Affiliation:
1. National University of Sciences & Technology
Abstract
Fractures in Solid system fuel structure pose a huge risk to structural integrity of the system. Ansys APDL scripting language has been used to analyze fractures with different geometry, material and loading. Parameterization of simulations resulted in developing a tool for solid fuel system designers to perform a quick fracture analysis during their design iterations. Numerical simulation results have been compared with the experimental data and a good agreement between the two has been found, ascertaining our numerical approach for the assessment of the problem. Crack length-Temperature superimposition has been performed to obtain master curves for the data, which can be used to predict stress intensity factor at different crack lengths.
Publisher
Trans Tech Publications, Ltd.
Reference11 articles.
1. Structural Assessment of Solid Propellant Grains, AGARD Advisory Report 350, (1997).
2. S. R. Swanson, Crack Propagation in Solid Rocket Propellant Grains Under Ignition Loading, M. S. Thesis, Department of Mechanical Engineering, University of Utah, June (1968).
3. H. K. Mueller, Stress-Intensity Factor and Crack Opening for a Linearly Viscoelastic Strip with a Slowly Propagating Central Crack, International Journal of Fracture Mechanics, 7, 2 (1971).
4. H. K. Mueller and W. G. Knauss, Crack Propagation in a Linearly Viscoelastic Strip, Journal of Applied Mechanics, 38, 2 (1971) 483.
5. W. G. Knauss, Stable and unstable crack growth in viscoelastic media, Society of Rheology Transactions, 13, 3 (1969) 292-313.