Overview
The new FE_Load statement associated with FE_Part enables users to handle complex situations easily with simple function expressions (S functions). In this example, it is assumed that a diameter of 100 mm cable is moving with a constant speed (1 m/s) under water. The cable is then influenced by drag force, which is proportional to the square of the velocity. The drag force (per unit length) is given by:
where the drag coefficient (Cd) is 0.47 for a circular shape. The following single line of input is necessary to model this loading:
FE_LOAD/1, FE_PART=3, FZ= 0.235E-004*SV(1)*SV(1)
In this example the new option FE_Load statement is used to apply a drag force to a cable under water.