Research on Dynamic Stability of Steel Radial Gates

Due to the steel radial gates' characteristics of structural and acting forces, the investigation on parametric resonance of radial gates' arms has always been the hot topic in the research field of radial gate's dynamic stability. In this paper, the simplified space frame is taken as the analytical model, and according to the elastomer perturbation equation and beam element model of thin-walled structure, the dynamic instability region of radial gates can be obtained by the finite element method, then the computational method is applied to calculate the main regions of dynamic instability for a working radial gate. Furthermore, combing with the physical and numerical models, a new method recognizing the parameter resonance of steel radial gates is proposed. The investigations, in this paper, are not only important improvement for the radial gates' parametric vibration computational method, but also a solid foundation for further study on the dynamic stability of radial gate structure.