Product: Abaqus/Standard
DRAG2D | Two-dimensional drag chain, for use in cases where only horizontal motion is being studied |
DRAG3D | Three-dimensional drag chain |
DRAG2D: (X, Y) coordinates of the pipeline attachment node in the horizontal plane.
DRAG3D: (X, Y, Z) coordinates of both nodes.
Input File Usage: | Use the following option to define the horizontal length at slip and the friction limit: |
*DRAG CHAIN Use the following option to define the seabed for DRAG3D elements: *RIGID SURFACE The rigid surface must be flat and parallel to the global (X, Y) plane. |
S11 | The horizontal component of force supported by the drag chain in the plane parallel to the seabed. |
S12 | The vertical component of force in the drag chain for DRAG3D elements. |
E11 | The horizontal length of the drag chain for DRAG2D elements. The length of chain on the seabed floor (not suspended) for DRAG3D elements. |
E12 | The orientation of the drag chain (angle from the global X-axis). |
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Product: Abaqus/Standard
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This section provides a reference to the drag chain elements available in Abaqus/Standard.
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DRAG2D | Two-dimensional drag chain, for use in cases where only horizontal motion is being studied |
DRAG3D | Three-dimensional drag chain |
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DRAG2D: 1, 2
DRAG3D: At the first node: 1, 2, 3. At the second node: 1, 2, 3, 4, 5, 6.
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None.
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DRAG2D: (X, Y) coordinates of the pipeline attachment node in the horizontal plane.
DRAG3D: (X, Y, Z) coordinates of both nodes.
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Input File Usage: | Use the following option to define the horizontal length at slip and the friction limit: |
*DRAG CHAIN Use the following option to define the seabed for DRAG3D elements: *RIGID SURFACE The rigid surface must be flat and parallel to the global (X, Y) plane. |
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None.
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S11 | The horizontal component of force supported by the drag chain in the plane parallel to the seabed. |
S12 | The vertical component of force in the drag chain for DRAG3D elements. |
E11 | The horizontal length of the drag chain for DRAG2D elements. The length of chain on the seabed floor (not suspended) for DRAG3D elements. |
E12 | The orientation of the drag chain (angle from the global X-axis). |
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DRAG2D: One node at the position where the chain attaches to the pipe.
DRAG3D: Two nodes. The first node is the node where the chain attaches to the pipe; the second node is the “reference node” of the rigid body containing the rigid surface that defines the seabed.
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