ANSYS Finite Element Analysis Of Receding Contact Problems For Functionally Graded Materials

Functionally graded materials weaken the boundaries between the components,so that changes the macro properties and functions of the material in the same direction gradient, and meets the characteristics of the performance of the material under different conditions. Because the functional gradient material has the characteristics of continuous gradient change, therefore, can be used in aerospace,electronics, chemical and biomedical fields. As FGMs can effectively inhibit the contact damage and contact failure, the contact mechanics problems have received extensive attention of the researchers. In this paper, when the gradient layer and substrate connected, boundary conditions for the contact problem of non adhesive form(namely receding problem research). In this paper, by analyzing the distribution of stress on the receding contact occurs the interface with ANSYS software. The main contents in this paper include:(1) Based on laminate model,using ANSYS software simulates the functional gradient layer and uniform half space two-dimensional contact problem. Assume the gradient layer to change according to the exponential function.Under concentrated force and uniform force, analysis of non-uniform parameters of FGMs on the contact radius and influencing the stress distribution,different gradient parameters on the contact radius.(2) Based on the analysis of the front the finite element model, analysis of receding contact problem of functionally graded material layer in spherical indenter. Considering the material non-uniform parameters of gradient layer effect on stress distribution and contact radius.(3) Using ANSYS simulates Ti C-Ni metal ceramic functionally graded axisymmetric receding contact problems. Firstly, getting the distribution function of the gradient layer, then the analysis of the external load, the non-uniform thickness parameters of functionally graded materials, the elastic modulus of uniform half space stress distribution of the contact radius and the contact. The results show that the non-uniform parameters of functional gradient materials has an important effect on receding contact stress distribution and contact radius. The results of this study for functionally graded axisymmetric receding contact problem has certain reference significance.