Computer Simulation of Safety Processes of Composite Structures Rheological Properties

Abstract

Mechanical means directly related to the information support path (locators, ob-servation stations, tracking, detection, localization, etc.) require special attention within the technical channels for obtaining information. Their precise and stable performance is of paramount importance. During operation, the instability of the structure occurs when driving on the road, that is, the vibration of the structure. The vibration of the structure during movement is a significant obstacle to im-proving the accuracy of the devices. The influence of the main structural and technological factors on the thermal and stress-strain state, as well as on the performance of large-sized tires, was studied using a comprehensive approach. Modeling of tires with various structural and technological parameters was carried out. Technical solutions in the field of large tires construction, manufacturing technology, and operating modes, have been developed based on complex computational and experimental research, which allowed to provide a decrease in temperature at the design stage, which leads to the in-creased resource. Simulation and calculation are possible only with the use of computer technology and appropriate software. The need to take into account changes in the properties of tire construction materials in the conditions of heating was established by calculation and confirmed by the experiment. o calculate the stress-strain state under conditions of high temperatures, a mathematical model of the moment anisotropic three-layer shell of the tire was used, taking into account the nonlinear deformation of composite materials. The tire is modeled with a three-layer anisotropic shell according to the design features based on the broken line hypothesis for the carcass. The shell is loaded with internal pressure. The movements of the outer layers are independent. The displacements of the middle layer are calculated from the displacements of the outer layers and the curvature changes during deformation. Modeling of the tire with a multilayer shell, material properties of the integral equation with the creep core, taking into account the temperature effect on composite materials of the tire design and implementation in time using numerical methods is possible only with modern computer technology. Calculation at variable parameters and loads, simulation computer modeling, allows to estimate the properties of the structure at the design stage. A simple and convenient environment model for describing the rheological properties of composites under conditions of various loads and elevated temperatures has been developed. The paper presents a model for describing the rheological properties of composite anisotropic materials; the method of determining viscosity and temperature parameters for inelastic materials is shown; the possibility of predicting the behavior of composites in different modes of loads and temperatures is demonstrated.