Workshop


Fractal Analysis and Modeling of Materials

April 26-28, 1995

Hosted by

the Center for Nonlinear Studies

Sponsored by

the Center for Nonlinear Studies

and


the Theoretical Division

Los Alamos National Laboratory


Organizers: Raphael Blumenfeld and Alan R. Bishop

AGENDA

Wednesday April 26, 1995

08:00 Registration opens

08:30 Welcome, C. Doering, Deputy Director, CNLS

08:35 Opening remarks, R. Blumenfeld (Los Alamos)

08:45 J.S. Langer (Univ. of California, Santa Barbara) - Some Issues in the Theory of Dynamic Fracture

10:00 Refreshment break

10:15 M. Marder (Univ. of Texas, Austin) - Atomic Effects in Brittle Fracture

10:45 S.J. Zhou (Los Alamos) - The Study of Dynamic Fracture using Massively Parallel MD

11:15 J.H. Simmons (Univ. of Florida) - MD Simulations of Fracture in Brittle Materials

11:45 Lunch

13:00 W.G. Knauss (CalTech) - Basic Phenomena in the Dynamic Propagation of Cracks in Brittle Solids

14:15 J.J. Mecholsky (Univ. of Florida) - Fractal Fracture in Brittle Materials: What Needs to be Done?

14:45 Refreshment break

15:00 D.A. Lange (Univ. of Illinois) - Fractal Analysis of Fracture Surfaces and an Approach to Mechanical Modeling of Fracture

15:30 K. Ravi-Chandar (Univ. of Houston) - Periodic Morphology in Fast Fracture: An Examination of the Fracture Mechanism

16:00 Panel discussion

19:00 Dinner at Gabriel's Restaurant

Thursday April 27, 1995

09:00 B.B. Mandelbrot (Ecole Polytechnique / Yale Univ.) - Characterizing Fractal Structures

10:15 Refreshment break

10:30 J.A. Krumhansl (Cornell Univ.) - Just Plain Phonons or Fractons?

11:00 S.I. Wright (Los Alamos) - Orientation Correlations and their Relationship to Morphology

11:30 Lunch

13:00 J. Martin (Sandia) - How do the Fractal Aspects of Aggregation and Gelation Impact Technologically Important Problems?

14:15 S.P. Chen (Los Alamos) - Spring-Network Modeling of Brittle/Brittle and Brittle/Ductile Composites

14:45 Refreshment break

15:00 A. Redondo (Los Alamos) - Comparison of Force Fields for the Estimation of Crystal Geometry and Energy in All-Silica Zeolites

15:30 R.L. Orbach (Univ. of California, Riverside) - Vibrational Dynamics of Amorphous and Glassy Materials

16:00 Panel discussion

Friday April 28, 1995

09:00 J.E. Sethna (Cornell Univ.) - Tweed in Martensites: Spin Glasses and the Two-Way Shape-Memory Effect

10:30 Refreshment break

10:45 A. Saxena (Los Alamos) - Hierarchical Structures in Martensitic Materials

11:15 D.C. Dunand (MIT) - Composite Shape-Memory Alloys

11:45 Lunch

13:00 M. Wuttig (Univ. of Maryland) - Textures and Properties of Bulk and Thin Film In-Tl Model and NiTi Thin Film Shape-Memory Alloys

14:15 R.D. James (Univ. of Minnesota) - Emergence of Microstructure from Energy Minimization

14:45 Refreshment break

15:00 Panel discussion / Summary session