On the slip-weakening behavior of rate- and state dependent constitutive laws

Details On the slip-weakening behavior of rate- and state dependent constitutive laws On the slip-weakening behavior of rate- and state dependent constitutive laws

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29k..11c&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 11, pp. 11-1, CiteID 1516, DOI 10.1029/2001GL013999

Physics

12

Seismology: Earthquake Dynamics And Mechanics, Seismology: Earthquake Parameters, Seismology: Theory And Modeling

Scientific paper

We study the dynamic traction behavior within the cohesive zone during the propagation of earthquake ruptures adopting rate- and state-dependent constitutive relations. The resulting slip-weakening curve displays an equivalent slip-weakening distance (D0eq), which is different from the parameter L controlling the state variable evolution. The adopted constitutive parameters (a, b, L) control the slip-weakening behavior and the absorbed fracture energy. The dimension of the nucleation patch scales with L and not with D0eq. We propose a scaling relation between these two lengthscale parameters which prescribes that D0eq/L ~ 15.

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