Belous Dmitrii, Badalyan Anna, Khomenko Alexei, Goncharov Alexander
Department of Applied Mathematics and Complex Systems Modeling, Sumy State University, 40007 Sumy, Ukraine.
Institute of Materials Science, Slovak University of Technology in Bratislava, Jána Bottu 25, 917 24 Trnava, Slovakia.
Materials (Basel). 2024 May 20;17(10):2466. doi: 10.3390/ma17102466.
This paper presents the results of the study of stress relaxation fields, deformation, and temperature of the system of nanostructured multilayer coatings. In the work, a nonlinear relationship between strain and stress was used to take into account nonlinear effects in the mechanism of nanostructure formation. The paper assumes that a friction surface is provided by the self-organization of shear components: both stress and strain on the one hand, and temperature on the other. The studied objects are described in the adiabatic approximation, taking into account the fact of the evolution of stresses and strains. With the help of phase portraits of the system, the dependence of the deformation processes on the stresses arising in the system without coating and with coating is shown. It is shown that the rate of change of deformation depends on the characteristics of the mechanical impact on the coating and on the amount of stress and deformation. A conclusion is drawn regarding the transition process in the presence of two regions (Hooke and plastic deformation) in the corresponding phase portrait of the strain-stress field of the system. The results of the work can be used to determine the effective parameters of a coating in the analysis of experimental time dependences of stresses.
本文介绍了纳米结构多层涂层系统的应力松弛场、变形和温度的研究结果。在这项工作中，利用应变与应力之间的非线性关系来考虑纳米结构形成机制中的非线性效应。本文假定，剪切分量的自组织提供了一个摩擦表面：一方面是应力和应变，另一方面是温度。考虑到应力和应变的演化事实，采用绝热近似描述所研究的对象。借助系统的相图，展示了变形过程对无涂层和有涂层系统中产生的应力的依赖性。结果表明，变形变化率取决于对涂层的机械冲击特性以及应力和变形量。针对系统应变 - 应力场相应相图中存在两个区域（胡克和塑性变形）时的过渡过程得出了结论。这项工作的结果可用于在分析应力的实验时间相关性时确定涂层的有效参数。
