scholarly journals Effect of hygrothermal environment on the nonlinear free vibration responses of laminated composite plates: A nonlinear Unite element micromechanical approach

2016 ◽  
Vol 149 ◽  
pp. 012151 ◽  
Author(s):  
Trupti R Mahapatra ◽  
Subrata K Panda ◽  
Sushmita Dash
Keyword(s):  
Free Vibration ◽  
Laminated Composite ◽  
Composite Plates ◽  
Laminated Composite Plates ◽  
Nonlinear Free Vibration ◽  
Micromechanical Approach ◽  
Vibration Responses ◽  
Hygrothermal Environment

scholarly journals Nonlinear Free Vibration for Viscoelastic Moderately Thick Laminated Composite Plates with Damage Evolution

2010 ◽  
Vol 2010 ◽  
pp. 1-15 ◽  
Author(s):  
Y. F. Zheng ◽  
L. Q. Deng
Keyword(s):  
Free Vibration ◽  
Transverse Shear ◽  
Superposition Principle ◽  
Laminated Composite ◽  
Composite Plates ◽  
Laminated Plates ◽  
Damage Effect ◽  
Laminated Composite Plates ◽  
Nonlinear Free Vibration ◽  
The Galerkin Method

The nonlinear free vibration for viscoelastic cross-ply moderately thick laminated composite plates under considering transverse shear deformation and damage effect is investigated. Based on the Timoshenko-Mindlin theory, strain-equivalence hypothesis, and Boltzmann superposition principle, the nonlinear free vibration governing equations for viscoelastic moderately thick laminated plates with damage are established and solved by the Galerkin method, Simpson integration, Newton-Cotes, Newmark, and iterative methods. In the numerical results, the effects of transverse shear, material viscoelasticity, span-thickness ratio, aspect ratio, and damage effect on the nonlinear free vibrating frequency of the viscoelastic cross-ply moderately thick laminated plates are discussed.

DYNAMIC RESPONSE OF COMPOSITE PLATES IN HYGROTHERMAL ENVIRONMENT

2012 ◽  
Vol 04 (03) ◽  
pp. 1250009
Author(s):  
M. K. RATH ◽  
S. K. SAHU
Keyword(s):  
Free Vibration ◽  
Dynamic Response ◽  
Vibration Analysis ◽  
Epoxy Composite ◽  
Laminated Composite ◽  
Free Vibration Analysis ◽  
Composite Plates ◽  
Laminated Composite Plates ◽  
Fiber Glass ◽  
Hygrothermal Environment

The present study deals with both experimental and numerical investigation on vibration behavior of laminated composite plates subjected to varying temperature and moisture. Extensive experiments are carried out for free vibration analysis of woven fiber Glass/Epoxy composite plates under hygrothermal conditions. The specimens were hygrothermally conditioned in a humidity cabinet where the conditions were maintained at high temperatures and moisture concentrations.

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