Strength of composite yarn under biaxial loading

0507116 - ÚTAM 2020 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Valentová, S. - Hrbek, Vladimír - Vorel, J. - Šejnoha, M.
Strength of composite yarn under biaxial loading.
Acta Polytechnica CTU Proceedings. Vol. 15. Prague: Czech Technical University in Prague, 2018 - (Padevět, P.), s. 131-136. ISBN 978-80-01-06457-3. E-ISSN 2336-5382.
[Conference Nano and Macro Mechanics 2018 /9./. Prague (CZ), 20.09.2018-20.09.2018]
Institucionální podpora: RVO:68378297
Klíčová slova: composite yarn * periodic unit cell * strength * damage analysis * failure envelope
Obor OECD: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
https://doi.org/10.14311/APP.2018.15.0131

The present paper is concerned with two types of periodic unit cell of composite yarn with different geometry but the same material properties. Their macroscopic response under tensile and compressive loading in the transverse direction and their combination are plotted in the graphs. Based on stress-strain curves the failure envelopes are constructed. A simple maximum stress criterion and linear softening law is used in the adopted progressive damage analysis to outline the softening part of stress-strain diagrams. Finally the impact of selected representative volume element is observed through the comparison of results gained for both designed periodic unit cells in the microlevel, meaning the level of yarn.
Trvalý link: http://hdl.handle.net/11104/0298179