U-0.75Ti and Ti-6Al-4V in Planar and Ballistic Impact Experiments

B. Herrmann; A. Venkert; V. Favorsky; D. Shvarts; E. Zaretsky

doi:10.1063/1.1780305

U-0.75Ti and Ti-6Al-4V in Planar and Ballistic Impact Experiments

B. Herrmann, A. Venkert, V. Favorsky, D. Shvarts, E. Zaretsky

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The response of U and Ti alloys has been studied in planar and ballistic impact experiments performed with a 25 mm light-gas gun. Free surface velocities were monitored by VISAR. The velocity profiles and the damage maps were simulated using 2D AUTODYN™ finite differences code. A modified Steinberg-Cochran-Guinan constitutive model was calibrated by simulating planar impact experiments. Bauschinger effect and a single-parameter spall model were added to describe the unloading and the tensile paths. The ballistic experiments were simulated by using the calibrated model. Softly recovered samples revealed different degrees of spall fracture (planar impact) and of adiabatic shear bands (ballistic experiments). The results demonstrate a possibility to combine experimental and numerical techniques, VISAR and AUTODYN, to calibrate constitutive models of solids in a wide range of shock-induced strain.

Original language	English
Pages (from-to)	577-580
Journal	AIP Conference Proceedings
Volume	706
Issue number	1
DOIs	https://doi.org/10.1063/1.1780305
State	Published - 1 Jul 2004

Keywords

Metals semimetals and alloys
High-pressure and shock wave effects in solids and liquids
Deformation and plasticity
Fatigue brittleness fracture and cracks
Ballistics
Mechanical testing impact tests static and dynamic loads

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10.1063/1.1780305

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title = "U-0.75Ti and Ti-6Al-4V in Planar and Ballistic Impact Experiments",

abstract = "The response of U and Ti alloys has been studied in planar and ballistic impact experiments performed with a 25 mm light-gas gun. Free surface velocities were monitored by VISAR. The velocity profiles and the damage maps were simulated using 2D AUTODYN{\texttrademark} finite differences code. A modified Steinberg-Cochran-Guinan constitutive model was calibrated by simulating planar impact experiments. Bauschinger effect and a single-parameter spall model were added to describe the unloading and the tensile paths. The ballistic experiments were simulated by using the calibrated model. Softly recovered samples revealed different degrees of spall fracture (planar impact) and of adiabatic shear bands (ballistic experiments). The results demonstrate a possibility to combine experimental and numerical techniques, VISAR and AUTODYN, to calibrate constitutive models of solids in a wide range of shock-induced strain.",

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AU - Herrmann, B.

AU - Venkert, A.

AU - Favorsky, V.

AU - Shvarts, D.

AU - Zaretsky, E.

PY - 2004/7/1

Y1 - 2004/7/1

N2 - The response of U and Ti alloys has been studied in planar and ballistic impact experiments performed with a 25 mm light-gas gun. Free surface velocities were monitored by VISAR. The velocity profiles and the damage maps were simulated using 2D AUTODYN™ finite differences code. A modified Steinberg-Cochran-Guinan constitutive model was calibrated by simulating planar impact experiments. Bauschinger effect and a single-parameter spall model were added to describe the unloading and the tensile paths. The ballistic experiments were simulated by using the calibrated model. Softly recovered samples revealed different degrees of spall fracture (planar impact) and of adiabatic shear bands (ballistic experiments). The results demonstrate a possibility to combine experimental and numerical techniques, VISAR and AUTODYN, to calibrate constitutive models of solids in a wide range of shock-induced strain.

AB - The response of U and Ti alloys has been studied in planar and ballistic impact experiments performed with a 25 mm light-gas gun. Free surface velocities were monitored by VISAR. The velocity profiles and the damage maps were simulated using 2D AUTODYN™ finite differences code. A modified Steinberg-Cochran-Guinan constitutive model was calibrated by simulating planar impact experiments. Bauschinger effect and a single-parameter spall model were added to describe the unloading and the tensile paths. The ballistic experiments were simulated by using the calibrated model. Softly recovered samples revealed different degrees of spall fracture (planar impact) and of adiabatic shear bands (ballistic experiments). The results demonstrate a possibility to combine experimental and numerical techniques, VISAR and AUTODYN, to calibrate constitutive models of solids in a wide range of shock-induced strain.

KW - Metals semimetals and alloys

KW - High-pressure and shock wave effects in solids and liquids

KW - Deformation and plasticity

KW - Fatigue brittleness fracture and cracks

KW - Ballistics

KW - Mechanical testing impact tests static and dynamic loads

U2 - 10.1063/1.1780305

DO - 10.1063/1.1780305

M3 - Article

SN - 0094-243X

VL - 706

SP - 577

EP - 580

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

IS - 1

ER -

U-0.75Ti and Ti-6Al-4V in Planar and Ballistic Impact Experiments

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Keywords

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