ENGINEERING RESEARCH
Abstract
T BI-AXIAL STRESS TEST FIRST PROPOSED FOR PROPELLANTS BY Fitzgerald (diametrical compression of a circular disk between the platens of a testing machine) was gener lized to elliptical disks; large deformation and viscoelastic a pects are included. A theor ic l stres analysis based on classical small defor ation elastic theory of an elliptical disk diam trically compressed by concentrated loads showed that a relatively large range of principal stress ratios at the disk center could be achi ved by varying the eccentricity of the disk. The thermal stability test recommended by the JANAF Panel on Liquid Propellant Test Methods was analyzed theoretically. A IMPLIFIED MO EL OF THE TEST WAS FORMULATED AND D SCRIBED MATHEMATICALLY; THE MODEL WAS SOLVED NUMERICALLY AND ITS PERFORMANCE INVESTIGATED PARAMETRICALLY. It was conclu ed that the test i suitable as a quick method of determining the qualitative sensitivity of an explosive to thermal initiation but that it was of limited utility as a means of determining quantitative data on the decomposition process of an explosive. Recommendations for improving the test were made. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 06, 1962
- Accession Number
- AD0275994
Entities
People
- John J. Brisbane
- W.h. Iii Groetzinger