Nonlinear Vibration in Axisymmetric Laminated Circular Plate with Delamination
Chen Deliang(1,2),Fu Yiming(1)
(1 Engineering mechanics department, Hunan university,changsha, 410082 ,China)
(2 College of bridge and structure ,changsha university of science and technolog y,changsha, 410076,China)

Abstract: Based on the Von Karmen theory, the method of the dissociated three regions is adopted to establish the nonlinearity governing equations of moti on for axisymmetric ortho-symmetric ply delaminated plate, where the effect of transverse shearing is taken into account. Galerkin method is used to obtain a set of the dimensioness dynamic differential equations, which are resolved with harmonic balance method. The effects of different radius and depth of delamination on the amplitude-frequency curves of the circular plate are discussed.
Keywords: nonlinearity vibration, axisymmertric circular plate, delamination, amplitude-frequency curves.