DEVELOPMENT OF CONTACT STRESS-ANALYSIS PROGRAMS USING THE HYBRID METHOD OF FEM AND BEM

This paper deals with the development of two- and three-dimensional co ntact stress analysis programs using a method combining the finite ele ment method and the boundary element method. Designed to improve the a ccuracy of analysis using the hybrid method, a new method for computin g the equivalent stiffness matrix is described. Furthermore, the penal ty function is applied to introduce the contact conditions, A three-no de contact element was used for two-dimensional analysis and five-node contact element, for three-dimensional analysis. Considering the appl ication to general slide movements, a new eight-node contact element h as been developed. The programs are applied to the problem of contact between a magnetic disc and a slider. A thin-film of the disc and a sl ider are modeled using finite elements. The substrate of the disc is m odeled using boundary elements. Results confirm the validity and the a ccuracy of this procedure.