Modeling of fiberglass degradation process under stresses and alkaline environment

R.A. Kayumova∗, I.Z. Mukhamedovaa∗∗, B.F. Tazyukovb∗∗∗

aKazan State University of Architecture and Engineering, Kazan, 420043 Russia

bKazan Federal University, Kazan, 420008 Russia

E-mail: ∗Kayumov@rambler.ru, ∗∗Muhamedova-inzilija@mail.ru, ∗∗∗Bulat.Tazioukov@kpfu.ru

Received April 12, 2022

 

ORIGINAL ARTICLE

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DOI: 10.26907/2541-7746.2022.2-3.194-205

For citation: Kayumov R.A., Mukhamedova I.Z., Tazyukov B.F. Modeling of fiberglass degradation process under stresses and alkaline environment. Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, 2022, vol. 164, no. 2–3, pp. 194–205. doi: 10.26907/2541-7746.2022.2-3.194-205. (In Russian)

 

 

Abstract

The constitutive relations for fiberglass were obtained. New methods were developed to analyze its behavior as microdamage accumulates and under the exposure to an aggressive alkaline environment. A finite element model was built to assess the stress-strain state of a fiberglass panel for predicting its durability in response to stresses and an alkaline environment. The convergence of the solutions was studied depending on the number of finite elements and the time step. The behavior of a fiberglass panel was analyzed with and without considering its deformations. The results show that the damage accumulated in a fiberglass panel must be taken into account to improve its durability.

Keywords: fiberglass, technique, finite element model, durability, alkaline environment, damage parameter, numerical experiment

Acknowledgments. This study was supported by the Kazan Federal University Strategic Academic Leadership Program (PRIORITY-2030).

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