Plastic deformation of 2024-T351 aluminum plate over a wide range of loading conditions

Seidt, Jeremy D.; Gilat, Amos

doi:10.1016/j.ijsolstr.2013.02.006

Cited by 117 publications

(56 citation statements)

References 16 publications

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“…Their study showed that the strain rate sensitivity increases with increasing temperature, which is in agreement with our observations and has been seen by other studies on aluminum and aluminum alloys [18]. The higher rate sensitivity at higher temperatures is usually attributed to viscous drag mechanisms that occur at the higher strain rates, which implies there are several deformation mechanisms that are operating and dominant under different regimes of strain rate and temperature.…”

Section: Resultssupporting

confidence: 92%

Modeling the effect of laser heating on the strength and failure of 7075-T6 aluminum

Florando

Margraf

Reus

et al. 2015

Materials Science and Engineering: A

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a b s t r a c tThe effect of rapid laser heating on the response of 7075-T6 aluminum has been characterized using 3-D digital image correlation and a series of thermocouples. The experimental results indicate that as the samples are held under a constant load, the heating from the laser profile causes non-uniform temperature and strain fields, and the strain-rate increases dramatically as the sample nears failure. Simulations have been conducted using the LLNL multi-physics code ALE3D, and compared to the experiments. The strength and failure of the material was modeled using the Johnson-Cook strength and damage models. In order to capture the response, a dual-condition criterion was utilized which calibrated one set of parameters to low temperature quasi-static strain rate data, while the other parameter set is calibrated to high temperature high strain rate data. The thermal effects were captured using temperature dependent thermal constants and invoking thermal transport with conduction, convection, and thermal radiation.

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Section: Resultssupporting

confidence: 92%

Modeling the effect of laser heating on the strength and failure of 7075-T6 aluminum

Florando

Margraf

Reus

et al. 2015

Materials Science and Engineering: A

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“…It was observed experimentally [16] that the quasi-static true stress-true strain curves, both in tension and shear for 2024-T351 aluminum alloy [25], 6061-T6 aluminum alloy [26,27], OFHC copper [28][29][30][31], 4340 steel [1], Ti-6Al-4V alloys [6,32,33] and Q235 mild steel [8,34], are not identical, implying that the mechanical behavior of these six materials does not obey the von Mises flow rule and its associated flow rule. In other words, the mechanical behavior of these examined metals is sensitive to the state of stress.…”

Section: Quasi-static True Stress-true Strain Relationshipmentioning

confidence: 99%

A new Dynamic Plasticity and Failure Model for Metals

Lin

Wen

2019

Metals

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A new plasticity and failure model is developed herein for metallic materials subjected to dynamic loadings on the basis of the analysis of some available material test data and previous work. The new model consists of two parts: a strength model and a failure criterion. The strength model takes into consideration both tension and shear stress-strain relationships, as well as the effect of Lode angle, while the failure criterion takes into account both the effects of stress triaxiality and Lode angle. Furthermore, the effects of strain rate and temperature are also catered for in the model. In particular, new non-linear functions are suggested for the effects of strain rate and temperature in the strength model in order to describe accurately the mechanical behavior of metallic materials at very high loading rates and temperature. The new model is compared with available material test data for 2024-T351 aluminum alloy, 6061-T6 aluminum alloy, oxygen free high conductivity (OFHC) copper, 4340 steel, Ti-6Al-4V alloys, and Q235 mild steel in terms of stress–strain curves in both tension and shear, strain rate effect, temperature effect and fracture under different loading conditions. The new model is also compared with the JC constitutive model with the respective JC and BW fracture criteria by conducting numerical simulations of quasi-static smooth and notched bar tensile tests and ballistic perforation tests on 2024-T351 aluminum alloy in terms of cup and cone failure pattern, ballistic limit, residual velocity and failure mode. It transpires that the new plasticity and failure model can be used to predict the response and failure of metallic materials and structures under different loading conditions. It also transpires that the new model is advantageous over the existing models.

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“…It was reported by many authors [30,31] that the 2024-T3 aluminum alloy is complex and careful modelling of its response anisotropic and/or pressure and Lode angle parameter depends on yield functions that must be utilized. Meanwhile, some authors (Lesuer [32]) claimed that stress-strain behaviour of the 2024-T3 alloy is isotropic and insensitive to mean stress.…”

Section: Constitutive Model For the Aluminum Skin Sheetmentioning

confidence: 99%

Impact perforation of sandwich panels with aluminum foam core: A numerical and analytical study

Elnasri

Zhao

2016

International Journal of Impact Engineering

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Plastic deformation of 2024-T351 aluminum plate over a wide range of loading conditions

Cited by 117 publications

References 16 publications

Modeling the effect of laser heating on the strength and failure of 7075-T6 aluminum

Modeling the effect of laser heating on the strength and failure of 7075-T6 aluminum

A new Dynamic Plasticity and Failure Model for Metals

Impact perforation of sandwich panels with aluminum foam core: A numerical and analytical study

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