Simulation Studying on Viscoelasticity and Orthotropic of Composite Materials

Abstract:

The viscoelasticity and orthotropic of composite materials has been investigated. Based on the essence of dynamic wave equation, a numerical modeling of guided waves propagating in anisotropic viscoelastic plates is developed by employing the spectral finite element method (SFEM). The phase velocity, energy velocity and attenuation curves can be obtained and analyzed by simulating carbon-epoxy film and carbon-epoxy film on the different substrates. The results illustrate that the mode coupling phenomenon will occur due to consider viscoelastic of composite materials which can use for choice of frequency. In the viscoelastic film/substrate system, the more modes and the lower attenuation amplitude appear which explains the better for monitoring long distance. Knowledge of these properties is important for evaluating material damage and designing material structure .

• Periodical: Advanced Materials Research (Volume 893)
• Pages: 275-282
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.893.275
• Online since: February 2014
• Authors: Hong Li*, Qing Feng Wang
• Keywords: Attenuation Curves, Energy Velocity, Phase Velocity, Spectral Finite Element Method (SFEM), Viscoelastic

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