A Model of Interaction of Rigid Fibers in an Orthotropic Composite Rope

The purpose of research is to construct an algorithm for calculating a stress-strain state of a multilayer orthotropic composite rope. Research methodology involves constructing and solving the interaction model of parallel reinforcing rigid fiber elements regularly placed in layers connected through an elastic material. A method for calculating a stress-strain state of a multilayer orthotropic composite rope is developed. The scientific novelty of research is in the establishment of a dependency for distribution of internal loading forces in reinforcing rigid fibers on stay rope parameters. The distribution of internal loading forces in reinforcing fibers depends on the amount and relative location of fibers in a stay rope. Along the length, the stress-strain state of a rope depends on a square root of the ratio of shear modulus of elastic matrix and tensile rigidity of fibers. The practical value of the research is in that the presented method allows determining the rope stress-strain state during the designing stage of a permanent structure. This is based on structural parameters and mechanical properties of components of a composite rope and conditions of its interaction with the structure, thereby increasing reliability and operation efficiency of the structure, in particular, the cable-stayed bridge.