ENGINEERING RESEARCH.
Abstract
The effective gauge length for bonded-end tensile specimens having a circular cross section was developed as a function of Poisson's ratio and the length-to-diameter ratio. Limited experimental results indicated that the results can be applied to specimens having a square cross section. A new method for the analysis of transient-state heat conduction problems for a solid propellant grain having any general star-shaped internal perforation was developed. Explicit finite difference equations were employed which were written for a conformally mapped coordinate network which was compatible with the boundaries of the grain. A generalized IBM 7090 computer program written in FORTRAN II was developed to solve transient-state heat conduction problems in star-perforated solid propellant grains using this method for a variety of initial conditions, boundary conditions, and exothermic chemical reactions. The FORTRAN listing and the analysis of an example problem are included in this report. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1963
- Accession Number
- AD0423195