BREAK OF A CABLE OF A CABLE ROPE

Abstract

Establishing the influence of changes in time properties of rubber on the stress state of the rubber-traction body with a damaged cable. The method of research consists in the analytical solution of the model of the humorous traction body taking into account the rupture of the continuity of the cable and the change in the properties of the rubber. The dependences of the change of the stress state of the traction body of the humotross with the broken structure due to the rheology of the rubber shell are established. An algorithm for determining the stress state of a rubber traction body in case of a broken one is formulated. Structure and manifestations of rubber shell rheology. It is shown that the loads on the cables caused by the discontinuity of one of them lead to a local redistribution of forces almost only between two cables - damaged and adjacent; in case of damage non-extreme cable forces change almost only in three cables - damaged and two related to it. At the same time there are no extreme values ​​of internal efforts of loading of cables depend on the change in the shear modulus of the rubber material over time. Significant rubber shifts were detected occur between the damaged rope and adjacent to the length of the rope; shear angles the rubber between other cables is much smaller relative to the displacements in the local redistribution zone forces and stresses and change slightly due to the aging of the rubber over time. The mechanism of influence of changes of properties of rubber on pressure is established the condition of the traction body, taking into account the rupture of the continuity of the cable and changes in the properties of the rubber. Taking into account the dependence of the stress-strain state of the rope with local violations of the cable base from changes in the mechanical properties of rubber provides the ability to predict the stress state of the rope to improve safety and reliability the use of rubber traction bodies that have a significant service life. Further research should focus on the development of a method of continuous automatic control of rope damage in the rope.