Convention.al modeling methods for dynamics of flexible multibody systemshave been widely believed that dynamic equations by using methods are unavoidably linearized prematurely in deformation coordinates, which results in loss of dynamic stiffening terms in the equations. This paper presents a multi-flexible-bodydynamics formulation incorporating a recently developed theory based on nonlinearexpression of deformation fields over a flexible body undergoing large motion accompanied by small vibrations. The d...