An implementation of the smoothed particle hydrodynamics for hypervelocity impacts and penetration to layered composites
Liu, G.R. Zhou, C.E. Wang, G.Y.
Zhou, C.E.
Wang, G.Y.
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Abstract
Driven by applications in the design of protective structure systems, the need to model high velocity impact is becoming of great importance. This paper presents a Smoothed Particle Hydrodynamics (SPH) procedure for 3D simulation of high velocity impacts where high rate hydrodynamics and material strength are of great concern. The formulations and implementations of the Johnson-Cook strength and damage model considering temperature effect, and Mie-Gruneison and Tilloton equations of state are discussed. The performance of the procedure is demonstrated through two example analyses, one modeling a cubic tungsten projectile penetrating a multi-layered target panel and the other involving a sphere perforating a thin plate. The results obtained, with comparisons made to both experimental results and other numerical solutions previously reported, show that our SPH-3D implementation is accurate and reliable for modeling the overall behavior of the high rate hydrodynamics with material strength. © 2013 World Scientific Publishing Company.
Keywords
Hypervelocity impact, material description in hydrocode, meshfree method, numerical method, particle method, smoothed particle hydrodynamics
Source Title
International Journal of Computational Methods
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Date
2013-06
DOI
10.1142/S0219876213500564
Type
Article