ESTS0138 DYNA3D2000.

1. NAME OR DESIGNATION OF PROGRAM:  DYNA3D2000

3. DESCRIPTION OF PROGRAM OR FUNCTION

DYNA3D2000 is a nonlinear explicit finite element code for analyzing 3-D structures and solid continuum. The code is vectorized and available on several computer platforms.  The element library includes continuum, shell, beam, truss and spring/damper elements to allow maximum flexibility in modeling physical problems.  Many materials are available to represent a wide range of material behavior, including elasticity, plasticity, composites, thermal effects and rate dependence.  In addition, DYNA3D has a sophisticated contact interface capability, including frictional sliding, single surface contact and automatic contact generation.
  
This package is distributed by:
Energy Science and Technology Software Center
P.O. Box 62
1 Science.Gov Way
Oak Ridge, TN 37831
(865) 576-2606 TEL
(865) 576-6436 FAX
E-mail: ESTSC@osti.gov

4. METHOD OF SOLUTION

Discretization of a continous model transforms partial differential equations into algebraic equations.  A numerical solution is then obtained by solving these algebraic equations through a direct time marching scheme.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Recent software improvements have eliminated most of the user identified limitations with dynamic memory allocation and a very large format description that has pushed potential problem sizes beyond the reach of most users.  The dominant restrictions remain in code execution speed and robustness, which the developers constantly strive to improve.

6. TYPICAL RUNNING TIME

Execution time is problem size and simulation duration dependent.  Thus short problems take 1 minute while the long ones can take several weeks.

7. UNUSUAL FEATURES OF THE PROGRAM

Contact slide surface methods for automatic and Lagrange contact methods, explicit integration, mass augmentation, rigid/deformable material switching and advance material constitutive behaviors.

8. RELATED AND AUXILIARY PROGRAMS:  INGRID, GRIZ, NIDE3D, TOPAZ3D and DIGLIB.

11. MACHINE REQUIREMENTS

UNIX workstations and CRAY running Unicos.  Memory requirement is problem-size dependent, however a minimum memory of 16 MB is recommended.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  UNIX and UNICOS

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Fortran files use a .f extension, make files end in .mk, include files terminate with .h and all of the example problems are in the EXAMPLES subdirectory and begin with d3.

15. NAME AND ESTABLISHMENT OF AUTHORS

          Lin, J.
          Lawrence Livermore National Lab.
          Livermore, CA (United States)

Contributed by :
          Energy Science and Technology Software Center
          P.O. Box 1020,
          Oak Ridge,
          TN 37831