Time Domain Tests

COUNT:

This test the ability to count the number of cycles of the bending moments and shears and place them in "bins".

DRPBAR:

This is a time domain analysis of releasing a pendulum and watching it fall.

ENTRY_EXIT:

This is a comparison to the OMAE2005-67311 paper on slamming.

FIX_END:

FIX_END and PIN_END are two approaches to the same problem of a single beam subjected to a sea. For FIX_END the beam is "fixed" at the seafloor. The answers should "be the same" as those of the test PIN_END but they are not. The difference is a starting transient which decays more quickly for the PIN_END case. This is because it uses constraints while the FIX_END case uses flexible elements. Also of note is that this test is quite sensitive to the values of the stiffness. Increasing stiffness an order of magnitude or so will yield quite unacceptable results.

PIN_END:

See the above.

HEAVE:

This is a heave decay test in the time domain.

PIC_PRC:

This is an example of how to do animations which incorporate the results of time domain load cases during a time domain simulation, and of how to convert frequency response into a set of time events.

PIN:

This is an example of a simulation and stress analysis of a pinned structure containing only Morison elements in the time domain.

PISTON:

This is an example of the -PISTON option available with some flexible connectors.

RECT:

This is an example of a simulation and stress analysis of a moored structure containing only Morison elements in the time domain.

ROLL:

This is an example of roll decay in the time domain.

SLAM:

This is an example of the slam force on a tube in still water.

SLAM_FIX:

This is an example of the slam force on a fixed tube in waves.

SWAY:

This is an example of sway decay in the time domain.

SWING:

This is a test of a bar connected on two ends to a single point through very stiff tension elements.

T_TANAKA:

This is a test of Tanaka damping in the time domain.

WINDUS:

This test checks the time domain wind gust spectrum.