Computational and Experimental Methods of Strength Analysis of Polyurethane Diaphragms Operating under Cyclic Loadings

Abstract:

In this paper, the algorithm for strength analysis of diaphragms made of elastomers is described, and the strength analysis of the diaphragm made of polyurethane "Vitur" T-1413-85 is carried out. The results obtained showed that the description of the material behavior using the Moony-Rivlin model (5 parameters) gives the greatest accuracy. A comparison of the results of modeling the stress-strain state of the diaphragm and the experimental studies carried out to determine the displacements confirmed the adequacy of the chosen model (average correlation coefficient between numerical simulation and experiment R² = 0.98) for both studied diaphragm thicknesses. The conducted evaluation of the diaphragm resource according to the criteria of fatigue failure showed the correctness of the selected models of durability.

• Periodical: Key Engineering Materials (Volume 910)
• Pages: 779-786
• DOI: https://doi.org/10.4028/p-azoxb8
• Online since: February 2022
• Authors: Leonid Belyaev*, Aleksey V. Zhdanov, Aleksandr Ivanchenko
• Keywords: Computational Method, Cyclic Loadings, Experimental Method, Polyurethane Diaphragm, Strength Analysis

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