Accession Number:

ADA393311

Title:

Scalable Implementation of Three-Dimensional Heterogeneous Media Subjected to Short Transient Impact Loads

Descriptive Note:

Final rept. Oct-Sep 1999

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD ADVANCED COMPUTATIONAL AND INFORMATION SCIENCES DIRECTORATE

Report Date:

2000-09-01

Pagination or Media Count:

46.0

Abstract:

This report is concerned with developing and implementing scalable algorithmic approaches for solving coupled micro and macro structural applications based on the asymptotic expansion homogenization AEH method. AER for nonlinear and short transient loading applications is computationally demanding and cannot be addressed on serial computers. Hence, the emphasis of the present investigation is to develop and implement consistent AEH numerical formulations on scalable computers to address elasto-plastic material response of structures subjected to short transient loading. A second order, accurate velocity-based, explicit time integration method, in conjunction with the AEH method on scalable computing architectures, is implemented using message-passing interface MPI. Two different scalable implementation approaches are discussed, and the scalability of the computational approach is demonstrated.

Subject Categories:

  • Numerical Mathematics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE