Wednesday Afternoon, October 25
MS35
Analytical and Computational Studies of Granular Flow Modelling and Elastoplasticity Problems (Part I of II)
This minisymposium will focus on analytical and numerical aspects
of granular flow modelling and elastoplasticity problems. Granular flows
are modelled here in the framework of plasticity or elastoplasticity. A major
issue is to determine conditions under which singularities (shear bands) occur.
Physical behavior, and hence mathematical treatment, of a plasticity problem
differs depending on whether the material exhibits hardening behavior or not.
Perfect plasticity necessitates analytical and numerical approaches taking
account of the fact that singularities such as shear bands or yield lines may
develop. The speakers will address the consequences of admitting hardening
behavior. They will discuss the form of variational problems, the tools required
to study these problems, and particular features of solution algorithms.
Organizers: Weimin Han, University of Iowa and B. Daya Reddy,
University of Cape Town, South Africa
- 1:30 A Survey of Work in Granular Flow
- David G. Schaeffer, Duke University
- 2:00 Formation of Shear Bands in Models of Granular Materials
- Michael Shearer, North Carolina State University
- 2:30 Numerical Algorithms for Shear Bands in Granular Materials
- F. Xabier Garaizar, North Carolina State University
- 3:00 Numerical Simulation
of a Granular Material
- Richard B. Clelland and Peter A. Thompson, Duke University
- 3:30 Viscoplastic Relaxation
in Granular Flow
- E. Bruce Pitman,
State University of New York, Buffalo
7/27/95