Material behaviour of polymers under impact loading

The intention of this paper is to give a comparative review of material models for polymers with special focus on crashworthiness analysis. An outline of polymers classified as incompressible elastomers, compressible foams and thermoplastics is shown. Elastomers and recoverable foams are based on th...

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Bibliographic Details
Published in:International journal of impact engineering 2006-05, Vol.32 (5), p.725-740
Main Authors: Bois, P.A. Du, Kolling, S., Koesters, M., Frank, T.
Format: Article
Language:English
Subjects:
Applied sciences
Crash simulation
Elastomers
Exact sciences and technology
Explicit finite elements
Foams
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Inelasticity (thermoplasticity, viscoplasticity...)
Material modelling
Metals. Metallurgy
Pedestrian protection
Physics
Short-time dynamics
Solid mechanics
Structural and continuum mechanics
Thermoplastics
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Summary:The intention of this paper is to give a comparative review of material models for polymers with special focus on crashworthiness analysis. An outline of polymers classified as incompressible elastomers, compressible foams and thermoplastics is shown. Elastomers and recoverable foams are based on the same theoretical description: hyperelasticity. We present a material law that allows fast generation of input data based on uniaxial static and dynamic tensile tests at different strain rates. For thermoplastics, we give a short overview of suitable material laws and show how we can characterize approximately their behaviour by using metal plasticity. Using pedestrian protection as an example, we demonstrate some typical applications of polymer modelling in crash simulation. Furthermore, we investigate the deformation behaviour of a Hardy disk during a frontal offset impact.
ISSN:0734-743X
1879-3509
DOI:10.1016/j.ijimpeng.2005.02.007