Open AccessMODELING AND ANALYSIS OF THE DEFORMED MEDIA (METAL CONSTRUCTION ELEMENTS) NON STATIONARY THERMAL FIELDS DURING THEIR LASER SHORT WAVES PULSES TREATMENT
Author(s) -
Yuriy Chоvnyuk,
Petro Cherednichenko,
Volodymyr Kravchyuk,
Olga Ostapushchenko,
Ye. O. Ivanov
Publication year - 2021
Publication title -
sučasnì problemi arhìtekturi ta mìstobuduvannâ
Language(s) - English
Resource type - Journals
ISSN - 2077-3455
DOI - 10.32347/2077-3455.2021.60.277-296
Subject(s) - thermoelastic damping , laser , fourier transform , materials science , porous medium , mechanics , thermal , optics , stress–strain curve , stress (linguistics) , thermal conductivity , porosity , physics , composite material , deformation (meteorology) , thermodynamics , linguistics , philosophy , quantum mechanics
Substantiated mathematical model for non-stationary thermoelastic deformed media during their laser processing by short waves pulses fields analysis is proposed . Precise analytical solutions of the thermal conductivity equations which simulate the short laser pulses interaction and allow to further determine their components thermally stress-strain state of the processed materials, in particular, thin porous films, capillary-porous bodies are obtained. Two analysis methods were used: 1) traditional separating variables method (Fourier method), 2) non-Fourier analysis of the non-stationary thermal fields that described by the telegraphic equation known in the literature. The results obtained in this work can be used further to establish the thermo stress-strain state of materials interacting with short waves laser radiation pulses parameters. Such approach is used at the modern building process for the rising of the reliability, durability and strength of the metal construction elements.