Published:
Czech Technical University in Prague - Central Library, 2021
Published in:
Acta Polytechnica CTU Proceedings, 30 (2021), Seite 114-120
Language:
Without Specification
DOI:
10.14311/app.2021.30.0114
ISSN:
2336-5382
Origination:
Footnote:
Description:
This paper examines the possibility of using the Mori-Tanaka micromechanical model describe the rate dependent behavior of the polymer matrix based fibrous composites. The generalized Leonov model is adopted to capture the time and rate dependent character of the selected matrix, while fibers are assumed elastic. The performance of the Mori-Tanaka method is tested against the finite element simulations carried out in the framework of first-order homogenization. For simplicity, the periodichexagonal array model is chosen to represent the microstructural arrangement of fibers in the yarn cross-section. To match the predictions provided by the two approaches a suitable modification to the original Mori-Tanaka method is proposed. An extensive parametric study is presented to illustrate a considerable improvement of the predictive capability of the modified Mori-Tanaka method.