The Influence of Geometrical Parameters on the Rigidity of Couplings with Elastic Metal Elements of Circular Cross Section
Authors: Zyablikov V.M., Semenov-Ezhov I.E., Shirshov A.A. | Published: 04.09.2018 |
Published in issue: #8(701)/2018 | |
Category: Mechanical Engineering and Machine Science | Chapter: Machine Science | |
Keywords: coupling with elastic elements, rigidity of the coupling, rod of circular cross section, contact pressure, stress concentration factor, factor analysis |
The main characteristic of couplings is rigidity. In couplings with elastic metal elements in the form of rods, rigidity chiefly depends on the flexural rigidity and the free length of the rods, as well as on the contact compliance and the gap between the diameters of the rod and the hole in the half-coupling, into which the rod is inserted. The influence of these parameters on the contact pressure and the stress concentration, estimated by means of the theoretical stress concentration factor is examined. The numerical study of the contact interaction of the rod — half-coupling pair is conducted using the factor analysis. It is established that in addition to the flexural rigidity and the free length of the rods, the gap between the diameters of the rod and the hole in the half-coupling into which the rod is inserted has the greatest effect on rigidity. The calculations are carried out using the ANSYS software (version R17, Academic). The results obtained are presented in the form of graphs of the dependences of the relative deflection, the relative contact pressure and the theoretical coefficient of stress concentration on the relative gap.
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