Dynamics of shear deformable laminated composites using Raleigh Ritz method
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Authors
Kolar, Ramech
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Advisors
Date of Issue
2003
Date
2003
Publisher
Monterey, California. Naval Postgraduate School
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Abstract
Layered composites have attracted attention
for their high specific stiffness, high specific
strength, and application specific tailoring of
their properties. It is also recognized that layered
composites are prone to delamination failure
in addition to other failure modes. Consideration
of transverse shear on the deformation
behavior of the composites is an important aspect
in the study of delamination mode failure
of such plates. In this paper, we consider the
effects of including the transverse shear deformation
on the vibration characteristics of layered
composites. The formulation is based on
the Raleigh-Ritz method using the beam characteristic
functions. MATLAB based symbollic
math tool box is used in evaluating th eintegrals
resulting from the Raleigh Ritz approach. Various
commonly occuring boundary conditions are
discussed. Results are provided showing the effects
of the shear deformation on the dynamics
of layered laminated composites. The effects
of laminate thickness, fiber orientation, and the
plate aspect ratios on the free vibration characteristics
of the composite laminates are given to
demonstrate the methodology described.
Type
Conference Paper
Description
Conference: 2003 IMAC-XXI: Conference & Exposition on Structural Dynamics
Series/Report No
Department
Aeronautics and Astronautics
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.