Author(s)

P. Matic, A.B. Geltmacher, G.C. Kirby, L.M. McCorkle, A.L. Russell & V.G. DeGiorgi

Abstract

Studies for hierarchical ductile damage simulations P. Matic, A.B. Geltmacher, G.C. Kirby, L.M. McCorkle, A.L. Russell, V.G. DeGiorgi Fracture Mechanics Section (Code 6382), Naval Research Laboratory, Washington, D.C. 20375, USA ABSTRACT Three levels of damage interaction and complexity are investigated, using two dimensional simulation and experiments, to gain insight into ductile damage and fracture. Interactions between two holes are studied in detail to assess strain hardening influence and applied load. Pseudo-random sixteen hole arrays are used to examine nonuniform localization patterns. Massively parallel cellular automata are used to simulate complex mesoscale damage kinematics. INTRODUCTION The hierarchical nature of material damage is well known. Modeling of the underlying elements of randomness and complexity of the damage process is a challenging problem. Complex interactions occur at and between scales from the microscale up to and including the mesoscale. Three

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