3D Fragment Throw Simulation to Determine Fragment Density and Impact on Buildings
Abstract
HAZX is a software tool for assessing explosive hazards when the Quantity-Distance (Q-D) safe separation requirements are violated. This paper presents the development of DebrisHaz, a sub-module in HAZX for performing detailed, site specific fragmentation hazard analyses. Features of this module include: a) 3D modeling of site terrain and structures; b) random sampling of fragments from a user-specified fragment source; c) computation of fragment trajectories with drag correction; d) physics-based 3D simulation of fragment impact, bounce and roll; e) use of trajectory-normal method for calculating fragment density; f) capability to track fragment impacts with a 3D structure's wall and roof surfaces using collision detection algorithms; g) calculation of the expected number of penetrations into a building. The trajectory calculator has been verified with a range of established computer programs, and the bounce model has been compared against field test data with good agreement. The tool has been used to perform detailed, site-specific fragment risk analyses that account for unique fragmentation characteristics, uneven/non-uniform terrain, and the shielding of people or structures by natural geographical features or by other structures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 2010
- Accession Number
- ADA532180
Entities
People
- Jon D. Chrostowski
- Wenshui Gan