ABAQUS Verification Manual  


1.10.4 Drag chain elements

Product: ABAQUS/Standard  

Elements tested

B21    B33H    DRAG2D    DRAG3D   

Problem description

Model:

Each system tested contains a drag chain element attached to a beam element, which is fully restrained at the other end. For the two-dimensional case a B21 element has a DRAG2D element attached at the second node. A concentrated force is applied in the y-direction at the free end. To test the three-dimensional case, a DRAG3D element is attached to a B33H beam element. In the three-dimensional case the seabed lying in the global x–y plane is modeled using the *RIGID SURFACE option.

DRAG2D:
Friction limit125.0
Horizontal length at slip0.5
DRAG3D:
Total length of chain131.0
Friction coefficient0.3
Weight of chain per unit length4.0
Length of chain lying on the seabed104.0
Height of beam above the seabed10.0

Results and discussion

The calculated reaction forces are in agreement with the applied loads: the applied force is recovered from the forces in the chain elements and reaction forces at the restrained node of the beam.

Input files