Abstract:The finite segment method, a discrete coordinate method for a flexible beam, was extended to a regular flexible plate,which is regarded as a multirigid bodies system with many compliance (stiffness、damping) joints. The basic idea and theoretical background of the discrete coordinate method were expounded, and the dynamic equation was built by NewtonEuler method. In virtue of finite element software and dynamic simulation program, this paper proved that the discrete coordinate method can be used for dynamic analysis of multibody systems with regular flexible plate undergoing nonlinear deformations.