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3. Meshes can be generated separately for selected macroelements. Each macroelement has a
complete and unique mesh consisting of finite elements, nodal points and degrees of
freedom.
4. On contact surfaces two meshes exist, each belonging one macroelement. These meshes
need not to coincide. They are connected by method of “Master-Slave”, in which “Slave”
degree of freedom (DOF) is kinematically dependent on “Master” DOF. Alternatively
there may be contact elements between these meshes, which allow relative displacement
of interface meshes to model slip.
5. Rules for “Master” nodes on contacts: Meshes on overlapping area of contact surface, are
compared. The surface with smaller number of nodes on the same area size is the master
surface, with master nodes. Master nodes are free. Slave nodes are kinematically
dependent on master nodes. In the example on Fig. 3-88 the master nodes in surface 1. If
the automatic selection does not work as expected, it can be overridden manually in the
Topology tab in Topology | Contact | Individual | Edit (3.7.2.3).
A list of sub-items in FE mesh menu is shown in Fig. 3-89.
Fig. 3-88 Master nodes on contact.
Fig. 3-89 Data tree for FE meshing.
ATENA Engineering - 3D - User´s Manual
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