This option is used to define pairs of surfaces or pairs of node sets and surfaces that may contact or interact with each other during the analysis.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model data in ABAQUS/Standard; History data in ABAQUS/Explicit
Level: Model in ABAQUS/Standard; Step in ABAQUS/Explicit
Set this parameter equal to the name of the *SURFACE INTERACTION property definition associated with the contact pair being defined.
Set this parameter equal to a node set label or a value to adjust the initial positions of the surfaces specified in this option. These adjustments are made at the start of the analysis and do not create any strain. This parameter is required for TIED contact. This parameter is not allowed with self-contact.
Set this parameter equal to a fraction of the end segment or facet edge length by which the master surface is to be extended to avoid numerical roundoff errors associated with contact modeling. The value given must lie between 0.0 and 0.2. The default is 0.1.
Set this parameter equal to the distance by which a slave node must penetrate the master surface before ABAQUS/Standard abandons the current increment and tries again with a smaller increment. The default value of HCRIT is half of the length of a characteristic element face on the slave surface.
Include this parameter to ignore surface thickness effects in the contact calculations. This parameter affects only small-sliding contact with the surface-to-surface approach (shell/membrane element thicknesses are not accounted for by the other contact formulations in ABAQUS/Standard).
Include this parameter to indicate that the small-sliding contact formulation, rather than the finite-sliding contact formulation, should be used. This parameter is not allowed with self-contact.
Set this parameter equal to the degree of smoothing used for deformable or rigid master surfaces involved in finite-sliding contact. The value given must lie between 0.0 and 0.5. The default is 0.2.
Include this parameter to indicate that the surfaces of this *CONTACT PAIR are to be “tied” together for the duration of the simulation. The ADJUST parameter is required when the TIED parameter is used. This parameter is not allowed with self-contact.
Set TYPE=NODE TO SURFACE (default) to have the contact constraint coefficients generated according to the interpolation functions at the point where the slave node projects onto the master surface.
Set TYPE=SURFACE TO SURFACE to have the contact constraint coefficients generated such that stress accuracy is optimized for the specified surface type pairings. TYPE=SURFACE TO SURFACE is available only if the TIED or the SMALL SLIDING parameter is used.
First line:
The slave surface name.
The master surface name. If the master surface name is omitted or is the same as the slave surface name, ABAQUS/Standard assumes that self-contact is defined.
Optional orientation name to specify the tangential slip directions on the slave surface.
Optional orientation name to specify the tangential slip directions on the master surface.
Repeat this data line as often as necessary to define all of the surfaces or node sets forming the contact pairs. Each data line defines a pair of surfaces or a node set and a surface that may interact with one another.
Set this parameter equal to the name of the contact pair set to which the contact pairs being defined should be added. The CPSET name can be used to associate contact pairs with a *CLEARANCE option or with a *CONTACT CONTROLS option, which can be used to adjust algorithmic control parameters. It can also be used with the *CONTACT OUTPUT option to specify the contact pairs for which output database results are desired.
Set this parameter equal to the name of the *SURFACE INTERACTION property definition associated with the contact pair being defined.
Set this parameter equal to the name of the method used to enforce the contact constraints.
Set MECHANICAL CONSTRAINT=KINEMATIC (default) to choose the kinematic contact method.
Set MECHANICAL CONSTRAINT=PENALTY to choose the penalty contact method.
Set OP=ADD (default) to add new contact pairs to the existing set of contact pairs. Set OP=DELETE to remove the contact pairs given in this use of the option from the active set of contact pairs.
Include this parameter to indicate that the small-sliding contact formulation, rather than the finite-sliding contact formulation, should be used. This parameter can be used only for contact pairs that are defined in the first step of the simulation and use the kinematic constraint method.
Set this parameter equal to the weighting factor for the contact surfaces.
First line:
The name of the first surface.
The name of the second surface. If the second surface name is omitted or is the same as the first surface name, ABAQUS/Explicit assumes that self-contact is defined.
Repeat this data line as often as necessary to define all of the surfaces or node sets forming contact pairs. Each data line defines a pair of surfaces or a node set and a surface that may interact with one another.