kinematic coupling half cylinder
TRANSCRIPT
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Loads:
Internal pressure
Tension
BM
Kinematic coupling constraint on half cylinder
All settings are based
on a coordinate system
where Z-dir is alignedwith the axial direction
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INTERACTION-MODULE:
Assign region to local material orientation
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INTERACTION-MODULE (1):
Kinematic coupling:
Constrained DOFs correspond to
XSYMM and ZSYMM
Global coordinate system is used.
Two couplings are used on each side. The reference node
is still the same. This is to avoid local effects. Nodes lying
in the intersection of the XSYMM and ZSYMM will form a
separate coupling and the nodes will be deselected from
adjacent couplings and boundary conditions.
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INTERACTION-MODULE (2):
Two couplings are used on each side. The reference node
is still the same. This is to avoid local effects. Nodes lying
in the intersection of the XSYMM and ZSYMM will form a
separate coupling and the nodes will be deselected from
adjacent couplings and boundary conditions.
Kinematic coupling:
Constrained DOFs correspond to
ZSYMM
Global coordinate system is used.
Nodes of previous
slide are deselected
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INTERACTION-MODULE (3):
Kinematic coupling:
Constrained DOFs correspond to
XSYMM and ZSYMM
Global coordinate system is used.
Two couplings are used on each side. The reference node
is still the same. This is to avoid local effects. Nodes lying
in the intersection of the XSYMM and ZSYMM will form a
separate coupling and the nodes will be deselected from
adjacent couplings and boundary conditions.
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INTERACTION-MODULE (4):
Two couplings are used on each side. The reference node
is still the same. This is to avoid local effects. Nodes lying
in the intersection of the XSYMM and ZSYMM will form a
separate coupling and the nodes will be deselected from
adjacent couplings and boundary conditions.
Kinematic coupling:
Constrained DOFs correspond to
ZSYMM
Global coordinate system is used.
Nodes of previous
slide are deselected
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LOAD-MODULE (1):
Fixed node
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LOAD-MODULE (2):
Symmetrical BC:
Nodes at the intersection of
XSYMM and ZSYMM are deselected
Nodes at the intersection of
XSYMM and ZSYMM are deselected
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LOAD-MODULE (3):
Node fixed in Y-dir:
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LOAD-MODULE (4):
If U2 is released, numerical singularity may occur If UR2 is released, local effects on stress plot may occur
Load node:
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LOAD-MODULE (5): (If bending moment is applied as rotation)
BM applied as rotation. Note,
that type = velocity.
If rotation is applid as Displacement/Rotation,
the result will be the same, but you will get a
warning:
Finite rotation boundary condition specified in
multistep 3D analysis. Type=velocity should
be used.
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Pure bending:
Internal pressure:
S11 = radial stress
Internal pressure:
S22 = hoop stress
EXAMPLES OF STRESS PLOTS: