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AN IMPLEMENTATION OF THE SMOOTHED PARTICLE HYDRODYNAMICS FOR HYPERVELOCITY IMPACTS AND PENETRATION TO LAYERED COMPOSITES

Taiyuan University of Technology, P. R. China

School of Aerospace Systems, University of Cincinnati, USA

Centre for Advanced Computations in Engineering Science (ACES), Department of Mechanical Engineering, National University of Singapore, Singapore

Corresponding author.

Major parts of work were performed during the summer consultation at TUT and when the leading author was working at NUS.

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C. E. ZHOU

Market Risk, Bank of Montreal, 3rd Floor – 100 King St West, Toronto, ON Canada M5X 1A1, Canada

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, and

G. Y. WANG

School of Aerospace Systems, University of Cincinnati, Cincinnati, OH 45221, USA

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https://doi.org/10.1142/S0219876213500564Cited by:11 (Source: Crossref)

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.

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