Advance in the study on wing aeroelasticity with concentrated nonlinearity

The nonlinear aeroelastic problem of wing with concentrated structural nonlinearity has become one of the hottest and also most challenging topics in the field of aircraft aeroelasticity. In recent decades, great progress has been made for wing nonlinear aeroelasticity, meanwhile new challenges have also emerged. In this paper, researches activities on wing nonlinear aeroelastic characteristics are reviewed. The key problems of the concentrated nonlinear aeroelasticity of wing are described, including the modeling for wing aeroelastic system with concentrated nonlinearity, analysis approaches and nonlinear aeroelastic behaviors. Moreover, the existing achievements of wing nonlinear aeroelasticity studies are summarized and discussed, the prospects of research topics and approaches of wing nonlinear aeroelasticity are proposed.