Modelling of linear elasticity and viscoelasticity of thermosets and unidirectional glass fibre-reinforced thermoset-matrix composites. Part 1, Theory of modelling

• Autorzy: Klasztorny, Marian , Nycz, Daniel B.
• Języki publikacji: EN

Abstrakty

EN

The paper presents advanced analytical modelling of the linear elasticity and viscoelasticity of thermosets and unidirectional long glass fibre-reinforced thermoset-matrix (UFRT) composites. New non-aging materials fully relaxed after the curing and post-curing processes are considered. Quasi-static long-term isothermal reversible viscoelastic processes under normal conditions are modelled. The thermosets are isotropic materials with viscoelastic shear strains and elastic bulk strains, and the fibres are isotropic and elastic. New rheological models for thermosets and UFRT composites, described by the smallest possible number of material constants, are developed. The viscoelastic generic function for shear/quasi-shear stresses is assumed as the Mittag-Leffler fractional exponential function in an integral form. The thermoset is described by two elastic and three viscoelastic parameters. The homogenized UFRT composite is described by five elastic and five viscoelastic parameters. Conjugated/unconjugated standard/inverse constitutive equations of the linear elasticity/elasticity-viscoelasticity governing thermosets and UFRT composites are formulated. The equations are mutually analytically transformable.

Słowa kluczowe

PL

materiał termoutwardzalny; jednokierunkowy kompozyt wzmocniony włóknem szklanym z osnową termoutwardzalną; modelowanie reologiczne; równania konstytutywne sprężystości liniowej-lepkosprężystości; modelowanie analityczne

EN

thermoset; unidirectional glass fibre-reinforced thermoset-matrix composite; rheological modelling; constitutive equations of linear elasticity-viscoelasticity; analytical modelling

• Czasopismo: Composites Theory and Practice
• Rocznik: 2022
• Tom: R. 22, nr 1
• Strony: 3--15
• Opis fizyczny: Bibliogr. 42 poz.

Twórcy

autor

Klasztorny, Marian

• Professor Emeritus in Civil and Mechanical Engineering,

autor

Nycz, Daniel B.

• Institute of Technology, Jan Grodek State University in Sanok, ul. A. Mickiewicza 21, 38-500 Sanok, Poland

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).