From: roryoc@athena.mit.edu (Ruaidhri O'Connor)
Newsgroups: comp.graphics
Subject: MIT Conf - Call for papers - Physical simulation
Keywords: Physically-based-modeling, Animation, Distributed-numerical-analysis,
Date: 16 Sep 92 01:26:14 GMT
Organization: Massachusetts Institute of Technology

Visualization

        ****************************************************
                ANNOUNCEMENT AND CALL FOR PAPERS
        ****************************************************


                 2nd INTERNATIONAL CONFERENCE

                              ON

                 DISCRETE ELEMENT METHODS (DEM)

                       to be held at the

              Massachusetts Institute of Technology

                       March 17-18, 1993


                        Sponsored by

                         AFOSR, USBM
                            and
         Intelligent Engineering Systems Laboratory,
           Massachusetts Institute of Technology,
                  Cambridge, MA 02139, USA

        ***************************************************

	***************************************************
          Computer Graphics & Physical Simulation Section
 	***************************************************

        Related topics:

        - Physically based modeling and animation
	- Rigid and non-rigid body dynamics
	- Numerical methods for scientific visualization
	- Interactive physical simulation
	- Distributed numerical analysis and visualization
	- CA & LGA modeling of physical systems

	- See also "Typical areas of interest" below


                         Objectives
                         ----------
This is the second international conference on DEM to be held in
the U.S.A. Its purpose is to bring engineers, scientists,
mathematicians, and computer scientists active in this developing
field together to present their work, discuss relevant issues and
document the current state of DEM technology. Technical papers are
sought in either the theoretical development or application of DEM.
Typical areas of interest are summarized below:

* Computational models for physical simulation
* Analysis of dynamic contact/impact problems
* Animation/visualization of multi-body simulations
* Contact detection and contact force algorithms
* Discrete particle modeling of granular and fluid flow systems
* Cellular automata and lattice gas modeling
* Molecular dynamics modeling
* Particle system modeling
* Advanced computational DEM algorithms, including the use of
  supercomputing and parallel computing environments, and object
  oriented programming techniques.

Contributions are not restricted solely to the topics described
above, but are also encouraged from researchers working in related
research and development areas.

Please note: As a large reponse is expected for the Computer
************ Graphics & Physical Simulation section, there may be
             cause to limit the number of speakers. Therefore we
	     advise those of you interested to submit abstracts as
             soon as possible.

Papers for presentation will be selected on the review of a
technical abstract of approximately 500 words. Please mail or email
an abstract by October 7th, 1992 to the following address:

Dr. John R. Williams,
DEM Conference Coordinator,
Department of Civil and Environmental Engineering,
Massachusetts Institute of Technology,
77 Massachusetts Avenue, Room 1-272,
Cambridge,
MA 02139, USA.

Tel:   617-253-7201
Fax:   617-253-6324
email: john@iesl.mit.edu

Notification of acceptance will be given by October, 1992. The
final paper to be published in the conference proceedings should be
submitted by November 13th, 1992.


Organizing Committee:

John R. Williams        (Conference Coordinator)
                      - Massachusetts Institute of Technology
G.G.W. Mustoe         - Colorado School of Mines

Technical Commitee:

Z.P. Bazant           - NorthWestern University
N. Bicanic            - University of Wales, Swansea, U.K.
P.A. Cundall          - University of Minneseota
J. Ghaboussi          - University of Illinois
Major J. Gill         - Phillips Shock Physics Laboratory
J. Goddard            - UCSD, La Jolla
F.E. Heuze            - Lawrence Livermore National Lab
G. Hocking            - University of New South Wales
N. Kripakov           - US Bureau of Mines
M. Kuhn               - University of Portland
Major M. Lewis        - AFOSR
S. Nemat Nasser       - UCSD, La Jolla
T. Ng                 - University of New Mexico
D.R.J. Owen           - University of Wales, Swansea, U.K.
D. Preece             - Sandia National Laboratories
L. Rothenburg         - University of Waterloo, Canada
G. Shi                - University of California, Berkeley
M. Shoji              - Kajima, Tokyo, Japan
C. Thornton           - Aston University, U.K.
J. Ting               - University of Lowell
B. Trent              - Los Alamos National Laboratory
K. Worgan             - Intera Technologies Inc.

Background
----------
Continuum models of materials have dominated our approach to the
analysis of material behavior. Recently a number of numerical methods
which start at the microscopic level have gained attention, including,
discrete element, cellular automata, lattice gas, molecular dynamics
and percolation models. These theories, here referred to as discrete
element methods, offer a different view of the physics of material
behavior to the traditional techniques, such as finite element.

   Some have proposed that our thinking about material behavior has
been too greatly influenced by continuum theories, which are derived
without reference to the "ball-bearing" like atomic world which we
know exists at a finer level of detail. The continuum description has
proved quite accurate but is incomplete because we have no means of
calculating the physical  constants,  such as viscosity, which are
determined by the interaction of discrete particles  at the
microscopic level. To investigate these phenomena we are forced to
relinquish our continuum models and seek models which capture the
discrete structure of the microworld.

   The simplest discrete systems, so called cellular automata, have
been successful in simulating some aspects of the behavior of complex
physical systems, such as gases and fluids. It has been shown that the
macroscopic equations of dynamics arise naturally from statistical
mechanical consideration of  these systems.  Recently, percolation
models and lattice gas models have been used to investigate material
behavior.

   Discrete element models, in which the particles themselves have
internal structure and specific geometry, form a bridge between the
micro and macro world. Geometric structure is captured by the
potential fields of molecular dynamics or by more complex elements
which can simulate continuum stress and deformation states, much like
finite elements.

Recently the speed of modern computers  (including parallel
architectures) and the availability of efficient algorithms have made
large scale calculations using these discrete models particularly
attractive.


  Examples of particular applied mechanics problems which have been
investigated with DEM include: failure analysis of materials
(ceramics, rocks, ice, etc), mechanical behavior of granular media,
mechanical modeling of fractured and jointed rock masses,  fluid and
granular material flow, models of percolation paths and fracture
networks and the development of macroscopic constitutive laws from
microscopic discrete models.

                     Who Should Attend

   Engineering professionals and academics involved in the numerical
modeling of discrete systems, discontinuum analysis, or in the
micromechanics of material behavior, should attend this conference.

                        Location

The conference will take place on the campus of the Massachusetts
Institute of Technology, in Cambridge, Massachusetts.

                         Fees

Conference Registration: $350.00, which includes a copy of the
conference proceedings to be published by Pineridge Press.

                Registration Information

Please complete the advance response form in order  to
assist in conference arrangements.

===================================================
               ADVANCE RESPONSE FORM

Return to:
  Dr. John R. Williams, DEM Conference Coordinator,
  Department of Civil Engineering,
  Massachusetts Institute of Technology,
  77 Massachusetts Avenue, Room 1-272,
  Cambridge,  MA 02139, USA.

(Please print or type)

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Please check appropriately:
   _
  |_| I am interested in attending the conference
      (March 17-18, 1993)
   _
  |_| I am interested in presenting a paper at 
      the conference, entitled:

      ___________________________________________

      ___________________________________________

      Field of Interest: