Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Vibration propagation in discrete element particle models of rock
Vibrations in rockmasses can be a significant hazard, leading to human discomfort and structural damage. Recent cases of subway or tunnel excavation near existing dams in Portugal have raised again the importance of this topic. Traditional statistical tools have been used to study wave propagation in rock, but fall short when rock fracturing or faulting radically changes the way vibration propagates. Numerical models such as finite-element or finite-difference models also have some insufficiencies, namely in the way discontinuities are represented.We propose the utilization of bonded particlemodels based on the ParticleDiscrete ElementMethod. Synthetic rock samples are generated and their static elastic properties are calibrated by manipulating micro- properties (assembly organization and normal and shear contact stiffness). The static and dynamic properties of the rock cores are tested and the complete elastic response of the model is evaluated and discussed. ; 871-876pp. ; DT/NIT
Vibration propagation in discrete element particle models of rock
Vibrations in rockmasses can be a significant hazard, leading to human discomfort and structural damage. Recent cases of subway or tunnel excavation near existing dams in Portugal have raised again the importance of this topic. Traditional statistical tools have been used to study wave propagation in rock, but fall short when rock fracturing or faulting radically changes the way vibration propagates. Numerical models such as finite-element or finite-difference models also have some insufficiencies, namely in the way discontinuities are represented.We propose the utilization of bonded particlemodels based on the ParticleDiscrete ElementMethod. Synthetic rock samples are generated and their static elastic properties are calibrated by manipulating micro- properties (assembly organization and normal and shear contact stiffness). The static and dynamic properties of the rock cores are tested and the complete elastic response of the model is evaluated and discussed. ; 871-876pp. ; DT/NIT
Vibration propagation in discrete element particle models of rock
Resende, R. (Autor:in) / Fortunato, E. (Autor:in) / Andrade, C. (Autor:in) / Miranda, T. (Autor:in) / Alejano / Perucho / Olalla / Jiménez / NAO
01.01.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
DDC:
621
Discrete element models for granular materials and rock masses
| TIBKAT | 1990
Analysis of Rock Damage Characteristics Based on Particle Discrete Element Model
| Springer Verlag | 2017
Analysis of Rock Damage Characteristics Based on Particle Discrete Element Model
| Online Contents | 2017
Analysis of Rock Damage Characteristics Based on Particle Discrete Element Model
| Online Contents | 2017