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A computational analysis of a shear punch test / Stephan R. Bilyk.
- Format:
- Book
- Government document
- Author/Creator:
- Bilyk, Stephan R., author.
- Language:
- English
- Subjects (All):
- Shear (Mechanics)--Testing.
- Shear (Mechanics).
- Propellants--Testing.
- Propellants.
- Explosives--Testing.
- Explosives.
- Polycarbonates--Testing.
- Polycarbonates.
- Genre:
- technical reports.
- Technical reports.
- Physical Description:
- 1 online resource (approximately 14 pages) : illustrations
- Place of Publication:
- Aberdeen Proving Ground, MD : Army Research Laboratory, August 2009.
- Summary:
- The intense shearing that occurs in propellants and explosives during impulsive loading can lead to initiation. In an effort to determine useful shear initiation criteria, the U.S. Army Research Laboratory (ARL) has developed a shear punch test using a modified Kolsky bar. Varying the striker bar's velocity and length controls the shear rate and duration. Shear velocities approaching 100 m/s and durations as long as 200 microns are possible. Experimental results have been obtained for several energetic materials and a nonreacting polymer, polycarbonate (PC). This report presents a detailed computational analysis of the shear punch test using the Arbitrary-Lagrangian-Eulerian code ALEGRA. The inert PC was selected for this preliminary study since a more complete set of dynamic property data is available for this material. The validity of a conventional viscoplastic constitutive relation and the failure criterion for PC is determined based on their ability to predict the observed mechanical response. An alternative viscoelastic-plastic model is presented for improving the predicted material response.
- Notes:
- Description based on online resource, PDF version; title from title page (DTIC, viewed March 18, 2021).
- "ARL-RP-263."
- "August 2009."
- "A reprint from the Proceedings of the JANNAF Conference, Colorado Springs, CO 1-5 December 2003."
- Conference paper.
- OCLC:
- 495783917
- Access Restriction:
- Approved for public release.
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