Through thickness dynamic impact response in textured Ti–6Al–4V plates

Kad, Bimal K.; Schoenfeld, Scott E.; Burkins, Matthew S.

doi:10.1016/s0921-5093(01)01135-2

Cited by 30 publications

(24 citation statements)

References 15 publications

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“…A later study by Kad et al (2002) numerically showed that the basal textures produced via rolling in the α-phase dominated microstructure (processed below β-transus) required a greater amount of work to drive localizations, compared to the transverse texture created by recrystallization above the β-transus temperature. For a detailed description of the anisotropic response of textured titanium alloy plates under ballistic conditions leading to shear plugging, refer to Kad et al (2002).…”

Section: A Numerical Study: Steel Fragment Impact On Ti-6al-4v Armor mentioning

confidence: 99%

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Implementation of Schoenfield-Wright Failure Criterion into a Three-Dimensional Adiabatic Shear Band Model in CTH

Fermen-Coker¹

2004

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Section: A Numerical Study: Steel Fragment Impact On Ti-6al-4v Armor mentioning

confidence: 99%

“…For a detailed description of the anisotropic response of textured titanium alloy plates under ballistic conditions leading to shear plugging, refer to Kad et al (2002).…”

Section: A Numerical Study: Steel Fragment Impact On Ti-6al-4v Armor mentioning

confidence: 99%

Implementation of Schoenfield-Wright Failure Criterion into a Three-Dimensional Adiabatic Shear Band Model in CTH

Fermen-Coker¹

2004

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“…[18,19] Such studies are very much needed to model the material behavior during high rate deformation events such as high-speed machining and ballistic failure, where the texture plays an important role. [20,21] In this article, we have tried to understand the texture evolution as a function of strain rate by performing quasi-static and dynamic deformations to the same strain level, at room temperature. Texture comparisons were made at three different strains by using the same specimens throughout the experiment.…”

Section: Introductionmentioning

confidence: 99%

Strain rate effect on the evolution of deformation texture for α-Fe

Bhattacharyya

Ravichandran

Rittel

2006

Metall Mater Trans A

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The effect of strain rate on the deformation texture of alpha-iron (␣-Fe) is studied at different strain levels during the deformation. Two shear compression specimens (SCS) were deformed in three consecutive stages at room temperature, one at 10 Ϫ3 /s and the other at 10 ϩ3 /s, to the same strain level. The crystallographic textures were determined using electron backscattered diffraction. The textures at each deformation stage were found to be unaffected by the wide variations in strain rate. By comparing the stress-strain curves and crystallographic texture at the two strain rate levels, it is realized that for ␣-Fe there is no marked increase in strain hardening at high strain rate with respect to quasi-static tests, so that the deformation texture remains unchanged. The temperature increase that develops at high strain rates is deemed to sharpen the texture.

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“…The behaviours of armour plates under projectile impact has been studied experimentally [1][2][3][4][5][6], using analytical/semi-empirical formulations [2,7] and numerically [8][9][10][11][12][13][14][15]. Amongst these three approaches, the numerical analysis procedure consisting of nonlinear finite element-based analysis appears to be the most versatile tool for predicting ballistic limits of projectiles for impact on armour plates.…”

Section: Introductionmentioning

confidence: 99%

“…Amongst these three approaches, the numerical analysis procedure consisting of nonlinear finite element-based analysis appears to be the most versatile tool for predicting ballistic limits of projectiles for impact on armour plates. The primary objective of the numerical studies [8][9][10][11][12][13][14][15] reported by different investigators was to show that analysis results can correlate against experimental results including failure. Most of the finite element modelling procedures discussed in literature employed plane strain or axisymmetric finite element representation of projectiles and target plates.…”

Section: Introductionmentioning

confidence: 99%

Robust prediction of residual velocities and ballistic limits of projectiles for impact on thin aluminium plates

Raguraman¹,

Deb²

2006

WIT Transactions on the Built Environment, Vol 87

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This paper deals with the simulation-driven study of the impact of hardened steel projectiles on thin aluminium target plates using explicit finite element analysis as implemented in LS-DYNA. The evaluation of finite element modelling includes a comprehensive mesh convergence study using shell elements for representing target plates and the solid element-based representation of ogivalnosed projectiles. A user-friendly automatic contact detection algorithm is used for capturing interaction between the projectile and the target plate. It is shown that the proper choice of mesh density and strain rate-dependent material properties is crucial as these parameters significantly affect the computed residual velocity. The efficacy of correlation with experimental data is adjudged in terms of a 'correlation index' defined in the present study for which values close to unity are desirable. By simulating laboratory impact tests on thin aluminium plates carried out by earlier investigators, extremely good prediction of experimental ballistic limits has been observed with correlation indices approaching unity. Additional simulation-based parametric studies have been carried out and results consistent with test data have been obtained. The simulation procedures followed in the present study can be applied with confidence in designing thin aluminium armour plates for protection against low calibre projectiles.

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Through thickness dynamic impact response in textured Ti–6Al–4V plates

Cited by 30 publications

References 15 publications

Implementation of Schoenfield-Wright Failure Criterion into a Three-Dimensional Adiabatic Shear Band Model in CTH

Implementation of Schoenfield-Wright Failure Criterion into a Three-Dimensional Adiabatic Shear Band Model in CTH

Strain rate effect on the evolution of deformation texture for α-Fe

Robust prediction of residual velocities and ballistic limits of projectiles for impact on thin aluminium plates

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