User`s guide

Release 7.5 MADYMO Coupling Manual
7.3 Radioss Input Deck Setup
This section describes the required modifications to the Radioss input deck to perform Ex-
tended Coupling or Basic Coupling simulations. See the Radioss User Manual for details on
the cards not mentioned here specifically. Modifications to the MADYMO input deck are de-
scribed in Sec.
3.
7.3.1 Basic Coupling
• Note that Radioss only uses the value of EXTERNAL_REF. However, the attribute EX-
TERNAL_DATA is mandatory in MADYMO and must therefore be given a value, be it
arbitrary.
• For Radioss, planes will be output in Radioss ANIMATION files, but no contact compu-
tation is possible with Radioss FE in Radioss.
• The interfaces TYPE 14 and 15 allow to compute contact between MADYMO hyper-
ellipsoids and Radioss FE. The option /MADYMO/LINK allows to connect a Radioss
node to a MADYMO body. (See the Radioss CRASH input manual for a description of
the options /MADYMO/LINK, /SURF/MDELLIPS, /INTER/TYPE14 and /INTER/-
TYPE15).
Input Example Basic Coupling
The following is part of a MADYMO input deck for Basic Coupling:
<COUPLING>
<COUPLING_SURFACE
EXTERNAL_REF="10"
SURFACE="/2/1"
EXTERNAL_DATA="0.0"/>
</COUPLING>
This will send data from surface /2/1 to Radioss. In Radioss one may refer to this data using
reference 10. Note the arbitrary value 0.0 for EXTERNAL_DATA, which is not used in Radioss.
The following is part of a Radioss STARTER input deck for Basic Coupling:
/SURF/MDELLIPS/1001/The first madymo coupl’d surface
10
Verification
The user is advised to check the log file and the reprint file to verify if all entities are communi-
cated correctly. The log file shows the Radioss output of all entities received from MADYMO,
the reprint file shows the entities MADYMO sends to Radioss.
The Radioss STARTER log file:
32