Article

A damage-mechanics model for fracture nucleation and propagation

Department of Physics, One Shields Ave., University of California, Davis, CA 95616, United States; Department of Geology, One Shields Ave., University of California, Davis, CA 95616, United States; Sante Fe Institute, Santa Fe, NM 87501, United States; Department of Physics, Boston University, Boston, MA 02215, United States
Theoretical and Applied Fracture Mechanics DOI:10.1016/j.tafmec.2010.06.002 pp.180-184

ABSTRACT In this paper, a composite model for earthquake rupture initiation and propagation is proposed. The model includes aspects of damage mechanics, fiber-bundle models, and slider-block models. An array of elements is introduced in analogy to the fibers of a fiber bundle. Time to failure for each element is specified from a Poisson distribution. The hazard rate is assumed to have a power-law dependence on stress. When an element fails it is removed, the stress on a failed element is redistributed uniformly to a specified number of neighboring elements in a given range of interaction. Damage is defined to be the fraction of elements that have failed. Time to failure and modes of rupture propagation are determined as a function of the hazard-rate exponent and the range of interaction.

0 0
 · 
0 Bookmarks
 · 
19 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

composite model
 
damage mechanics
 
earthquake rupture initiation
 
elements
 
failed element
 
fiber-bundle models
 
fibers
 
given range
 
hazard rate
 
hazard-rate exponent
 
Poisson distribution
 
power-law dependence
 
rupture propagation
 
slider-block models
 
specified number
 

G. Yakovlev