Abstract:
This article presents a numerical simulation of thermomechanical processes in heat-resistant alloys.
The authors develop the law of temperature distribution along the length of the physical body, which is
considered as a rod of alloy EI-617. The authors also investigated the dependence of the magnitude of the
elongation of the rod from a given temperature. To do this, the rod is conditionally divided into several
elements, and then the study is carried out in one area. To determine the temperature dependence, the
temperature distribution field is approximated by a full polynomial of the second degree, and approximation
spline functions are introduced. Using a temperature gradient for one element, the functional expression
characterizing the total thermal energy is written, first for the (n-1) element, then for the last n-th element.
The total thermal energy is expressed by the formula
n
i
J Ji
1
. By minimizing the total thermal energy, we
obtain a system of algebraic equations for determining the nodal values of temperatures. Applying the
obtained values, the elongation of the element due to thermal expansion is calculated. The relationship
between the temperature T, elongation lT , «tensile» force R , and «tensile stress» . is shown in the
work. It is shown that with increasing temperature, the above values proportionally increase.
