High-Fidelity Fin–Actuator System Modeling and Aeroelastic Analysis Considering Friction Effect

Both the dynamic characteristics and structural nonlinearities of an actuator will affect flutter boundary a fin–actuator system. The models used in past research are not universal, accuracy is difficult to guarantee, consideration nonlinearity adequate. Based on modularization, high-fidelity modeling method for proposed this paper. This model considers both freeplay friction, which easy expand. It can be directly analyze perform aeroelastic analysis systems. Friction improve stability, but mechanism its influence system has been reported. In paper, LuGre model, better reflect friction characteristics, was integrated into actuator. initial condition, freeplay, analyzed. comparison results with previous shows that oversimplified accurate enough friction’s influence. By changing loads, material, geometry contact surfaces, effectively suppressed, power loss caused by minimized.