A non-linear orthotropic hydrocode model for ultra-high molecular weight polyethylene in impact simulations
This paper presents detailed experimental characterization of quasi-static anisotropic directional strength properties as well as the shock behavior of ultra-high molecular weight polyethylene (UHMWPE) for the development of an advanced material model for this class of materials. Specifically, we co...
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Veröffentlicht in: | International journal of impact engineering 2015-01, Vol.75, p.110-122 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | This paper presents detailed experimental characterization of quasi-static anisotropic directional strength properties as well as the shock behavior of ultra-high molecular weight polyethylene (UHMWPE) for the development of an advanced material model for this class of materials. Specifically, we consider Dyneema® HB26 – pressed from uni-directional (UD) tapes in a 0/90° stacking sequence. A material model based on a constitutive law with orthotropic, non-linear strength, shock response, composite failure and softening criteria is presented. A set of material parameters is derived for applications in hydrocodes (here: ANSYS AUTODYN). High- and hypervelocity impact tests with different impact velocities are used for preliminary validation and discussion of the predictive capabilities in view of future application.
•Test methods for a full experimental characterization of a UHMWPE composite.•Quasi-static and dynamic testing of a UHMWPE composite.•Hypervelocity impact experiments on a UHMWPE composite.•Predictive modeling of a UHMWPE under ballistic impact.•Non-linear material model including elasticity, plasticity, failure and softening. |
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ISSN: | 0734-743X 1879-3509 |
DOI: | 10.1016/j.ijimpeng.2014.07.004 |