Corporate Structure for Innovative Enterprises

This paper considers the problem of determining the strength of carbon fiber reinforced plastic with straight and curved fibers under high-speed loading. High-speed tests of unidirectional CFRP specimens with rectilinear and wavy structure have been carried out. The influence of the structure and high-speed loading on the ultimate strength and ultimate deformation of the material is investigated. For the first time, a detailed study of the effect of fiber curvature on the properties of CFRP under high-speed deformation has been carried out. As a result of dynamic tests, it was shown that the ultimate strength in unidirectional laying is higher than in wavy laying. The effect of increasing the ultimate deformations of specimens with bent fibers was established, which was noted earlier for the case of tensile tests.

Section: Investigation Of the Strength Of Composite Materials Under High-speed Loadingmentioning

confidence: 99%

Effect of High Velocity Deformation on Strength of ArmoredComposite Materials

Thang¹

2021

“…In accordance with the description of the physical processes of adsorption, it is necessary to write a system of equations describing the dynamics of sorption in the layer of the studied system [33][34][35][36][37][38]. Experimental studies have shown that the processes occurring in the sorbent layer are nonstationary and one-dimensional (we neglect the change in parameters along the layer height).…”

Section: Systems Of Equations Simulating the Adsorption Processmentioning

confidence: 99%

Mathematical modelingof heat and mass transfer processes in the adsorbers of the air purification system

Старовойтов¹

2021

The present work is devoted to the study of the processes of heat and mass transfer in the adsorbers of the preliminary drying unit of the atmosphere purification system. A mathematical model has been developed that adequately reflects the physical processes at all stages of the adsorption cycle.Algorithms for solving problems and programs for calculating heat and mass transfer processes in an adsorption regenerated installation are obtained, results of parametric calculations of heat and mass transfer processes at each stage of the adsorption cycle and for the entire cycle as a whole are obtained.

“…In linear problems of statics, in fact, as experiments show, the effect of thin coatings can be neglected. However, in more specific problems (for example, under conditions of finite deformations, nonlinear elasticity), neglecting the effect of thin coatings can lead to significant calculation errors [31][32][33][34][35][36][37]. Significant effects associated with the influence of thin polymer coatings on the stress-strain state of thin-walled metal structures can manifest themselves in stability tests and can be associated with the action of residual stresses.…”

Section: Evaluation Of the Strength Properties Of Coated Metal Elementsmentioning

confidence: 99%

Creation of Polymer Coatings for Improving of Protective Properties of Surfaces

Orekhov¹

2021

In this paper, the preparation of polymer coatings on the surface of metal structural elements is considered to improve their physical, mechanical and strength properties. It is shown that the behavior of substrate samples under mechanical loads can be estimated using mathematical modeling methods. The properties of coatings and the mechanical properties of coated and uncoated metal plates have been evaluated. Methods for constructing mathematical models of metal plates of various structures are proposed.