Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Colloquia Archive 
 Postdoc Seminars Archive 
 Quantum Lunch 
 Quantum Lunch Archive 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 P/T Colloquia 
 Kac Lectures 
 Kac Fellows 
 Dist. Quant. Lecture 
 Ulam Scholar 
 CNLS Fellowship Application 
 Student Program 
 Past Visitors 
 History of CNLS 
 Maps, Directions 
 CNLS Office 
Wednesday, July 22, 2009
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)


A Cellular Automation Model of Damage

William Klein
Boston University

We present the results of investigating a generalization of the fiber bundle model of damage which allows us to consider variations which can interpolate between the fiber bundle models and hierarchical models. In particular we consider the effects of the creation of vacancies and how this creation leads to catastrophic failure. In addition we investigate the effect of noise and stress transfer range on the failure mode and the nature of the correct theoretical description for these models. Our primary results are that the failure mode of the system is strongly dependent on the stress transfer range and the magnitude of the noise. Moreover we find that equilibrium based approaches are insufficient to describe the failure process independent of the rate of insertion of damage and healing rate.

Host: Francis Alexander