Strength Reduction in Electrical and Elastic Networks

Details Strength Reduction in Electrical and Elastic Networks Strength Reduction in Electrical and Elastic Networks

2002-05-10

arxiv.org/abs/cond-mat/0205214v1

Physics

Condensed Matter

Statistical Mechanics

one compressed file includes: 9 PostScrpt figures and a text file

Scientific paper

10.1103/PhysRevB.66.144203

Particular aspects of problems ranging from dielectric breakdown to metal insu- lator transition can be studied using electrical o elastic networks. We present an expression for the mean breakdown strength of such networks.First, we intro- duce a method to evaluate the redistribution of current due to the removal of a finite number of elements from a hyper-cubic network of conducatances.It is used to determine the reduction of breakdown strength due to a fracture of size $\kappa$.Numerical analysis is used to show that the analogous reduction due to random removal of elements from electrical and elastic networks follow a similar form.One possible application, namely the use of bone density as a diagnostic tools for osteorosporosis,is discussed.

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