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*
MEMBRANE SECTION
NODAL THICKNESS
Include this parameter to indicate thatthe m embrane thickness should not be read from the data lines
but should be interpolated from the thicknessspecifiedat the nodes withthe
*
NODAL THICKNESS
option.
ORIENTATION
Set this parameter equal to the name given for the
*
ORIENTATION option to be used to define a
local coordinate system for material calculations in the elements in this set.
POISSON
This parameter is relevant only in a large-deformation analysis. Set it equal to a nonzero value
to cause the thickness to change as a function of membrane strains. The value of the POISSON
parameter must be between −1.0 and 0.5. A value of 0.5 will enforce incompressible behavior of
the element. POISSON=0.0 means that the thickness will not change.
Set this parameter equal toMATERIALin anABA QUS/Explicit analysis tocause thethickness
to change based on the element material definition.
The default is POISSON=0.5 in ABAQU S/Standard and POISSON=MATERIAL in
ABAQUS/Explicit.
Data line for a constant thickness membrane:
First (and only) line:
1. Section thickness.
To define a continuously varying thickness membrane:
No data lines are used with this option when the NODAL THICKNESS param eter is specified; any
value input on the data line will be ignored. Instead, the
*
NODAL THICKNESS option is used to
define the section thickness.
13.9–2
ABAQUS Version 6.1 Module:
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