!CONTACT

Definition of contact conditions

Parameters

GRPID       = boundary condition group ID
INTERACTION = SSLID(small-sliding contact, default) / FSLID(finite-sliding contact) / TIED(tied constraint)
NTOL        = contact-normal convergence threshold (default: 1.e-5)
TTOL        = contact-tangential convergence threshold (default: 1.e-3)
NPENALTY    = contact-normal penalty (default: stiffness matrix × 1.e3)
TPENALTY    = contact-tangential penalty (default: 1.e3)
CONTACTPARAM = contact detection parameter set name (specified by !CONTACT_PARAM, NAME)

** 2nd line and later **

When INTERACTION = SSLID, FSLID

(2nd line) PAIR_NAME, fcoef, factor

Variable	Attribute	Description
PAIR_NAME	C	Contact pair name (defined by !CONTACT_PAIR)
fcoef	R	Friction coefficient (default: 0.0)
factor	R	Friction penalty stiffness

When INTERACTION = TIED

(2nd line) PAIR_NAME

Variable	Attribute	Description
PAIR_NAME	C	Contact pair name (defined by !CONTACT_PAIR)

Example

!CONTACT_ALGO, TYPE=SLAGRANGE
!CONTACT, GRPID=1, INTERACTION=FSLID
  CP1, 0.1, 1.0e+5

Notes

• When CONTACTPARAM is specified, the referenced !CONTACT_PARAM must be defined before the !CONTACT card. If this parameter is omitted, the default contact detection parameter set is used.