Analysis of Dynamic Stability for Composite Laminated Beam with Delamination

Abstract:

Abstract. By introducing the Heaviside step function into assumed displacement components and using the Rayleigh-Ritz method for minimizing the total potential energy, a set of dynamic governing equations for the delaminated beam is derived. Then, the dynamic governing equations are written as the Mathieu-type equations to describe the parametric vibrating behavior of the beam, and these equations are solved by employing the Bolotin’s method. Numerical results in dynamic stability of laminated beam with delamination are presented, and the effects of static loading, delamination length and material property on the principal dynamic instability region of the laminated beam are discussed. Present results are compared with available data.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 3074-3077
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.3074
• Online since: October 2012
• Authors: Jin Hua Yang*, De Liang Chen, Ming Zhe Ning
• Keywords: Delamination, Dynamic Stability, Laminated Beam, Rayleigh-Ritz Method

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