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The
4-nodes and 8- nodes nonlinear
resultant shell elements are
available for the solution of
nonlinear dynamic problems of
composite plates and shells
with failure criteria. The transverse
shear stiffness is defined by
an improved equilibrium approach
instead of using the shear correction
factor.
The
progressive static and dynamic
failure are incorporated in
XFINAS using Four failure criteria
(Maximum stress, Tsai-Wu, Tsai-Hill
and Modified Puck Criterion
Theory). The nonlinear static
and dynamic failure analysis
is done by computing for the
inter-laminar stresses in each
stress point in an element.
Having obtained the stresses
in each layer, checking for
failure can be done based on
a chosen failure criterion.
Example
In order to show the performance
of finite rotation and deformation
of XSHELL83, the nonlinear analysis
of the fiber-reinforced composite
hyperbolic shell with (0°/90°/0°)
lay-ups under pinched loading
are carried out.
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