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.
Characterization of Delamination Effect on Free Vibration of Composite Laminates Plate Using High Order Shear Deformation Theory
Delamination
high order shear deformation
plate
free vibration
nonlinear finite element method
Publication Date
Tue Mar 30 2021
Journal Name
College Of Islamic Sciences
Need and transgression in Surat (Abs) Semantic grammatical study: Need and transgression in Surat (Abs)
Praise be to God who blessed us with the grace of Islam
and set our tongues in the language of the Qur’an. The Arabic language is beautiful through its grammar and rules
and its meanings which are the spirit of grammar
and we allocate the element of Arabic speech
which is the verb and the phenomenon of necessity and transgression
one of the important phenomena in modern studies and received attention from ancient and modern scholars
and we called our research: (Obligatory and transgression in Surat Abbas
semantic grammatical study) . The research was divided into two sections: The first topic included: the necessary verbs in Surat (Abs) an applied study.
The research aims to highlight the significance and composition and the diversity of meanings and the Quranic context in the necessary and transgressive verbs in Surat (Abs).
This research consists of : a preamble , and two studies . The researcher addressed in the preliminary the importance of the phenomenon of necessity and infringement, the signs of the necessary action , the structure and controls of the act , the methods of infringement , its sections and signs.
As for the first topic : The researcher addressed the necessary verbs in Surat Abs , an applied study in terms of grammati
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