Dynamic Fracture Mechanics

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Slip-Weakening FrictionAssuming a linear dependence of theforce with slip S (see figure):Cohesive force as a function of slipThere exists a cohesive zone behind thecrack tip where friction drops to its dynamiclevel
<strong>Fracture</strong> Cohesive ZoneAssuming a linear dependence of theforce with slip S (see figure), Ida (1972)showed that the length of the cohesivezone may be approximated as:Cohesive force as a function of slipwhereAndrews (2004) showed that such azone suffers a contraction with rupturepropagation distance L so thatDay et al. (2005), from energy balanceconsideration, showed that suchLorentz contraction depends on thefracture mode and rupture velocity.
Page 2: Macroscopic Fault MechanicsFrom obs
Page 6 and 7: Now consider a slip function S that
Page 8 and 9: Unidirectional Anti-Plane Moving Cr
Page 10 and 11: Cohesive Forces over the FractureTh
Page 14: Fracture Energy BalanceThe total en

Dynamic Fracture Mechanics

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