The cooperative effect of load and disorder in thermally activated rupture of a two-dimensional random fuse network

Abstract

A random fuse network, or equivalently a two-dimensional spring network with quenched disorder, is subjected to a constant load and thermal noise, and studied by means of numerical simulations. Rupture is thermally activated and the lifetime follows an Arrhenius law where the energy barrier is reduced by disorder. Due to the non-homogeneous distribution of forces from the stress concentration at microcrack tips, spatial correlations between rupture events appear, but they do not affect the energy barrier's dependence on the disorder; they affect only the coupling between the disorder and the applied load.

References in corpus (2)

• Creep motion of an elastic string in a random potential
• Non-equilibrium relaxation of an elastic string in a random potential

Cited by in corpus (7)

• Failure Processes in Elastic Fiber Bundles
• Experimental study of the effect of disorder on subcritical crack growth dynamics
• Attractive and repulsive cracks in a heterogeneous material
• Thermal effects on fracture and brittle-to-ductile transition
• Micro-structure of damage in thermally activated fracture of Lennard-Jones systems
• Thermally Activated Fracture of Porous Media
• Roughening and pinning of interface cracks in shear delamination of thin films