To analyze the effects of clearance joint number and dynamic interaction on responses of the flap actuation system, a dynamic analysis model is proposed based on a modified contact force model. The modified contact force model can take contact properties with small clearance, heavy load, large contact area and variable contact stiffness coefficient into consideration for the flap actuation system. Numerical results show that the actuation system presents violent fluctuation due to the dynamic interaction between multiple clearance joints, and the clearance joint closest to the input part suffers more serious contact effects. Furthermore, the combination motion modes between the multiple clearance joints are helpful to judge and analyze the motion state and dynamic behaviors of actuation systems. These simulation findings can provide a theoretical foundation for the optimization design, control strategy and engineering experiments of the actuation systems with multiple clearances.

为了分析间隙接头数量和动力相互作用对襟翼驱动系统响应的影响，提出了一种基于修正接触力模型的动力分析模型。修改后的接触力模型可以考虑小间隙，重载，大接触面积和可变接触刚度系数的接触特性，以用于襟翼驱动系统。数值结果表明，由于多个间隙关节之间的动态相互作用，致动系统呈现剧烈的波动，并且最接近输入部件的间隙关节受到更严重的接触影响。此外，多个间隙关节之间的组合运动模式有助于判断和分析致动系统的运动状态和动态行为。