中文摘要：

The Euler-Bernoulli beam model coupled with the sectional properties obtained by the variational asymptotic beam sectional analysis(VABS)method is used to construct the blade structure model.Combined the aerodynamic loads calculated by unsteady blade element momentum model with a dynamic inflow and the dynamic stall correction,the dynamics equations of blade are built.The Newmark implicit algorithm is used to solve the dynamics equations.Results of the sectional properties and blade structure model are compared with the multi-cell beam method and the ANSYS using shell elements.It is proved that the method is effective with high precision.Moreover,the effects on the aeroelastic response caused by bend-twist coupling are analyzed.Torsional direction is deflected toward the upwind direction as a result of coupling effects.The aerodynamic loads and the displacement are reduced.

英文摘要：

The Euler-Bernoulli beam model coupled with the sectional properties obtained by the variational asymp totic beam sectional analysis （VABS） method is used to construct the blade structure model. Combined the aerody- namic loads calculated by unsteady blade element momentum model with a dynamic inflow and the dynamic stall correction, the dynamics equations of blade are built. The Newmark implicit algorithm is used to solve the dynam- ics equations. Results of the sectional properties and blade structure model are compared with the multi-cell beam method and the ANSYS using shell elements. It is proved that the method is effective with high precision. Moreover, the effects on the aeroelastic response caused by bend-twist coupling are analyzed. Torsional direction is deflected toward the upwind direction as a result of coupling effects. The aerodynamic loads and the displacement are reduced.