Analytical investigation of energy absorption and damage in the composite plates reinforced with nanoparticles under high velocity impact

Document Type : Research Paper

Authors

1 Phd Student / Mechanical Engineering Department, Shahrekord University, Shahrekord

2 Assistant Professor / Mechanical Engineering Department, Shahrekord University, Shahrekord

3 Assistant Professor / Mechanical Engineering Department, Tafresh University

Abstract

In this paper, the energy absorption and delamination damage in thin composite plates reinforced with nanoparticles under ballistic impact are investigated analytically. During perforation process in the nanocomposite plates considered different regions such as: fracture region, elastic deformation region, delamination region. Mechanical properties like tensile modulus, fracture strain, shear modulus, strain energy release rate specification of projectile and target were used as input to the analytical model. Then, by using of analytical relations and input data are achieved the deflection, strains and tensions around the impact point of the target. Also the amount of energy absorbed by different failure modes and the kinetic energy variation of projectile and target at small time intervals, the radius and energy of the delamination and residual velocity of the projectile is estimated. Finally, the results of analytical models on the nanocomposite plates compared with experimental results under ballistic impact and a good agreement was found. According to the results obtained the effect of nanoparticles on the improved mechanical properties of composite materials and also investigation of various failure modes is discussed.

Keywords

Main Subjects

References

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Aerospace Knowledge and Technology Journal
Volume 7, Issue 2 - Serial Number 2
December 2018
Pages 35-50

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