№83-13
Influence of reinforcement cross-section shape in composite tractive elements on compressive and shear resistance of elastomer shell
D. Kolosov1, https://orcid.org/0000-0003-0585-5908
I. Belmas2, https://orcid.org/0000-0003-2112-0303
S. Onyshchenko1, https://orcid.org/0000-0002-5709-7021
O. Bilous2, https://orcid.org/0000-0001-6398-8843
H. Tantsura2 https://orcid.org/0000-0002-8672-1153
1 Dnipro University of Technology, Dnipro, Ukraine
2 Dniprovsk State Technical University, Kamianske, Ukraine
Coll.res.pap.nat.min.univ. 2025, 83:145–160
Full text (PDF)
https://doi.org/10.33271/crpnmu/83.145
ABSTRACT
Purpose. Establish the dependency of elastomeric shell rigidity of the layer located between the reinforcement (cables) of a composite tractive element (rope) on the shape of their cross-section.
Research methodology. Numerical solution of a mathematical model of stress-strain state of an elastomeric shell of a composite tractive element using the finite volume method with the application of CAD tools.
Findings. Parameters of stress-strain state of an elastomeric shell located between the reinforcement (cables) of a composite tractive element are determined depending on the shape of their cross-section. Rigidity parameters of rubber interlayer under compression during cable convergence and mutual displacement of cables along the rope axis are obtained. It is established thatshear rigidity of elastomer interlayer influences the distribution of forces and displacements of cables in a rope. The change of distribution occurs along the rope length. At the same time, adopting a conventional (simplified – circular) shape of the cable cross-section leads to obtaining overestimated values. Under compression, the rigidity overestimation at small cable spacing reaches up to 2.5, and under shear – 1.3.
Scientific novelty. The dependencies of influence of rigidity of the elastomeric shell layer of the composite tractive element on its stress-strain state is established, taking into account the cross-section shape of the reinforcement. Identical displacements of cables and distributions of their tensile forces in two types of ropes with the same mechanical and geometric parameters, except for shear rigidity, differ proportionally to the ratio of a square root of shear rigidity of the rubber interlayer.
Practical significance. The established influence of a reinforcing cable cross-sectional shape on shear and compressive rigidity of the elastomeric shell of the rope should be taken into account in the design of composite tractive-carrying elements as one of the specific operating conditions in hoisting and transporting installations and permanent structures.
Keywords: compositeconstruction, tractive element, rope, belt, stay rope, reinforcement, elastomeric shell, cross-section, compression, shear, rigidity, mathematical model, numerical modeling, stress-strain state.
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date of first submission of the article to the publication – 10/02/2025
date of acceptance of the article for publication after review – 11/05/2025
date of publication – 12/29/2025