Modeling of torsion of a Teflon rod by the method of particles

The structures of modern aircrafts operate under extreme conditions. To calculate such structures, in some cases, the continuity hypothesis should not be admitted for a deformable medium. The method of particles meets these requirements. The article deals with the application of the method of particles to the problem of strong torsion of a rod when the structural element is represented by a relatively small set of macromolecules. The work consists of experimental and computational parts. In the experimental part, the 301010 mm Teflon sample party is twisted in a testing machine until failure. A representative experimental sample torsion diagram is constructed, and the electronic microscope is used to investigate the failure section. In the computational part, a macromolecular model is constructed using the MSC.Adams software package. It is shown that the power characteristic of a Teflon macromolecule can be chosen so that the calculated and experimental torsion curves coincide very closely. The results of the experiments can be used for designing expendable aircrafts.

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