Numerical Simulation of the Impact between the Front-End-Coated Projectile and the Substrate Coated by Ceramic Film

Zhi Lin Wu; Xiao Mei Wang

doi:10.4028/www.scientific.net/AMM.226-228.2198

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 226-228Numerical Simulation of the Impact between the...

Numerical Simulation of the Impact between the Front-End-Coated Projectile and the Substrate Coated by Ceramic Film

Abstract:

The propagation of the stress wave in axial direction during the impact between the front-end-coated projectile and the substrate coated by ceramic films is described by the stress wave theorem. The impact process is numerically simulated by ANSYS/LS-DYNA, where the shell unit is used for precision. The effects of thickness of the front-end coating on the interfacial stress are discussed in detail. Dependence of different ceramic films are also considered. Simulation results show that interfacial normal stress is much greater than tangential stress. The interfacial normal stress is greatest when the thickness of the projectile coating is 0.2 mm. The interfacial tangential stress increases slightly as the thickness of coating increases. Similar stress history in the interface occurs when the acoustic impedance of the films are close. Greater acoustic impedance results in smaller stress.

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Periodical:

Applied Mechanics and Materials (Volumes 226-228)

Pages:

2198-2202

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.226-228.2198

Citation:

Cite this paper

Online since:

November 2012

Authors:

Zhi Lin Wu, Xiao Mei Wang

Keywords:

Acoustic Impedance, Ceramic Film, Front-End-Coated Projectile, Impact, Stress Wave

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