Abstract
In order to more effectively and intuitively obtain the modal characteristics of steel structural components, a graphical analysis scheme is proposed based on dynamic testing, finite element simulation, and virtual reality technology. Based on the external excitation method, the vibration sensors and measurement point positions were reasonably arranged according to the number of nodes in the structural components. Through the data processing of the detection unit, the vibration response can be effectively obtained and provide a verification basis for the simulation results. The finite element software Midas Civil was used to model and analyze structural component models, and the results of the first five modes and natural frequencies were obtained. The structural data of modal analysis will be compared and integrated into the virtual environment model through VRML. Due to the ease of modifying the parameters of the virtual model, compared to traditional methods, it is faster and more accurate in detection and scientifically reasonable in control.