Characterization of Delamination Effect on Free Vibration of Composite Laminates Plate Using High Order ShearDeformation Theory

Al-Khawarizmi Engineering Journal

Nabil Hassan Hadi¹  Kayser Aziz Ameen¹ 

[1] Department of Mechanical Engineering/ College of Engineering/ University of Baghdad;

关键词: Delamination;    high order shear deformation;    plate;    free vibration;    nonlinear finite element method;   

DOI  :  

来源: DOAJ

【 摘 要 】

A dynamic analysis method has been developed to investigate and characterize embedded delamination on the dynamic response of composite laminated structures. A nonlinear finite element model for geometrically large amplitude free vibration intact plate and delamination plate analysis is presented using higher order shear deformation theory where the nonlinearity was introduced  in the Green-Lagrange sense. The governing equation of the vibrated plate were derived using the Variational approach. The effect of different orthotropicity ratio, boundary condition and delamination size on the non-dimenational fundamental frequency and frequency ratios of plate for different stacking sequences are studied. Finally the discrepancy of the results was 17.4906% when the severe nonlinearity is considered.

【 授权许可】

Unknown