*INCIDENT WAVE

Define incident wave loading for a blast or scattering load on a boundary.

The preferred interface for applying incident wave loading is the INCIDENT WAVE INTERACTION option used in conjunction with the INCIDENT WAVE INTERACTION PROPERTY option. The alternative interface uses the INCIDENT WAVE option to apply incident wave loading.

The INCIDENT WAVE PROPERTY option must be used in conjunction with the INCIDENT WAVE option. If the incident wave field includes a reflection off a plane outside the boundaries of the mesh, this effect can be modeled with the INCIDENT WAVE REFLECTION option.

This page discusses:

See Also
*INCIDENT WAVE PROPERTY
*INCIDENT WAVE REFLECTION
In Other Guides
Acoustic, Shock, and Coupled Acoustic-Structural Analysis
Acoustic and Shock Loads

ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE

TypeHistory data

LevelStep

Abaqus/CAEUnsupported; this option has been superseded by incident wave interactions.

Required parameters

PROPERTY

Set this parameter equal to the name of the INCIDENT WAVE PROPERTY option defining the incident wave field.

Required, mutually exclusive parameters

ACCELERATION AMPLITUDE

Set this parameter equal to the name of the amplitude curve defining the fluid particle acceleration time history at the standoff point (Amplitude Curves). This amplitude curve will be used to compute the fluid traction only: a solid surface requiring a pressure load cannot be specified on the data line of an INCIDENT WAVE option if the ACCELERATION AMPLITUDE parameter is used.

This parameter is valid only for planar incident waves using the INCIDENT WAVE PROPERTY, TYPE=PLANE option. Reflected loads, using the INCIDENT WAVE REFLECTION option, are not permitted in this case.

PRESSURE AMPLITUDE

Set this parameter equal to the name of the amplitude curve defining the fluid pressure time history at the standoff point (Amplitude Curves). The corresponding fluid traction, if required, will be computed from the pressure amplitude reference.

Data lines to define an incident wave

First line

  1. Surface name.

  2. Reference magnitude.

Repeat this data line as often as necessary to describe the loading on the surfaces due to the incident wave. In problems involving fluid-solid boundaries, both the fluid surface and the solid surface comprising the boundary must have an incident wave load specified, using the appropriate load type.