旋翼与机身耦合的多柔体动力学方程

在分析旋翼系统的挥舞、摆振和变距运动的基础上，应用柔性多体理论建立旋翼系统的动力学方程，并利用超单元技术建立机身动力学方程，然后根据模态综合技术建立旋翼与机身耦合系统动力学方程。同时作线性处理，计算一个简单模型的固有频率，为旋翼与机身耦合系统的振动特性和响应分析提供一种新模型。

Dynamics Equations of Aircraft Rotor Fuselage for Flexible Mutibody Dynamics

The equations of rotor blade systems are derived on the basis of the analyses of lead lag flap and torsion motion of rotor blades and multibody system theory. The equations of fuselage are derived by use of super element technology and then the equations of coupled rotor fuselage are derived by use of mode supper element. The equations of couple rotor fuselage are linearized .An example is given and this paper provides a new model for analysis of coupled rotor fuselage dynamics.