A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Damage modeling for cemented particulate materials
Crack damage due to load is commonly observed in bonded particulate materials such as concrete, cemented sand, and ceramic materials. Previous analytical models for these types of materials have been developed based on continuum mechanics using a phenomenological approach. However, theories of continuum mechanics have limitations when used for analyzing localized damages at a micro-scale level. Therefore, a microstructural approach is desirable for the analysis of these types of materials. In this paper, a contact law is derived for the inter-particle behavior of two particles connected by a cement binder. The binder initially contains small-size cracks which propagate and grow under external loading. As a result the binder is weakened with lower strength in shear and tension. Theory of fracture mechanics is employed to model the propagation and growth of these micro-cracks. The contact law is then incorporated in the analysis for the overall damage behavior of material using a statistical micromechanics approach. The results show that the analytical model is capable of modeling the behavior of a bonded particulate material in tension.
Damage modeling for cemented particulate materials
Crack damage due to load is commonly observed in bonded particulate materials such as concrete, cemented sand, and ceramic materials. Previous analytical models for these types of materials have been developed based on continuum mechanics using a phenomenological approach. However, theories of continuum mechanics have limitations when used for analyzing localized damages at a micro-scale level. Therefore, a microstructural approach is desirable for the analysis of these types of materials. In this paper, a contact law is derived for the inter-particle behavior of two particles connected by a cement binder. The binder initially contains small-size cracks which propagate and grow under external loading. As a result the binder is weakened with lower strength in shear and tension. Theory of fracture mechanics is employed to model the propagation and growth of these micro-cracks. The contact law is then incorporated in the analysis for the overall damage behavior of material using a statistical micromechanics approach. The results show that the analytical model is capable of modeling the behavior of a bonded particulate material in tension.
Damage modeling for cemented particulate materials
Chang, Ching S. (author) / Zhong, X. (author)
1997
12 Seiten, 19 Quellen
Conference paper
English
Modeling Fracture in Cemented Granular Materials
| British Library Conference Proceedings | 1994
A particulate-scale investigation of cemented sand behavior
| Online Contents | 2008
A particulate-scale investigation of cemented sand behavior
| British Library Online Contents | 2008
A damage hypoplasticity constitutive model for cemented sand and gravel materials
| Springer Verlag | 2022