Modal analysis of KRK Bridge by using ansys workbench

Abstract

The modal analysis of KRK bridge is presented in this paper. The solid model and finite element model of KRK bridge are established by ANSYS WORKBENCH 2023 R2. The model is a whole, not made up of multiple parts. Due to the limited finite element number of WORKBENCH, there may be some deviation between the model studied in this paper and the reality. The mass of the model used in this paper is consistent with reality. The modal analysis is carried out under the boundary condition that the bottom of the bridge column is fixed and the two ends are not fixed. The model does not shift in any direction. The aim is to find six modes that have their own natural frequencies and modal modes. The natural frequency of the model is obtained, and the resonance and collapse of the model are avoided during use.