The improvement of the rheological model for controlling the stress-strain state and humidity in the materials of museum pieces: zener thermodiffusion model for capillary-porous bodies

• Autorzy: Dovhaliuk V. B. , Chovnyuk Y. V. , Ivanov E. A. , Shyshyna M. O.

Identyfikatory

DOI

10.30657/qpi.2019.11.05

• Języki publikacji: EN

Abstrakty

EN

The drying and humidifying processes of capillary-porous (colloid) bodies occur during the production of various materials for the consumer goods industry, building materials, storage of museum pieces, etc. It is known that the main linkage forms of the moisture and colloid capillary-porous bodies (CCPBs), namely adsorption, capillary condensation and capillary linkage of the free moisture in the cavities of the above bodies, depend on the temperature and relative humidity of drying/humidifying agent. It means that the CCPBs behave in a peculiar way depending on the temperature and humidity fields. The problems of CCPBs drying (or humidifying) process include the issue of the heat and humidity transfer both in the middle of the body and in the boundary layer on the interface of phases “body (object of drying/humidifying process) – environment”. The drying/humidifying intensity is at its maximum when the possibilities of the heat and mass transfer in the boundary layer correspond to the possibilities of moisture and heat moving inside the object of drying/humidifying process. The properties of the CCPB as material possessing specific elastic-viscous properties are described within the framework of O.Y. Ishlinskiy - O.R. Rzhanitsin generalized elastic-viscous body theory. A comparative analysis of the above mentioned CCPB’s properties from the point of view of Zener thermodiffusion theory is conducted. The mechanism of moisture transferring from the CCPBs’ central layers (as object of drying/humidifying process) up to their surfaces is developed. The theoretical researches examined the drying/humidifying phenomena for both the entire volume of the CCPB and three structural directions. It is noted that drying/humidifying of CCPBs is a complicated heat and mass transfer process accompanied by mechanisms of molecular nature determining the kinetics of their running. It is shown that the appropriate equations’ solution of molecular-molar heat and moisture transfer under the appropriate boundary (limit) conditions allows to describe the fields, i.e. the distribution of transfer potentials (the temperature and moisture content in the CCPB as object of drying/humidifying) at any time of the appropriate process. The drying/humidifying curves (“drying/humidifying rate versus CCPB humidity”) and the temperature curves (“CCPB temperatures versus CCPB humidity”) reflect the nature of the drying/humidifying processes. In the framework of the proposed generalized rheological model of CCPB, the residual deformations of bodies for various load types (the time-varying stress applied to the CCPB) is estimated.

Słowa kluczowe

EN

aftereffect; colloid capillary-porous bodies; deformations; heat and mass transfer; Ishlinskiy - Rzhanitsin generalized rheological model of the elastic-viscous body; Zener thermodiffusion rheological model

PL

model reologiczny; model termodyfuzji Zenera; ciało kapilarno-porowate; transfer ciepła; transfer masy

• Wydawca: Oficyna Wydawnicza Stowarzyszenia Menedżerów Jakości i Produkcji
• Czasopismo: Zeszyty Naukowe. Quality. Production. Improvement
• Rocznik: 2019
• Tom: No. 2 (11)
• Strony: 51--71
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Dovhaliuk V. B.

• Kyiv National University of Construction and Architecture, Kyiv, Ukraine

autor

Chovnyuk Y. V.

• National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine

autor

Ivanov E. A.

• National Aviation University, Kyiv, Ukraine

autor

Shyshyna M. O.

• Kyiv National University of Construction and Architecture, Kyiv, Ukraine

Bibliografia

• [1.] O.Y. Ishlinskiy, “Applied Mathematics and Mechanics.” vol. 4, iss. 1, 1940.
• [2.] O.R. Rzhanitsin, Nekotorye voprosy mekhaniki sistem, deformiruyushchikhsya vo vremeni [Some Issues of Systems’ Mechanics Deforming in Time], Gostekhoretizdat, Moskow, 1949 (in Russian).
• [3.] E.S. Sorokin, “K teorii vnutrennego treniya pri kolebaniyakh uprugikh sistem,” [To the Theory of Internal Friction during Elastic Systems Vibrations] TsNIISK, Moskow, 1960, p. 132 (in Russian).
• [4.] Uprugost' i neuprugost' metallov. Sbornik perevodov. [Elasticity and Non-elasticity of Metals. Translations Collection], Inostrannoi literatury Publ., Moskow, 1960 (in Russian).
• [5.] Zener C. “The Physical Review,” V.52, No. 3, 1937, p. 230.
• [6.] L.D. Landau and E.M. Lifshitz, Mekhanika sploshnykh sred [Continuum Mechanics], Gostekhizdat, Moskow, 1953.
• [7.] A.V. Lykov, Teoriya teploprovodnosti [Theory of Heat Conduction], Vysshaya shkola, Moskow, 1967, p. 599 (in Russian).
• [8.] І.M. Ozarkіv et al., Kontrol' napruzheno-deformovanogo stanu і vologostі derevyny v teplomasoobmіnnikh protsesakh sushіnnya [Control of Tense-Deformed State and Moisture of Wood in Heat and Mass Transfer during Drying Process], Scientific Bulletin of UNFU, vol. 28, no 10, 2018, pp. 81-84 (in Ukrainian).
• [9.] A.V. Lykov, Teoriya sushki [Theory of drying], Energoizdat, Moskow-Leningrad, 1963, p. 417 (in Russian).
• [10.] A.V. Kiselev and V.M. Dreving, ed., Eksperimental'nye metody v adsorbtsyi i molekulyarnoy khromatografii [Experimental Methods in Adsorption and Molecular Chromatography], MGU Publ., Moskow, 1973, p. 447 (in Russian).
• [11.] S. J. Gregg and K. S. W. Sing, Adsorbtsiya, udel'naya poverkhnost', poristost' [Adsorption, Surface Area and Porosity], (Transl. from English), 2nd ed., Mir Publ., Moskow, 1984, p. 306 (in Russian).
• [12.] S. Brunauer, Adsorbtsiya gazov i parov [The Adsorption of Gases and Vapours], (Transl. from English), Inostrannoi literatury Publ., Moskow, 1948, p. 352 (in Russian).
• [13.] Lutsyk R.V. et al., Teplomassoobmen pri obrabotke tekstil'nykh materialov [Heat and Mass Transfer during Textiles Processing], Naukova dymka, Kyiv, 1993, p. 344 (in Russian).

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).