Simulation of the Metal Bar Heating Process Using the Macromolecule Approach

The concept of heat flow and the direct proportional relation between the average kinetic energy of particles and the point temperature were established a long time ago. This made it possible to move from bulky discrete models to fairly simple analysis of continuous medium. Now we see rapid development of the particle approach facilitated by effective computer technologies. However, the development process is hampered by the use of the continuity hypothesis in the calculations. It is evident that it is time to go back and take the kinetic energy of the particle, rather than the temperature, as its hotness degree. It is shown that the solid body heat conduction problem can be solved as a problem of forced vibration of the system of macromolecules arranged in the nodes of the design lattice. The macromolecular approach is essentially a particle method. The advantage of this approach lies in the relatively small required number of elements. The heat conduction problem for an aluminum bar is considered. The macromolecule solution obtained using the MSC.Adams software is compared with the reference finite-element solution using the MSC.Nastran.Thermal software. It is shown that the force characteristic of the macromolecule can be selected so that the results obtained through both methods are sufficiently close.

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