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Title: Spherical cavity-expansion forcing function in PRONTO 3D for application to penetration problems

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In certain penetration events the primary mode of deformation of the target can be approximated by known analytical expressions. In the context of an analysis code, this approximation eliminates the need for modeling the target as well as the need for a contact algorithm. This technique substantially reduces execution time. In this spirit, a forcing function which is derived from a spherical-cavity expansion analysis has been implemented in PRONTO 3D. This implementation is capable of computing the structural and component responses of a projectile due to three dimensional penetration events. Sample problems demonstrate good agreement with experimental and analytical results.
Authors:
;
Publication Date:
OSTI Identifier:
481577
Report Number(s):
SAND--97-1174
ON: DE97007442; TRN: AHC29712%%120
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: May 1997
Research Org:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; PENETRATORS; P CODES; DEFORMATION; TARGETS; RESPONSE FUNCTIONS; PROJECTILES; FINITE ELEMENT METHOD; IMPACT SHOCK