NUMERICAL MODELING OF MACRO-SCALE BRITTLE ROCK CRUSHING DURING IMPACTS
نویسندگان
چکیده
منابع مشابه
Aggregate production: Fines generation during rock crushing
The energy required to crush rocks is proportional to the amount of new surface area that is created; hence, a very important percentage of the energy consumed to produce construction aggregates is spent in producing non-commercial fines. Data gathered during visits to quarries, an extensive survey and laboratory experiments are used to explore the role of mineralogy and fracture mode in fines ...
متن کاملNumerical Modeling of the Ductile-Brittle Transition
Numerical studies of the ductile-brittle transition are described that are based on incorporating physically based models of the competing fracture mechanisms into the material's constitutive relation. An elastic-viscoplastic constitutive relation for a porous plastic solid is used to model ductile fracture by the nucleation and subsequent growth of voids to coalescence. Cleavage is modeled in ...
متن کاملTwo-scale damage modeling of brittle composites
This paper is aimed at developing a non-local theory for obtaining a numerical approximation to a boundary-value problem describing damage phenomena in a ceramic composite material. The mathematical homogenization method based on double-scale asymptotic expansion is generalized to account for damage effects in heterogeneous media. A closed-form expression relating local fields to the overall st...
متن کاملConstitutive and numerical modeling of anisotropic quasi-brittle shales
.......................................................................................................................................... I RIASSUNTO....................................................................................................................................... III ACKNOWLEDGEMENTS .............................................................................................
متن کاملNumerical Study on Crack Propagation in Brittle Jointed Rock Mass Influenced by Fracture Water Pressure
The initiation, propagation, coalescence and failure mode of brittle jointed rock mass influenced by fissure water pressure have always been studied as a hot issue in the society of rock mechanics and engineering. In order to analyze the damage evolution process of jointed rock mass under fracture water pressure, a novel numerical model on the basis of secondary development in fast Lagrangian a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: JES. Journal of Engineering Sciences
سال: 2012
ISSN: 2356-8550
DOI: 10.21608/jesaun.2012.114619