Acoustic Interface Element Library

This section provides a reference to the acoustic interface elements available in Abaqus/Standard.

This page discusses:

See Also
Acoustic Interface Elements
In Other Guides
*INTERFACE

Products Abaqus/Standard Abaqus/CAE

Element Types

Element for General Use

ASI1

1-node

Active Degrees of Freedom

1, 2, 3, 8

Additional Solution Variables

None.

Elements for Use in Planar Models

ASI2D2

2-node linear

ASI2D3

3-node quadratic

Active Degrees of Freedom

1, 2, 8

Additional Solution Variables

None.

Elements for Use in 3D Models

ASI3D3

3-node linear

ASI3D4

4-node linear

ASI3D6

6-node quadratic

ASI3D8

8-node quadratic

Active Degrees of Freedom

1, 2, 3, 8

Additional Solution Variables

None.

Elements for Use in Axisymmetric Models

ASIAX2

2-node linear

ASIAX3

3-node quadratic

Active Degrees of Freedom

1, 2, 8

Additional Solution Variables

None.

Nodal Coordinates Required

General use element: None.

Planar: X, Y

3D: X, Y, Z

Axisymmetric: r, z

Element Property Definition

For general-use elements, you must define the element's surface area and the direction cosines of the normal to the acoustic fluid-structural interface, pointing into the fluid.

For elements for use in planar models, you must specify the thickness (out-of-plane) of the element. The default is unit thickness if no thickness is specified.

For elements for use in three-dimensional and axisymmetric models, no additional data are required.

Input File Usage

INTERFACE

Abaqus/CAE Usage

Property module: Create Section: select Other as the section Category and Acoustic interface as the section Type

General-use acoustic interface sections are not supported in Abaqus/CAE.

Element-Based Loading

Distributed impedances cannot be applied.

Element Output

None.

Node Ordering on Elements

Planar



 

3D



 

Axisymmetric