Viscoelastic response of composite laminated plate with temperature and moisture effects
- Resource Type
- Conference
- Authors
- S-N Nguyen; J. Lee; M. Cho
- Source
- 한국항공우주학회 학술발표회 초록집. 2016-04 2016(4):275-278
- Subject
- viscoelastic
composite laminates
sandwich plates
efficient higher order plate theory
Laplace transform
- Language
- Korean
Viscoelastic responses of composite plate are investigated based on efficient higher order plate theory under mechanical loading with temperature and moisture effects. Constitutive equation of a linear viscoelastic material expressed as a Boltzmann superposition integral equation is simplified by the convolution theorem of Laplace transform to avoid direct integration as well as to improve both accuracy and computational efficiency. The viscoelastic responses such as deflection, in-plane displacement, normal stress and transverse shear stress are obtained through various numerical inverse Laplace transforms. For the graphite/epoxy GY70/339 material, the numerical results considering various temperature-moisture environments are analyzed and presented.