Fluctuations on material response due to heterogeneity are known to contain intrinsic properties of the material. Two simple discrete models are presented and the fluctuations encountered on their responses are analyzed through avalanche distributions, which represent the evolution of micro-events of degradation in the material. Both models are based on the fiber bundle model. The first one deals with the propagation of an infinite ID crack between an elastic body and a rigid substratum. The second one deals with the rupture of a softening heterogeneous material coupled to an elastic body. (C) 2002 Elsevier Science Ltd. All rights reserved.
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Univ Calif Davis, Dept Civil & Environm Engn, One Shields Ave, Davis, CA 95616 USAUniv Calif Davis, Dept Civil & Environm Engn, One Shields Ave, Davis, CA 95616 USA
Bolander, John E.
Elias, Jan
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Brno Univ Technol, Fac Civil Engn, Inst Struct Mech, Veveri 331-95, Brno 60200, Czech RepublicUniv Calif Davis, Dept Civil & Environm Engn, One Shields Ave, Davis, CA 95616 USA
Elias, Jan
Cusatis, Gianluca
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Northwestern Univ, Dept Civil & Environm Engn, 2145 Sheridan Rd,Tech A134, Evanston, IL 60208 USAUniv Calif Davis, Dept Civil & Environm Engn, One Shields Ave, Davis, CA 95616 USA
Cusatis, Gianluca
Nagai, Kohei
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Univ Tokyo, Inst Ind Sci, Meguro Ku, 4-6-1 Komaba, Tokyo 1538505, JapanUniv Calif Davis, Dept Civil & Environm Engn, One Shields Ave, Davis, CA 95616 USA