A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modelling of granular materials at crushing-dominant stage
Granular crushing significantly changes mechanical behaviours, especially under elevated stress levels. Therefore, this study aims to develop a model to simulate the constitutive behaviours of granular materials at the crushing-dominant stage. Firstly, the contour of elastic potential energy is demonstrated and employed to derive the yield surface or function, acknowledging that the stored elastic energy dominates the breakage yield criterion. The versatility of the proposed yield function in accurately capturing the features of yield surfaces is verified with three cases, including Cam-clay models, test results, and an empirical yield function. Next, a hardening parameter, H, is formulated, considering the extent of crushing, B, and the void ratio, e, to reflect the expansion of the yield surface during hardening. The proposed simple hardening formulation favourably represents compression characteristics under elevated stress levels. Combining the above results of yield and hardening functions, a new elastic–plastic-crushing constitutive model is developed; the model’s capability to describe crushable granular material behaviours is validated against experimental counterparts.
Modelling of granular materials at crushing-dominant stage
Granular crushing significantly changes mechanical behaviours, especially under elevated stress levels. Therefore, this study aims to develop a model to simulate the constitutive behaviours of granular materials at the crushing-dominant stage. Firstly, the contour of elastic potential energy is demonstrated and employed to derive the yield surface or function, acknowledging that the stored elastic energy dominates the breakage yield criterion. The versatility of the proposed yield function in accurately capturing the features of yield surfaces is verified with three cases, including Cam-clay models, test results, and an empirical yield function. Next, a hardening parameter, H, is formulated, considering the extent of crushing, B, and the void ratio, e, to reflect the expansion of the yield surface during hardening. The proposed simple hardening formulation favourably represents compression characteristics under elevated stress levels. Combining the above results of yield and hardening functions, a new elastic–plastic-crushing constitutive model is developed; the model’s capability to describe crushable granular material behaviours is validated against experimental counterparts.
Modelling of granular materials at crushing-dominant stage
Acta Geotech.
Tang, Yaolan (author) / Zhang, Chunshun (author) / Li, Congying (author) / Zhou, Weiru (author) / Qian, Junfeng (author) / Zhao, Jian (author)
Acta Geotechnica ; 19 ; 6535-6551
2024-10-01
17 pages
Article (Journal)
Electronic Resource
English
Constitutive relations , Crushable granular materials , Crushing-dominant stage , Yield criterion Engineering , Geoengineering, Foundations, Hydraulics , Solid Mechanics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics
Modelling of granular materials at crushing-dominant stage
| Springer Verlag | 2024
Crushing behaviour of granular materials
| British Library Conference Proceedings | 2001
Significance of Particle Crushing in Granular Materials
| Online Contents | 1997
Significance of Particle Crushing in Granular Materials
| British Library Online Contents | 1996
Significance of Particle Crushing in Granular Materials
| Online Contents | 1996