Název:	Hyperplastic material model with damage for woven composites
Autoři:	Mandys, Tomáš Kroupa, Tomáš Laš, Vladislav Lobovský, Libor
Citace zdrojového dokumentu:	MANDYS, T., KROUPA, T., LAŠ, V., LOBOVSKÝ, L. Hyperplastic material model with damage for woven composites. Composites science and technology, 2019, roč. 183, č. OCT 20 2019, s. 1-10. ISSN 0266-3538.
Datum vydání:	2019
Nakladatel:	Elsevier
Typ dokumentu:	článek article
URI:	2-s2.0-85071949538 http://hdl.handle.net/11025/36437
ISSN:	0266-3538
Klíčová slova v dalším jazyce:	Elasto-plastic materialDamageHyperplasticityWoven compositeExperiment
Abstrakt v dalším jazyce:	A hyperplastic material model with damage was developed in order to describe the non-linear mechanical behaviour of woven composites. The proposed model is based on thermodynamic principles and considers the additive decomposition of logarithmic strain in accordance with assumed finite strain theory. The damage is modelled using the proposed degradation functions dependent on the relevant elastic strains. This model was implemented into the commercial FEM software Abaqus using UMAT and VUMAT subroutines. Experimental cyclic tensile and compressive static tests were performed on selected woven composites. Mathematical optimization is used for identification of material parameters of the presented model. The capability of the material model was verified by means of experiments on the specimens using geometry that provides a highly complex combination of plasticity and damage states during loading. Strain distributions were experimentally analysed using digital image correlation and the results compared with results from numerical simulations.
Práva:	Plný text není přístupný. © Elsevier
Vyskytuje se v kolekcích:	Články / Articles (NTIS) OBD

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