Modeling of Contact Stresses for Condition Monitoring Using Finite-Element Method and Semi-analytical Approach

摘要

In this article, three different models simulating the wave propagation in an infinite isotropic structure are compared. The first semi-analytical model is based on the Fourier transform and Galerkin method for the calculation of the occurring contact stresses, when the function of displacements in the contact area is specified. The wave fields excited by this model are compared to the results calculated for a finite element (FE) model of an isotropic layer during the steady-state analysis. The structure is loaded by the given displacements in the contact zone. According to the third approach, the effect of the actuator is approximated by a pin-force model. This problem is simulated using the FE formulation as well. In both FE models, the infinite boundary conditions are simulated using the perfectly matched layers (PML). The efficiency of the presented approaches is assessed by comparing the obtained results.