Proceedings of the International scientific and practical conference ―Science at the Frontier of Civilizations: Challenges and Perspectives‖ (December 27-29, 2025) / Publisher website: www.naukainfo.com. – Helsinki, Finland, 2026. – 252 p.

186 PHYSICAL AND MATHEMATICAL SCIENCES UDC 621.313.322 - 752.001.4 Voitovych Mykola Ivanovych Candidate of Physical and Mathematical Sciences, Associate Professor, Associate Professor Velychko Lev Dmytrovych Candidate of Physical and Mathematical Sciences, Associate Professor, Professor, Sorokatyі Mykola Ivanovych Candidate of Physical and Mathematical Sciences, Associate Professor, Associate Professor, Bilash Oksana Viktorivna Candidate of Economic Sciences, Associate Professor, Professor Hetman Petro Sahaidachnyi National Army Academy Lviv, Ukraine INVESTIGATION OF TEMPERATURE FIELDS AND THE RESULTING DEFORMATIONS OF TURBOGENERATOR ROTORS UNDER LOCAL OVERHEATING Abstract. The paper addresses the problem of studying the influence of local overheating on the temperature field and the resulting deformations of a straight rod with a multiply connected cross section, using a turbogenerator rotor as an example. A three-dimensional non-stationary heat conduction problem is reduced to a one-