New devices to capture the temperature effect under dynamic compression and impact perforation of polymers, application to PMMA

Rusinek, Alexis; Bernier, Richard; Boumbimba, Rodrigue Matadi; Klósak, Maciej; Jankowiak, Tomasz; Voyiadjis, G. Z.

doi:10.1016/j.polymertesting.2017.10.015

Cited by 26 publications

(20 citation statements)

References 25 publications

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“…On the other hand, testing at a higher temperature is extremely difficult since the bar alloy also experiences degradation of its mechanical properties due to high temperature. More details concerning the development of the experimental device are reported in [25]. Figure 3 shows some of the dynamic compression stress-strain curves obtained from the tests.…”

Section: Dynamic Compression Testingmentioning

confidence: 99%

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Rodríguez-Millán

Díaz-Álvarez

Bernier

et al. 2017

Metals

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Abstract:Ni-based superalloys are extensively used in high-responsibility applications in components of aerospace engines and gas turbines with high temperature service lives. The wrought, γ'-strengthened superalloy Haynes 282 has been recently developed for applications similar to other common superalloys, such as Waspaloy or Inconel 718, with improved creep behavior, thermal stability, and fabrication ability. Despite the potential of Haynes 282, there are still important gaps in the knowledge of the mechanical behavior of this alloy. In fact, it was not possible to find information concerning the mechanical behavior of the alloy under impulsive loading. This paper focuses on the mechanical characterization of the Haynes 282 at strain rates ranging from 0.1 to 2800 s −1 and high temperatures ranging from 293 to 523 K using Hopkinson bar compression tests. The experimental results from the thermo-mechanical characterization allowed for calibration of the Johnson-Cook model widely used in modeling metallic alloy's responses under dynamic loading. Moreover, the behavior of Haynes 282 was compared to that reported for Inconel 718, and the results were used to successfully model the orthogonal cutting of Haynes 282, being a typical case of dynamic loading requiring previous characterization of the alloy.

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Section: Dynamic Compression Testingmentioning

confidence: 99%

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Rodríguez-Millán

Díaz-Álvarez

Bernier

et al. 2017

Metals

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“…High temperature experiments under dynamic conditions were carried out using a specific furnace heating the specimen and the bar ends. This furnace is similar to the one used by Rusinek et al [21]. A description of this apparatus is given in Figure 2.…”

Section: Experiments At Various Temperaturesmentioning

confidence: 99%

“…Description (adapted from[21]) (a) and picture (b) of the furnace used for high temperature dynamic compression tests.…”

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confidence: 99%

Material Behavior Description for a Large Range of Strain Rates from Low to High Temperatures: Application to High Strength Steel

Simon

Demarty

Rusinek

et al. 2018

Metals

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Current needs in the design and optimization of complex protective structures lead to the development of more accurate numerical modelling of impact loadings. The aim of developing such a tool is to be able to predict the protection performance of structures using fewer experiments. Considering only the numerical approach, the most important issue to have a reliable simulation is to focus on the material behavior description in terms of constitutive relations and failure model for high strain rates, large field of temperatures and complex stress states. In this context, the present study deals with the dynamic thermo-mechanical behavior of a high strength steel (HSS) close to the Mars ® 190 (Industeel France, Le Creusot, France). For the considered application, the material can undergo both quasi-static and dynamic loadings. Thus, the studied strain rate range is varying from 10 −3 -10 4 s −1 . Due to the fast loading time, the local temperature increase during dynamic loading induces a thermal softening. The temperature sensitivity has been studied up to 473 K under quasi-static and dynamic conditions. Low temperature measurements (lower than the room temperature) are also reported in term of σ − ε|˙ε ,T curves. Experimental results are then used to identify the parameters of several constitutive relations, such as the model developed initially by Johnson and Cook; Voyiadjis and Abed; and Rusinek and Klepaczko respectively termed Johnson-Cook (JC), Voyiadjis-Abed (VA), and Rusinek-Klepaczko (RK). Finally, comparisons between experimental results and model predictions are reported and compared.Nevertheless, in numerical models, constitutive relations are used to describe the material mechanical behavior and consequently have a strong influence on interpretation of the results. Therefore, reliability of these models is essential. These material constitutive relations usually represent the equivalent plastic stress σ of a material as a function of the equivalent plastic strain ε p , strain ratė ε p , and temperature T. Many relations have been developed through recent decades and are still under consideration. One can distinguish two main types of constitutive relations. The first ones are phenomenological, as they do not take into account any physical phenomenon and are only based on experimental observations. These relations have the main advantage of having a low number of constants. Nevertheless, their validity is reduced to a limited range of conditions in term of strain rate and temperature. A well-known and widely implemented in finite element (FE) codes is the Johnson-Cook constitutive model [4]. Johnson and Cook used a phenomenological model that is widely used in most applications for predicting the behavior of the flow stress at different strain rates and temperatures. In this model, the strain rate and temperature effects on the flow stress are uncoupled which implies that the strain rate sensitivity is independent of temperature which is in contrast to that observed by most metals. It is an empirical e...

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“…A constant volume was then heated to an initial temperature

. This volume was greater than the chamber volume where the specimen was wedged within the two bars of Hopkinson, Figure 6 c [ 38 , 39 ]. To maintain a constant temperature in the specimen chamber, a fan was used to effuse out the needed hot air stream.…”

Section: Description Of the Specimen And Hopkinson Bar Device Usinmentioning

confidence: 99%

Dynamic Behavior of Aluminum Alloy Aw 5005 Undergoing Interfacial Friction and Specimen Configuration in Split Hopkinson Pressure Bar System at High Strain Rates and Temperatures

et al. 2020

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In this paper, experimental and numerical results of an aluminum alloy’s mechanical behavior are discussed. Over a wide range of strain rates (10−4 s−1 ≤ έ ≤ 103 s−1) the influence of the loading impact, velocity and temperature on the dynamic response of the material was analyzed. The interface friction effect on the material’s dynamic response is examined using a split Hopkinson pressure bar (SHPB) in a high temperature experiment using finite element analysis (FEA). The effect of different friction conditions between the specimen and the transmitted/incident bars in the SHPB system was examined using cylinder bulk specimens and cylinder plates defined with four-layer configurations. The results of these tests alongside the presented numerical simulations allow a better understanding of the phenomenon and reduces (minimizes) errors during compression tests at high and low strain rates with temperatures ranging from 21 to 300 °C.

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New devices to capture the temperature effect under dynamic compression and impact perforation of polymers, application to PMMA

Cited by 26 publications

References 25 publications

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Material Behavior Description for a Large Range of Strain Rates from Low to High Temperatures: Application to High Strength Steel

Dynamic Behavior of Aluminum Alloy Aw 5005 Undergoing Interfacial Friction and Specimen Configuration in Split Hopkinson Pressure Bar System at High Strain Rates and Temperatures

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