*BEAM FLUID INERTIA

*BEAM FLUID INERTIA
Define additional beam inertia due to immersion in a fluid.

This option is used in conjunction with the *BEAM SECTION or *BEAM GENERAL SECTION option to include added inertia effects in Timoshenko beam elements due to immersion in an inviscid fluid.

Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE

Type: Model data

Level: Part, Part instance, Assembly

Abaqus/CAE: Property module

References:

“Beam section behavior,” Section 28.3.5 of the Abaqus Analysis User's Manual
“Acoustic, shock, and coupled acoustic-structural analysis,” Section 6.10.1 of the Abaqus Analysis User's Manual
“Loading due to an incident dilatational wave field,” Section 6.3.1 of the Abaqus Theory Manual

Optional, mutually exclusive parameters:

FULL

Use this parameter to specify a fully submerged beam (default).

HALF

Use this parameter to specify a half-submerged beam.

Data line to define beam fluid inertia:

First (and only) line:

Mass density of fluid.

Local 1-coordinate of the center of the cylindrical cross-section with respect to the beam cross-section, x.

Local 2-coordinate of the center of the cylindrical cross-section with respect to the beam cross-section, y.

Radius of the cylindrical cross-section, r.

Added mass coefficient, (default = 1.0), for lateral motions of the beam.

Added mass coefficient, (default = 0.0), for motions along the axis of the beam. This coefficient affects only the term added to the free end(s) of the beam.