Abstract
Composites, due to their functional properties, are becoming more and more popular in many industries. Appropriate strength parameters are obtained by defining the warp and reinforcement constituting their structure. This article analyzes a composite consisting of polyamide reinforcement and L285 epoxy resin. The results of experimental studies have been compared with the results of computer simulation, using the finite element method (FEM). Material L285 resin has an aviation approval and it is characterized by high static and dynamic strength. The reinforcement has been made of polyamide yarns (with the Ares 20 trademark) characterized by increased breaking strength, high resistance to abrasion and the influence of external factors. The testing program assumed making standard specimens without reinforcement and specimens with reinforcement which were subjected to initial stress equal to 25% of the breaking load. Such actions made it possible to compress the resin constituting the warp and introduce, in a controlled manner, the initial load counteracting the forces coming from external loads. Reinforced specimens have been subjected to bending, determining the deflection arrow, while non-reinforced specimens (standard specimens) and polyamide yarns have been subjected to a tensile test, thanks to which their Young modules have been determined. Knowing the value of longitudinal elastic moduli and Poisson coefficients of resin and polyamide yarns (based on the literature), it was possible to assess the differences between the numerical model and real composite specimens and thus determine whether the model has been correctly made.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Internet service (access date: 01.06.2018): http://home.agh.edu.pl/~jlaska/wyklady/tw%20w%20cer/Instr1.pdf
Internet service (access date: 01.06.2018): https://www.fibreglast.com/product/about-resins/Learning_Center
Internet service (access date: 01.06.2018): http://www.havel-composites.pl/index.php?menu=produkt&id=107
Internet service (access date: 01.06.2018): http://zywice.com/laminowanie/forma
Ajdukiewicz, A., Mames, J.: Konstrukcje sprężone. Państwowe Wydawnictwo Naukowe, Warszawa (1976)
Grabiec, K., Kampioni, J.: Betonowe konstrukcje sprężone. Państwowe Wydawnictwo Naukowe, Warszawa-Poznań (1982)
Boczkowska, A., Krzesiński, G.: Kompozyty i techniki ich wytwarzania. Oficyna Wydawnicza Politechniki Warszawskiej, Warszawa (2016)
Bednarz, J., Bieleń, P.: Metody Wyznaczania modułu Younga dla materiałów elastomerowych. Autobusy—Technika, Eksploatacja, Systemy Transportowe 6, 513–517 (2017)
Marszałek, J.: Walidacja doświadczalna modelu MES kompozytu warstwowego wzmacnianego tkaniną, „Inżynier XXI wieku”: VI Międzynarodowa Konferencja Studentów oraz Doktorantów, 707–7018 (2016)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Cieślar, K., Rysiński, J. (2020). Modelling of Bending Pre-compressed Beams Made of Resin L285. In: Zawiślak, S., Rysiński, J. (eds) Engineer of the XXI Century. EngineerXXI 2018. Mechanisms and Machine Science, vol 70. Springer, Cham. https://doi.org/10.1007/978-3-030-13321-4_9
Download citation
DOI: https://doi.org/10.1007/978-3-030-13321-4_9
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-13320-7
Online ISBN: 978-3-030-13321-4
eBook Packages: Intelligent Technologies and RoboticsIntelligent Technologies and Robotics (R0)