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Effective elastic properties of 3D polypropylene microstructures of an injection moulded plate via different homogenization schemes
Author(s) -
Laschet Gottfried,
Baranowski Thomas,
Kashko Tanya,
Arping Tim
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110257
Subject(s) - homogenization (climate) , microscale chemistry , crystallinity , spherulite (polymer physics) , materials science , polypropylene , isotropy , composite material , microstructure , amorphous solid , nanoscopic scale , polymer , crystallography , nanotechnology , mathematics , optics , physics , chemistry , biodiversity , ecology , mathematics education , biology
The mechanical properties of a polypropylene (PP) part depend on its morphology and degree of crystallinity. To evaluate its effective elastic behaviour two upscaling schemes are developed and compared. In the 1 st method the spherulites are assumed to be isotropic and vary linearly with the spherulite diameter. In the 2 nd one, the homogenization is performed successively on two scales. At the nanoscale, the bilamina of amorphous and crystalline phases is homogenized. Then, at the microscale, a 3D radial distribution of effective bilamina is homogenized. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)