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Characteristics of Constitutive Equations under Rod Impact Analysis by Smoothed Particle Hydrodynamics  

김용환 (충남대학교 기계설계공학과)
김용석 (국방과학연구소)
이정민 (㈜풍산 안강공장)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.6, no.3, 2003 , pp. 62-73 More about this Journal
Abstract
The characteristics of constitutive equations, for hydrocodes, were Investigated by the comparison between the smoothed particle hydrodynamcis simulation and the experiment of rod impact test which resulted in a deformation history of impacting front where high strain and high strain rate dominate. The constitutive equations used in the simulation Is J-C(Johnson-Cook) model, Z-A(Zerilli-Armstrong) model, and S-C-G(Steinberg-Cochran-Guinan) model. The modification of Z-A model, based on the increased effect of strain-rate hardening, showed better correlation with expriment.
Keywords
Constitutive Equation; High-strain; High-strain-rate; Rod Impact Test; Hydrocode; Smoothed Particle Hydrodynamics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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