The further mechanical analysis on connection bolts of wind turbine

A large amount of bolt connections are frequently used in WTG. Combining characteristic of WTG bolt connection, with the connection of pitch bearing inner circle and blade as the research object, using finite element method, build multiple connection model, adopt multi-point constraints and nonlinear contact for finite element analysis, research on bolt rod element types, connections of each component and the establishment of contact, acquire the analysis result of different fine degrees from bolt stress to thread contact stress, puts forward the feasible finite element analysis scheme of wind generator bolt connection.