Dynamic compaction of polyurethane foam: experiments and modelling

Dynamic compaction of polyurethane foam: experiments and modelling

The framework of this paper is to investigate the mitigation ability of an expanded rigid polyurethane foam against extremely fast (>10 6 s −1 ) and intense ( >10 GPa) dynamic loadings. Cyclic quasi-static tests and dynamic experiments (gas gun and low inductance generator) have been performed...

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Bibliographic Details
Published in:The European physical journal. ST, Special topics Vol. 227; no. 1-2; pp. 3 - 16
Main Authors: Pradel, P., Malaise, F., de Rességuier, T., Delhomme, C., Le Blanc, G., Quessada, J. H.
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-09-2018
Springer Nature B.V
EDP Sciences
Subjects:
Acoustics
Advances in the Characterization
Atomic
Automatic
Biomechanics
Chemical Sciences
Classical and Continuum Physics
Condensed Matter Physics
Elasticity
Electric power
Electromagnetism
Engineering Sciences
Experiments
Fluid mechanics
Gas guns
Inductance
Material chemistry
Materials and structures in mechanics
Materials Science
Mathematical Physics
Measurement Science and Instrumentation
Mechanics
Modeling and Simulation of Materials Subjected to High Strain Rates
Molecular
Optical and Plasma Physics
Parameter identification
Physics
Physics and Astronomy
Polymers
Polyurethane foam
Quantum Physics
Reactive fluid environment
Regular Article
Static tests
Thermics
Velocity distribution
Vibrations
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Summary:The framework of this paper is to investigate the mitigation ability of an expanded rigid polyurethane foam against extremely fast (>10 6 s −1 ) and intense ( >10 GPa) dynamic loadings. Cyclic quasi-static tests and dynamic experiments (gas gun and low inductance generator) have been performed to investigate the foam behaviour for strain rates ranging from 10 −3 to 10 5 s −1 . Analysis of the experimental results shows that the foam has an elastic behaviour phase followed by a compaction phase with significant permanent sets. Compaction threshold is about 8 MPa under quasi-static loading, and 21 MPa for strain rates above 10 4 s −1 . A porous compaction model is used to represent the macroscopic behaviour of the foam for the whole range of strain rates. The parameters are identified from dynamic experimental results. The model is validated by comparing calculated velocity profiles with an explicit hydrocode and velocity profiles measured during the experiments.
ISSN:1951-6355
1951-6401
DOI:10.1140/epjst/e2018-00116-7