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A general framework has been developed to investigate dynamic stability of composite plates under dynamic and static compressive loads. A variationally consistent, higher-order shear deformation theory has been used to model the displacement field.
The linear strain-displacement relationship corresponding to the small deformation assumption is used first. Both transverse shear and rotary inertia effects are taken into account. The mathematical model is implemented using the finite element approach.
The impact of delamination on the natural frequencies, critical buckling load, and
…mehr

Produktbeschreibung
A general framework has been developed to investigate
dynamic stability of composite plates under dynamic
and static compressive loads. A variationally
consistent, higher-order shear deformation theory has
been used to model the displacement field.

The linear strain-displacement relationship
corresponding to the small deformation assumption is
used first. Both transverse shear and rotary inertia
effects are taken into account. The mathematical
model is implemented using the finite element approach.

The impact of delamination on the natural
frequencies, critical buckling load, and instability
regions is investigated Parametric studies are
conducted to investigate the influence of
delamination placement and size, boundary conditions,
plate thickness, static pre-stress, and stacking
sequence on the instability regions.

Finally, the importance of geometric nonlinearity is
studied by introducing von Kármán nonlinearity.
Natural frequency results are obtained for square
isotropic and cross-ply laminates and compared with
available analytical data. The effect of geometric
nonlinearity on the principal instability region is
also investigated for cross-ply laminates.
Autorenporträt
Adrian G. Radu, Ph.D.: Graduated in 1987 from the Polytechnic
Institute of Timisoara, (Romania), majoring in Welding Equipment
and Technology; obtained his doctorate in Mechanical Engineering
from Arizona State University in 2001. Lecturer at Politehnica
University of Timisoara and FE Analyst at Continental Automotive
Timisoara.