Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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To the problem of determining the coefficient of thermal expansion of materials

D.V. Pyansin, N.A. Pan'kin, A.N. Chaldyshkin, N.I. Chistyakov

National Research N.P. Ogarev Mordovia State University

DOI: 10.26456/pcascnn/2020.12.284

Original article

Abstract: An experimental study and computer modeling in the ANSYS software package of the thermal effect on a metal material was carried out. A decrease in the values of the coefficient of the thermal expansion is noted with an increase in the heating rate of the sample. It is shown that this behavior is due to the presence of the temperature gradient between its central and surface parts. Good agreement of the results of computer simulation with the corresponding experimental data is found. The values of the coefficient of thermal expansion are close to true ones determined at low heating / cooling rates or with long exposure of the sample at the final and initial temperatures. The simulation results in ANSYS can be used to interpret and predict thermal properties of metallic materials.

Keywords: coefficient of thermal expansion, modeling, heating rate, temperature gradient, experiment

  • Denis V. Pyansin – Ph. D., Docent, Department of Radio Engineering, National Research N.P. Ogarev Mordovia State University
  • Nikolay A. Pan'kin – Ph. D., Docent, Department of Solid State Physics, National Research N.P. Ogarev Mordovia State University
  • Alexander N. Chaldyshkin – Lecturer, Department of Radio Engineering, National Research N.P. Ogarev Mordovia State University
  • Nikolay I. Chistyakov – Ph. D., Docent, Department of Radio Engineering, National Research N.P. Ogarev Mordovia State University

Reference:

Pyansin, D.V. To the problem of determining the coefficient of thermal expansion of materials / D.V. Pyansin, N.A. Pan'kin, A.N. Chaldyshkin, N.I. Chistyakov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2020. — I. 12. — P. 284-292. DOI: 10.26456/pcascnn/2020.12.284. (In Russian).

Full article (in Russian): download PDF file

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