P-delta effect analysis of continuous distribution system based on generalized differential quadrature method

Based on the generalized differential quadrature method, an analysis method of p-delta effect for continuous distribution system is proposed. Firstly, structural with mass and stiffness taken as research object. principle virtual work, axial transverse vibration equations considering are given. Secondly, partial discretized by using dynamic ordinary obtained to analyze system. Finally, example based 5MW wind turbine parameters analyzed, results show that GDQM has high calculation accuracy, which can be dividing only a few nodes; This not consider second-order gravity, but also time-varying caused vertical earthquake, reveal influence earthquake lateral characteristics structures in real time; No matter gravity or effect, this does need iteration computational efficiency.