Abstract
The earthquake faulting process can be modelled as propagating two or three dimensional shear cracks. Since analytical methods cannot be used to study finite cracks, several numerical approaches to this problem have been taken, of which the numerical boundary integral method is here described in detail. The process of crack growth can be determined by the use of a fracture criterion. Since the material properties such as fracture strength and frictional properties vary over the surfaces of real faults, two types of complex faulting models-the “barrier” model and the “asperity” model-are discussed in the context of seismology.
Résumé
Un processus de glissement dans une faille souterraine peut être modélisé sous forme de fissure de cisaillement à 2 ou 3 dimensions en cours de propagation. Comme les méthodes analytiques ne peuvent pas être utilisées pour des fissures finies, on a considéré diverses approches numériques à ce problème parmi laquelle la méthode des intégrales numériques aux limites est décrite en détail. Le processus de croissance d'une fissure peut être déterminé par l'utilisation d'un critère de rupture. Comme les propriétés du matériau telles que la résistance à la rupture ou les propriétés de friction varient sur les surfaces des failles réelles, deux types de modèles complexes de glissement, le modèle “Barrière” et le modèle “Aspérité”, sont discutés dans le contexte de la seismologie.
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Das, S. Application of dynamic shear crack models to the study of the earthquake faulting process. Int J Fract 27, 263–276 (1985). https://doi.org/10.1007/BF00017972
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DOI: https://doi.org/10.1007/BF00017972