Antiferromagnetism in a doped spin-Peierls model: Classical and quantum behaviors |
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Authors: | R Mélin |
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Institution: | (1) Theoretical Polymer Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg i.Br., Germany, DE |
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Abstract: | We investigate the sequential cracking of thin brittle coatings attached adhesively to substrates. The focus of our study
are uniaxial tensile loading conditions, where we monitor the behavior in a continuous picture and the coating strength follows
a two-parameter Weibull distribution. For fracture well under way we derive an approximate analytical expression for the distribution
of fragment lengths. We recover that the distribution scales with the average fragment length and that is a power function of the applied strain , i.e.
, where depends on the distribution of the strength of the coating and on the adhesive's nonlinearity. Furthermore we compare our
approximate analytical expression with numerical solutions and with simulations' findings.
Received 16 February 2000 |
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Keywords: | PACS 05 40 -a Fluctuation phenomena random processes noise and Brownian motion - 46 65 +g Random phenomena and media - 46 50 +a Fracture mechanics fatigue and cracks |
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