Two-Dimensional Mechanical Behavior Analysis of Multilayered Solids Subjected to Surface Contact Loading Based on a Semi-Analytical Method

• Main Authors: Jingjing Zhang, Tingjian Wang, Chuanwei Zhang, Longcheng Yin, Yue Wu, Yang Zhao, Xinxin Ma, Le Gu, Liqin Wang
• Format: Article
• Language: English
• Published: MDPI AG 2020-04-01
• Series: Coatings
• Subjects: multilayer coatings; two-dimensional elastic field solution; analytical frequency response functions; numerical conversion method; mechanical behavior analysis
• Online Access: https://www.mdpi.com/2079-6412/10/5/429

In this paper, a two-dimensional semi-analytical method is developed for the mechanical behavior analysis of multilayered solids subjected to surface contact loading, which is indispensable for realizing an optimized tribological performance from the mechanical behavior point of view. Firstly, the explicit analytical frequency response functions of the multilayered solid are derived in a recursive form by analytically solving a system of linear equations established according to the boundary conditions and the interface continuous conditions. Then, the two-dimensional elastic field solution in the subsurface of multilayered solids in the space domain is converted from its corresponding frequency response functions by employing a numerical conversion method based on the inverse fast Fourier transformation. The present method is validated by comparing with the solution given by other methods. Lastly, the stress analysis of multilayered coatings with various structure layouts and various layer number of the multilayers were performed with the present method.