*UNDEX CHARGE PROPERTY
20.2 *UNDEX CHARGE PROPERTY: Define an UNDEX charge for incidentw aves.
This option defines parameters that create the time historiesof load, displacement, and other variables used
to simulate an underwater explosion. Thisoption must be us ed in conjunction with the *INCIDENTWAVE
INTERACTION PROPERTY option.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model or history data
Level: Model, Step
References:
•“Acoustic loads,” Section 27.4.5 of theAB AQUS Analysis User’sManual
•*INCIDENT WAVE INTERACTION PROPERTY
There are no parameters associated with this option.
Data lines to define the UNDEX charge:
First line:
1. Chargematerial constant, K.
2. Chargematerial constant, k.
3. Chargematerial constant, A.
4. Chargematerial constant, B.
5. Adiabaticcharge constant, .
6. Ratioof specific heats for gas, .
Second line:
1. Densityof charge material, .
2. Massof charge material, .
3. Accelerationdue to gravity, g.
4. Atmosphericpressure, .
5. Waveeffect parameter, . Set to 1.0 for wave effects in the fluid and gas; set to 0.0 to neglect
these effects.
6. Flowdrag coefficient, .
Third line:
1. Time duration, .
20.2–1
ABAQUS Version 6.1 Module: ID:
Printed on: