Accession Number:

ADA446367

Title:

Development of Computational Models and Input Sensitivity Study of Polymer Reinforced Concrete Masonry Walls Subjected to Blast

Descriptive Note:

Interim rept. 1 Dec 2003-1 Dec 2004

Corporate Author:

ALABAMA UNIV IN BIRMINGHAM SCHOOL OF ENGINEERING

Report Date:

2004-12-01

Pagination or Media Count:

170.0

Abstract:

Computational models were developed and used to simulate polymer reinforced masonry walls subjected to blast loading and the models were used to understand the response of the structure. LS-DYNA, a nonlinear finite element solver, was used. Model development challenges were considered, and appropriate input parameters were determined. With these pedestal values, a baseline model of one unit width of concrete masonry block was developed, and the response under two load conditions was studied. Dimensional and mechanical variants involved in the system were varied to study their effect on wall behavior. The effects of door and window openings on the performance of the polymer reinforcement were evaluated. This report also presents an analysis of strain rate that occurs in the polymer coating and results were compared to theory-based closed form solutions. Finally, the static nonlinear capabilities of LS-DYNA were used to describe the static resistance of the system, and a theoretical description of a simply supported membrane subjected to pressure load is provided and compared with nonlinear finite element results.

Subject Categories:

  • Laminates and Composite Materials
  • Numerical Mathematics
  • Structural Engineering and Building Technology
  • Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE