The Modal Analysis of the Electronic Equipment Cabinet Structure

The modal analysis is an effective method to research on dynamic characteristic of system structure of electronic equipment cabinet and is also the foundation of dynamics response analysis. Using the shell unit, the solid unit and the beam unit of analysis software (ANSYS) of finite element, the finite element model of the cabinet was set up. On the basis of discussion about results of the modal analysis, the degree that distribution of cabinet mass and its stiffness influenced the natural frequency and the vibration model of the system was presented. Furthermore, the weaker region on the cabinet structure was identified and the reasonable corrective measure was provided. In conclusion, the result shows that it can propose the reliable data for dynamic optimum design of the cabinet, as well as the efficient method whether the cabinet will pass the environment tests for the electronic equipment.