A Damage Constitutive Model for Rock Considering Crack Propagation Under Uniaxial Compression
Rattachement africain : cn. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
This study aims to accurately characterize the nonlinear stress–strain evolution of rocks under uniaxial compression considering crack propagation. First, the rock meso-structure was generalized into intact rock unit cells, crack propagation damage unit cells, and pore unit cells according to phenomenological theory. A mesoscopic rock stress model considering crack propagation was established based on the static equilibrium relationship of the unit cells, and the effective stress of the crack propagation damage unit cells was solved based on fracture mechanics. Then, the geometric damage theory and conservation-of-energy principle were introduced to construct the damage evolution equation for rock crack propagation. On this basis, the effective stress of the damage unit cells and the crack propagation damage equation were incorporated into the rock meso-structure static equilibrium equation, and the effect of nonlinear deformation in the soft rock compaction stage was considered to establish a rock damage constitutive model based on mesoscopic crack propagation evolution. Finally, methods for determining model parameters were proposed, and the effects of the model parameters on rock stress–strain curves were explored. The results showed that the theoretical model calculations agreed well with the experimental results, thus verifying the rationality of the damage constitutive model and the clear physical meaning of the model parameters.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- A Damage Constitutive Model for Rock Considering Crack Propagation Under Uniaxial Compression
- Date Crossref
- 01/10/2025
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Changsha University Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education pays non établi dans la noticeUniversité ou école supérieure
-
Hunan Institute of Engineering pays non établi dans la noticeUniversité ou école supérieure
-
Changsha University of Science and Technology pays non établi dans la noticeUniversité ou école supérieure
-
Hunan Provincial Engineering Research Center for Disaster and Reinforcement of Disease Risk Engineering Structures pays non établi dans la noticeStructure de recherche
-
School of Smart Construction and Energy Engineering pays non établi dans la noticeUniversité ou école supérieure
-
School of Transportation Engineering pays non établi dans la noticeUniversité ou école supérieure
Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education — Changsha University, Hunan Institute of Engineering et Changsha University of Science and Technology, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.