Influence of Reinforcement Breakage on Tractive Capacity of Composite Elastomer-Cable Tractive Element
Year: 2025
Type: article
Abstract: Composite elastomer-cable tractive elements can be used in mine hoisting, conveyor transportation, or as stay ropes in permanent structures. The working conditions of a rope depend on the application of a machine where it is used. Composite rope design provides particular advantages in industrial utilization of ropes, however raises the issues of predicting their stress state and reliability during operation in various loading conditions. Article purpose is in determining a dependency of stress-strain state of a composite elastomer-cable tractive element on a breakage (breakages) location scheme of reinforcing elements. Article methodology is in analytical solution of a model using methods of mechanics of layered composite materials with layers of increased rigidity connected by elastic layers. Mathematical models of a stress-strain state of composite elastomer-cable tractive element on breakage (breakages) location scheme of reinforcing elements are formulated and dependencies are established. The scientific novelty of the article is in establishing that extreme values of stress-strain states indicators of butt joints for a step-like scheme do not depend on the amount of cables in a rope, provided that there are at least six cables. In case of breakages in continuity of several cables, in several cross-sections, edge disturbances are localized both along the length and in adjacent cables. Tangential stresses in a rubber layer of a butt joint for a step-like scheme take place, practically, only in the rubber located between the discontinuities of the adjacent cables. Qualitative character of dependencies of tangential stresses coincides with a character of distribution of tensile forces in cables. At the same time, the largest internal forces and stresses in a butt-joint connection for a step-like scheme occur in the corresponding elements closest to belt edge. Practical significance of the article is in that a force concentration coefficient in butt joints for a step-like scheme is established. The established feature of a dependency of tensile forces of side cables and stresses in an elastic material that connects it to the adjacent one in the butt joint for a step-like scheme indicates a possibility to ensure a condition of equality of safety margins of an elastic interlayer and the most loaded cables, by selecting the lengths of the side cables in the connection. The actual loads acting on the lifting mechanism and the parameters of the lifting system can be taken into account when setting the boundary conditions for solving the models suggested in the article.
Source: Key engineering materials
DOI: 10.4028/p-ioex5r
Authors: Dmytro Kolosov, Ivan Belmas, Hanna Tantsura, Olena Bilous, Serhii Onyshchenko
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7108335367