High-temperature dynamic deformation of aluminum alloys using SHPB

Lee, Ouk Sub; Choi, HyeBin; Kim, Hongmin

doi:10.1007/s12206-010-1106-9

Cited by 40 publications

(13 citation statements)

References 7 publications

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“…In this paper, a modified SHPB experimental setup with the pulse shaper technique utilized on metal specimens is used to measure the dynamic deformation behaviors of bovine femur specimens taken along the longitudinal and radial direction under varying strain rate conditions [8]. Some specific outcomes showing the effects of pulse shaper thickness on the rising time of the impact wave and dynamic equilibrium state in the bovine femur specimen during a short dynamic deformation period of about 60 ㎲ are presented in detail.…”

Section: Introductionmentioning

confidence: 99%

Dynamic deformation behavior of bovine femur using SHPB

Lee

Park

2011

J Mech Sci Technol

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This paper investigates the dynamic deformation behavior of bovine femur using a modified split Hopkinson pressure bar (SHPB) with a pulse shaper technique. The shape of the incident and reflected pulses modulated by the pulse shaper were measured and compared to each other to find a suitable thickness. The experiments were carried out under varying strain rates with a selected thickness for the pulse shaper. The effect of pulse shaper thickness on the rising time, stress-strain relationship, strain rates, and front and back-end stresses during the dynamic deformation period was investigated. Experimentally-obtained data were used to find a bilinear relationship between the failure stresses and the strain rates of bovine femur specimens in both longitudinal and radial directions. The failure strains, however, linearly decreased with increasing strain rates.

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Section: Introductionmentioning

confidence: 99%

Dynamic deformation behavior of bovine femur using SHPB

Lee

Park

2011

J Mech Sci Technol

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“…It acquires the material properties of the specimen by using elastic waves with different impedance between the pressure bar (composed of the incident bar, reflected bar, and transmitted bar) and the specimen. Previous studies conducted acquisition of material properties using specimen of various materials such as concrete [ 7 ], composite [ 8 ], rubber [ 9 , 10 ] and metal [ 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Specimen Thickness on the Acquisition of Al6061-T6 Material Properties Using SHPB and Verified by FEM

Kim¹,

Kim²

2021

Materials

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The Split-Hopkinson pressure bar (SHPB), which is used for acquiring material properties at high strain rates (102–104 s−1), requires proper specimen size selection. Under the same applied pressure, an increased S-S curve is obtained as the thickness of the specimen decreases. In this study, 1.5 t, 2.0 t, 3.0 t, 5.0 t, and 7.0 t specimens of Al6061-T6 material were tested under 1.0 bar to understand the influence of specimen thickness on the acquisition of material properties. To grasp the behavior of the SHPB test in real time, Finite Element Method (FEM) was performed using the LS-DYNA program. During the SHPB test, the impedance is increased due to the variation in the specimen area. Because of the influence of impedance, the transmitted pulse increases, and the reflected pulse decreases. As a result, the specimen is deformed in the high-strain rate region, and the S-S curve is increased as the thickness decreases. In addition, by performing the test under different pressure conditions that created similar strain rate regions, the material properties remained constant with thickness variations.

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“…In recent years, researchers have studied the mechanical properties of other materials, such as A533B steel [20], 42CrMo steel [21], TWIP steel [22], 603 steel [23], 316L stainless steel [24,25], beryllium copper [26], Ti-6Al-4V alloy [27], Ti-6.6Al-3.3Mo-1.8Zr-0.29Si alloy [28], aluminum alloys [29,30], and Al-Mg-Si alloy [31] by quasi-static and SHPB tests under different strain rates and temperatures. However, there is a lack of investigation on the dynamic mechanical properties of Q345B steel under different strain rates and ambient temperatures, and there is no suitable constitutive model to describe the dynamic mechanical properties of Q345B steel material.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on mechanical behaviors of Q345B steel material over wide ranges of strain rates and temperatures

Jiang

Wang

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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In the present study, the stress-strain relationships of Q345B steel with the coupling effect of temperature and strain rate were primarily investigated. First, the quasi-static tensile test and dynamic impact compression test were performed using the 810 material test system and the split Hopkinson pressure bar device, respectively, at temperatures ranging from 25 to 700 °C and the strain rate ranging from 0.001 to 4000 s −1. Second, thermal and strain-rate effects on the mechanical behavior of Q345B steel material steel were studied. It was reported that Q345B steel can be significantly softened with temperatures and hardened with strain rates. Finally, a modified Johnson-Cook (J-C) model was developed to describe the nonlinear mechanical behavior of Q345B steel material over a wide range of strain rates and temperatures.

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High-temperature dynamic deformation of aluminum alloys using SHPB

Cited by 40 publications

References 7 publications

Dynamic deformation behavior of bovine femur using SHPB

Dynamic deformation behavior of bovine femur using SHPB

Influence of Specimen Thickness on the Acquisition of Al6061-T6 Material Properties Using SHPB and Verified by FEM

Experimental investigation on mechanical behaviors of Q345B steel material over wide ranges of strain rates and temperatures

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