User`s guide

Release 7.5 MADYMO Coupling Manual
(a) Contact Interaction
If an external group is to be used in a contact calculation, add the following:
i. Define a specific GROUP_FE elements for the PARTNER elements involved in
the contact interaction. Groups of elements, nodes and/or parts can be used.
<GROUP_FE
ID="2"
NAME="Ext_Group_gfe"
FE_MODEL ="/Ext_System/Ext_FE_Model"
PART_LIST ="ALL"
/>
The attribute PART_LIST may also be combined or replaced by other lists, for
example a NODE_LIST and/or ELEMENT_LIST (see the MADYMO Reference
Manual for details). The value ALL may also be replaced by more specific part,
node or element numbers provided that the PARTNER input deck specifies that
these values are communicated to MADYMO. Please note that numbering of
nodes and elements of the PARTNER FE coupled parts in MADYMO may not
be the same as in the PARTNER FE input deck.
ii. Define a contact between this group and the MADYMO model groups using
CONTACT.FE_FE or CONTACT.MB_FE. Here follow two examples:
<CONTACT.FE_FE
ID="21"
MASTER_SURFACE="/ES2_lhs/Pelvis_gfe"
SLAVE_SURFACE="RADIOSS_door_gfe"
>
<CONTACT_METHOD.NODE_TO_SURFACE_CHAR>
<CONTACT_FORCE.CHAR
CONTACT_TYPE="MASTER"
FRIC_FUNC="Friction03_fun"
/>
</CONTACT_METHOD.NODE_TO_SURFACE_CHAR>
</CONTACT.FE_FE>
and
<CONTACT.FE_FE
ID="1"
MASTER_SURFACE="/Ext_Coupling_gfe"
SLAVE_SURFACE="/DAB_gfe"
>
<CONTACT_METHOD.SURFACE_TO_SURFACE>
<CONTACT_FORCE.ADAPTIVE
DAMP_COEF="0.05"
TIME_STEP="2.05E-6"
/>
<GAP_TYPE.FUNC
GAP_FUNC="/Gap_fun"
/>
<CONTACT_EDGE/>
<INITIAL_TYPE.CHECK/>
</CONTACT_METHOD.SURFACE_TO_SURFACE>
</CONTACT.FE_FE>
Please note the following:
• All contact types can be used (elastic and penalty based) except kinematic con-
tact.
• Damping in the contact(s) between MADYMO and PARTNER can be used.
• For contact between a PARTNER FE model and MADYMO MB models use
CONTACT.MB_FE.
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