*INCIDENT WAVE INTERACTION PROPERTY

*INCIDENT WAVE INTERACTION PROPERTY
Define the geometric data and fluid properties describing an incident wave.

This option defines the geometric data and fluid properties used to define incident waves. Each *INCIDENT WAVE INTERACTION option must refer to an *INCIDENT WAVE INTERACTION PROPERTY definition.

Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE

Type: Model data

Level: Model

Abaqus/CAE: Interaction module

References:

Required parameter:

NAME

Set this parameter equal to a label that will be used to refer to the incident wave interaction property in the *INCIDENT WAVE INTERACTION option.

Optional parameter:

TYPE

Set TYPE=PLANE (default) to specify a planar incident wave.

Set TYPE=SPHERE to specify a spherical incident wave.

Set TYPE=DIFFUSE to specify a field of planar waves incident from multiple angles.

Set TYPE=AIR BLAST to specify a spherical blast wave. This option is applicable only in an Abaqus/Explicit analysis.

Set TYPE=SURFACE BLAST to specify a hemispherical blast wave. This option is applicable only in an Abaqus/Explicit analysis.

**Data line to define an incident wave interaction property with TYPE=PLANE, TYPE=SPHERE (acoustic decay), or TYPE=SPHERE used in conjunction with the *UNDEX CHARGE PROPERTY option:**

First (and only) line:

, the speed of sound in the fluid, defining the rate of propagation of the wave.

, the fluid mass density.

Data line to define an incident wave interaction property with TYPE=SPHERE and generalized spatial decay:

First (and only) line:

, the speed of sound in the fluid, defining the rate of propagation of the wave.

, the fluid mass density.

, dimensionless decay parameter (). The default is 0.

Data line to define incident wave loading from diffuse sources (TYPE=DIFFUSE):

First (and only) line:

, the speed of sound in the fluid, defining the propagation speed of the waves.

, the fluid mass density.

N, the seed number for the diffuse source calculation: sources will be used in the simulation.