Effect Of Viscoplastic Flow Rules On Steady State Penetration Of Thermoviscoplastic Targets
Abstract
Steady state thermomechanical deformations of a thick viscoplastic target being penetrated by a fast moving long rigid cylindrical penetrator are analysed by the finite element method. Two different constitutive relations, the Bodner-Partom flow rule, and the Litonski-Batra flow rule, are used to model the viscoplastic response of the material. The two flow rules are calibrated to give essentially similar shear stress-shear strain curves during the overall adiabatic simple shearing deformations of a block deformed at an average strain-rate of 3300 s-1. For the Bodner-Partom flow rule, the effect on target deformations of the penetrator nose shape, penetrator speed, and the variation in the values of material parameters of the target is also studied. © 1991.
Recommended Citation
R. C. Batra and A. Adam, "Effect Of Viscoplastic Flow Rules On Steady State Penetration Of Thermoviscoplastic Targets," International Journal of Engineering Science, vol. 29, no. 11, pp. 1391 - 1408, Elsevier, Jan 1991.
The definitive version is available at https://doi.org/10.1016/0020-7225(91)90044-4
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
0020-7225
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 Elsevier, All rights reserved.
Publication Date
01 Jan 1991
