Shock Development from Compression Waves Due to Confined Burning in Porous Solid Propellants and Explosives
Abstract
When a high energy solid propellant or explosive becomes porous, either by design or by accidental damage, it becomes more sensitive to shock-to- detonation transition (SDT). Stress waves propagating ahead of the convective flame front cause pore collapse which creates a confined bulk reaction zone. With sufficient pressurization in the reaction zone, the stress waves coalesce to form a shock. This paper describes an attempt to model the shock formation in porous solids by coupling the -gas pressurization to the solid mechanics of pore collapse and shock formation. Concepts are presented which indicate why porous materials are more sensitive to shock initiation than solids; mainly it is due to a greater bulk energy and formation of localized hot spots.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1983
- Accession Number
- ADA127581
Entities
People
- Daniel W. Coyne
- Herman Krier
- P. B. Butler
Organizations
- University of Illinois Urbana–Champaign