Influence of polymer aggregate reinforcement on the dynamics of three-layer cylindrical structure of elliptical cross-section

Abstract

The dynamic behavior of a three-layer cylindrical structure of normal elliptical cross-section with a discrete polymer filler under internal non-stationary loading was investigated. A finite element model of the structure was created and calculations of normal deflections and normal stresses of its bearing layers were performed using a software and calculation complex Fimap with NX Nastran. The values of deflections and stresses of the specified layers in the absence and presence of reinforcement of the polymer aggregate structure at the ratio of elasticity of the material of bearing layers and aggregate are given E1,2/Et=500.
 Reinforcement of polymer aggregate with metal stiffening ribs significantly affects the dynamic behavior of the three-layer cylindrical structure. The presence of this factor synchronized the stress-strain layer of the bearing layers of the structure, reduced the values of normal deflections and stresses of the bearing layers of the cylindrical three-layer structure. The effectiveness of reinforcement of polymer aggregate is confirmed by other materials, which indicates the feasibility of the practical use of such a constructive measure.