### Experimental verification of the algorithm for calculating the shell of an elasto-screw propulsion unit

**Published:**10.12.2019

**Authors:** Popkov M.V., Sorokin F.D., Briede S.A.

**Published in issue: **#12(96)/2019

**DOI: **10.18698/2308-6033-2019-12-1938

**Category:** Mechanics | **Chapter:** Dynamics, Strength of Machines, Instruments, and Equipment

The algorithm for solving the problem of the interaction of the mesh shell and rollers creating a helical structure on the surface of the elasto-screw propulsion unit was verified by a direct field experiment. Since it was the algorithm, developed to obtain the solution of the problem, tested, not the results of solving it, a number of simplifications were made to the experiment design. Instead of a system of rollers, only one steel ball was pressed into the surface of the mesh shell, and it was pressed from the outside, although the rollers are pressed into the shell from the inside. When verifying the algorithm under consideration, the introduced changes are not significant, since identical loading schemes are considered in the calculation and in the experiment. A detailed description of the experiment and result processing is given. A satisfying agreement between the experimental and calculated data allows us to conclude that the algorithm used to solve the problem of the interaction of rigid bodies with the shell of an elasto-screw propulsion unit is correct.

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