Abstract
Finite Element Method (FEM) is an effective numerical analysis method. Analyzing contact gear and building by FEM can direct and amend design. The distribution of contact stress and the maximum value of contact stress are analyzed by the analysis method for gear contact stress. By the way of ANSYS，the contact element method proposed in the thesis is proved to be valid．The thesis also gives a new reference to other contact problems. Analysis of Steel-framed floor is based on a engineering example and the finite element analysis software in the application of high-rise building is verified.
Keywords: gear finite element analysis ANSYS contact stress nonlinear steel structure
