Characterization of the viscoelastic behaviour of a plastic-bonded explosive

Picart, Didier; Brigolle, J.L.

doi:10.1016/j.msea.2010.08.057

Cited by 10 publications

(12 citation statements)

References 5 publications

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“…Being viscoelastic, the binder (and correspondingly the whole sample) will flow to relieve these internal stresses. Such differential behaviour was also anticipated by Picart [6].…”

Section: Resultssupporting

confidence: 76%

On the thermal expansion hysteresis of a UK PBX

Williamson¹,

Palmer²,

Leppard³

et al. 2012

AIP Conference Proceedings

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Abstract. The linear coefficient of thermal expansion of a UK PBX has been measured over the temperature range -40 to +80 °C: (5.55 ± 0.05) ×10 -5 K -1 . A subtle but measurable hysteresis in length as a function of temperature was observed. This is attributed to a mismatch between the thermal expansion coefficients of its solid-fill and binder constituents. On heating or cooling this induces mechanical stresses within the binder system, which being viscous it can flow to relieve. A change in sample temperature results in an asymptotic relaxation to a mechanical equilibrium length. This is analogous to the type of stress relaxation and creep behaviour normally associated with the bulk response of viscoelastic materials when more conventional stresses are applied.

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“…Being viscoelastic, the binder (and correspondingly the whole sample) will flow to relieve these internal stresses. Such differential behaviour was also anticipated by Picart [6].…”

Section: Resultssupporting

confidence: 76%

On the thermal expansion hysteresis of a UK PBX

Williamson¹,

Palmer²,

Leppard³

et al. 2012

AIP Conference Proceedings

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“…The mechanical properties of I1 are quite similar to those of energetic materials [17,[27][28]. Recovered targets showed similar trends on the mechanical response of inert and energetic materials (Figure 3).…”

Section: Introductionmentioning

confidence: 70%

Dynamic behavior of an aggregate material at simultaneous high pressure and strain rate: SHPB triaxial tests

Bailly

Delvare

Vial

et al. 2011

International Journal of Impact Engineering

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International audienceLow velocity impacts on energetic materials induce plastic deformations and sliding friction which can lead to ignition. If some ignition criteria have been proposed, the remaining difficulty is to characterize the mechanical behavior of the material when submitted to the corresponding solicitations (high pressure and high strain rate). Thus, a technique based on the Split Hopkinson Pressure Bars system is proposed to carry out a triaxial compression test. A cylindrical specimen is placed into a confining ring and is compressed by the system of bars. The ring prevents the radial extension of the specimen and creates a lateral confining pressure. The material and dimensions chosen for the ring maintain a constant radial pressure during the test. Some tests were carried out on an inert aggregate material and proved the validity of this experimental device. The experimental data processing shows the influence of both the pressure and the strain rate. The shear stresses, which contribute to thermal dissipation and then to the ignition threshold, increase according to the pressure

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“…Since 2000, the CEA and the Gabriel LaMé Laboratory have undertaken an extensive experimental campaign to characterize the various behavioral features of the material M1. This database includes monotonic and cyclic compressions at 20°C and under atmospheric pressure, for four strain rates from 10 -6 s -1 to 10 -3 s -1 ; monotonic and cyclic compressions at 20°C under 5 and 10 MPa, at 10 -5 s -1 ; monotonic and cyclic tension tests at 0°C, 20°C, 35°C and 50°C under atmospheric pressure, at 10 -5 s -1 (Benelfellah, 2013;Caliez et al, 2014;Gratton et al, 2009;Le, 2007;Le et al, 2010;Picart and Brigolle, 2010;Rja Fi Allah, 2006); cyclic compressions at 0°C, 35°C and 50°C under atmospheric pressure, at 10 -5 s -1 (Le, 2007); heterogeneous tests such as the Brazilian test, biaxial tension (plate bending), channel-die test, Iosipescu test and three-point bending, at 20°C under atmospheric pressure, at a strain rate of about 10 -5 s -1 (Benelfellah, 2013;Le, 2007;Picart and Pompon, 2016); alternate tension-compression and compression-tension at 20°C under atmospheric pressure, at 10 -5 s -1 (Benelfellah, 2013; Picart and Brigolle, 2010); as well as a dynamic mechanical analysis (DMA) campaign (Picart and Brigolle, 2010). For each uniaxial or triaxial test of these papers, the longitudinal and transversal strains are given.…”

Section: Hmx-based Pbxsmentioning

confidence: 99%

Quasistatic mechanical behavior of HMX- and TATB-based plastic-bonded explosives

Plassart

Picart

Gratton

et al. 2020

Mechanics of Materials

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Characterization of the viscoelastic behaviour of a plastic-bonded explosive

Cited by 10 publications

References 5 publications

On the thermal expansion hysteresis of a UK PBX

On the thermal expansion hysteresis of a UK PBX

Dynamic behavior of an aggregate material at simultaneous high pressure and strain rate: SHPB triaxial tests

Quasistatic mechanical behavior of HMX- and TATB-based plastic-bonded explosives

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