Ballistic Impact Behavior of Thick Composites: Analytical Formulation

Naik, N.K.; Doshi, Akash

doi:10.2514/1.11993

Cited by 50 publications

(29 citation statements)

References 21 publications

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“…Naik et al (Indian Institute of Technology Bombay) published some work [50][51][52][53][54][55][56][57] with results of experimental and analytical studies of mechanical behaviour of CFRP, GFRP and hybrid composites under the high-velocity impact. The analytical model developed by the authors was quite similar with the model presented by Morya et al The differences were in the accounting of the inhomogeneity of the deformations distribution in the composite fibres through the thickness, considering the additional mechanism of energy dissipation -shear plugging.…”

Section: Main Energy Absorption Mechanisms In Composites During High-mentioning

confidence: 99%

Creation and verification of computational models for analysis of the mechanical behaviour of jet engines composite components under high-velocity impact: main problems and basic recommendations

Kudryavtsev

Zhikharev

Olivenko

2019

PNRPU Mechanics Bulletin

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Currently, modern CAE programs like ANSYS, LS-DYNA, ABAQUS, Simcenter 3D etc. are widely used to develop each engineering product. CAE reduces development costs and speeds up product launches. Computer modelling allows eliminating unsuccessful design options at early design stages and minimising or eliminating critical design changes at the prototype testing stage. Computer simulations are especially needed for the development of high-performance perfection designs like jet engines. The use of composites in the engines requires the availability of appropriate design tools to assess the mechanical behaviour of structural elements made of such materials under operational loads and in an emergency. Predictive modelling of the deformation and fracture of the composite fan blades and fan case subjected to dynamic loading cause considerable interest of engineers. As in the case of simulation of shock loading of metals, a model of a composite material must be verified. However, the problem is that the fibrous composite material itself is already a structure and can be modelled in various ways: without considering the layered structure (homogeneous approach) taking the mesostructure into account (at the ply-level or at the yarn-level) taking the microstructure into account (at the filament level). The requirements for the initial data, the number of parameters determined during the verification process, the complexity of creating geometric models will differ in each case. This paper briefly describes the main approaches to the numerical simulation of composite elements under highvelocity impact loading. The main advantages and disadvantages of these approaches are also considered. On the example of the meso-scale approach, the main parameters of the computational models that affect the results of calculations are shown. Based on the obtained data, the main recommendations were formulated on the validation of meso-scale models of composites.

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Section: Main Energy Absorption Mechanisms In Composites During High-mentioning

confidence: 99%

Creation and verification of computational models for analysis of the mechanical behaviour of jet engines composite components under high-velocity impact: main problems and basic recommendations

Kudryavtsev

Zhikharev

Olivenko

2019

PNRPU Mechanics Bulletin

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“…These analysis provide algebraic or differential equations whose solutions are of value in the early stages of the design process of structural components. Most of these models have been developed in the sphere of ballistic protection, using flexible laminates of aramid or polyethylene fibers (Chocró n et al, 1997;Navarro, 1998;Naik and Doshi, 2005;Naik et al, , 2006. A smaller number of impact models consider glass fiber or carbon laminates whose structural function is to resist static or dynamic loads and that may be subjected to high-speed impact.…”

Section: Introductionmentioning

confidence: 99%

An analytical model for high velocity impacts on thin CFRPs woven laminated plates

López-Puente

Zaera

Navarro

2007

International Journal of Solids and Structures

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An analytical model to study the impact process of a spherical projectile penetrating at high velocity into a carbon/ epoxy plain woven laminate is developed in this work. The model is based on an energy balance, where the kinetic energy of the projectile is absorbed by the laminate by three different mechanisms: laminate crushing, linear momentum transfer and tensile fiber failure. A non-homogeneous differential equation is obtained. A subsequent simplification using regular perturbation analysis gives a closed-form solution that allows the approximative calculation of the residual velocity and hence the ballistic limit. The model is validated with the results of experimental tests in which the residual velocity is measured by means of high speed cameras.

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“…The representative studies are presented. [4][5][6][7][8][9][10][11][12][13][14][15] Typical studies on high velocity impact behavior of 3D woven composites are presented. [16][17][18][19][20][21][22][23][24][25][26] Flanagan et al 16 studied penetration resistance and failure modes of 3D textile composites under high velocity impact experimentally.…”

Section: Introductionmentioning

confidence: 99%

High velocity impact performance of three-dimensional woven composites

Udatha

Kumar

Nair

et al. 2012

The Journal of Strain Analysis for Engineering Design

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Performance of three-dimensional orthogonal woven E-glass/epoxy composites under high velocity impact is presented. The analytical method used is based on wave propagation and energy balance between the projectile and the target. Different damage and energy absorbing mechanisms for a typical three-dimensional orthogonal woven composite are compression of the target directly below the projectile, compression in the surrounding region of the impacted zone, tension in the region consisting of primary yarns, tensile deformation in the region consisting of secondary yarns, shear plugging, bulge formation on the back face of the target, matrix cracking and friction between the target and the projectile. Experimental studies are also presented on high strain rate characterization, shear plugging behavior and high velocity impact behavior. For comparison, studies are also presented on the performance of two-dimensional plain weave E-glass/epoxy composites. A good match is observed between the analytical predictions and experimentally obtained limit velocities for complete penetration. It is observed that limit velocity for complete penetration for threedimensional woven composite is higher than that for two-dimensional plain weave composite.

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Ballistic Impact Behavior of Thick Composites: Analytical Formulation

Cited by 50 publications

References 21 publications

Creation and verification of computational models for analysis of the mechanical behaviour of jet engines composite components under high-velocity impact: main problems and basic recommendations

Creation and verification of computational models for analysis of the mechanical behaviour of jet engines composite components under high-velocity impact: main problems and basic recommendations

An analytical model for high velocity impacts on thin CFRPs woven laminated plates

High velocity impact performance of three-dimensional woven composites

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