may decrease with loading because of the significant crushing of particles. However few compression models could represent this behavior. The traditional semilog linear compression model only shows increasing modulus. In this article, an elasto-plastic compression model is proposed. The plastic strain is divided into plastic hardening strain and plastic breakage strain, the former is due to particle packing, interparticle slip, and rotation, while the latter is due to breakage of asperities and whole-particle fracture. Plastic breakage strain is linked with particle characteristic strength following a power-law particle size effect. The model is verified by experimental results from the literature.
Compression Model of Crushable Granular Materials Considering Particle Size Effect
Hydrostatic and one-dimensional compression behavior of granular material are closely related to particle breakage. Tangent constrained modulus may decrease with loading because of the significant crushing of particles. However few compression models could represent this behavior. The traditional semilog linear compression model only shows increasing modulus. In this article, an elasto-plastic compression model is proposed. The plastic strain is divided into plastic hardening strain and plastic breakage strain, the former is due to particle packing, interparticle slip, and rotation, while the latter is due to breakage of asperities and whole-particle fracture. Plastic breakage strain is linked with particle characteristic strength following a power-law particle size effect. The model is verified by experimental results from the literature.
Compression Model of Crushable Granular Materials Considering Particle Size Effect
Lecture Notes in Civil Engineering
Barla, Marco (Herausgeber:in) / Di Donna, Alice (Herausgeber:in) / Sterpi, Donatella (Herausgeber:in) / Zheng, Tianliang (Autor:in) / Song, Erxiang (Autor:in)
International Conference of the International Association for Computer Methods and Advances in Geomechanics ; 2021 ; Turin, Italy
15.01.2021
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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