An　analytical　model　to　study　the　nonlinear　dynamic　responses　of　the　rotating　pre-twisted　cantilever　conical　shell　is　developed.　The　varying　rotational　speed　and　forces　are　considered　during　the　establishment　of　the　model.　Using　Hamilton＇s　principle,　the　partial　differential　governing　equation　of　motion　can　be　derived　for　the　rotating　shell.　Based　on　the　governing　equation,　Galerkin＇s　approach　is　applied　to　obtain　a　two-degree-of-freedom　nonlinear　system.　Numerical　simulations　are　performed　to　investigate　the　nonlinear　dynamic　responses　of　the　rotating　shell.　In　summary,　numerical　studies　show　that　the　velocity　and　forces　have　effects　on　the　time　histories,　phase　portraits　and　power　spectrum　densities　(PSD)　of　the　response.　©　2017　IEEE.