Melt-Dominated Impulse Experiments and Calculations
Abstract
A combined experimental and analytical study of impulse generation in aluminum has been carried out using intense electron beams as the source of high energy density loading. Both analytical models and hydrodynamic codes were used in the modeling of the observed material response. In addition this report presents a detailed survey of current calculational techniques and an extensive discussion of the experimental methods required for this work. For the electron beam fluence range employed here, giving peak doses less than 2000 cal/g, a model of liquid spall was found to represent the data well. This model was simplified to an analytical expression which depends exponentially on deposition time and is suitable for predicting melt-dominated impulse in a wide range of materials. In addition, hydrodynamic code calculations have been carried out and comparisons are made with measured transmitted stress histories and liquid ejecta velocities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1970
- Accession Number
- AD0714538
Entities
People
- A. Lutze
- G. Yonas
- J. Reaugh