Proceedings of the Materials Research Society Symposium on Fracture: Instability Dynamics, Scaling, and Ductile/Brittle Behavior. Volume 409,
Abstract
This volume contains the papers that were presented at the 1995 MRS Fall Meeting in Symposium Q, entitled 'Fracture: Instability Dynamics, Scaling, and Ductile/Brittle Behavior.' The purpose of the symposium was to bring together the many communities that investigate the fundamentals of fracture, with special sessions on the ductile/brittle transition, fracture at interfaces, fracture in ceramics and composites, dynamic instabilities in crack propagation, and fractals and scaling in fracture. A full-day joint session was held with Symposium P, 'Materials Theory, Simulations, and Parallel Algorithms.' What was most striking about the symposium was the rich variety of methods that investigators use to model fracture. At the most detailed level, ab initio techniques are used, for instance, to estimate the strength of adhesion at an interface as a function of local structure and composition. At the next level, classical molecular dynamics provide a close up view of a propagating crack in a two- or three-dimensional solid, at least over short length and time scales. Green's function methods provide a way to model the behavior of materials at the atomic scale in the static limit, with zero temperature and strain rate. At the mesoscale, defects such as dislocations may be modelled as point particles (in 2-D) or as line segments (in 3-D) with long-range interactions. The dislocation density may be approximated as a continuous function of position and time, or even treated as an order parameter in a statistical mechanical model. At larger length scales, finite element and continuum models are used to study mixed mode crack propagation, and bond network models are used to represent the behavior of fiber composites. p9
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1996
- Accession Number
- ADA311801
Entities
People
- Anders E. Carlsson
- Edwin R. Fuller Jr.
- John J. Mecholsky
- R. L. Selinger
Organizations
- Materials Research Society